Date: May 2015 Pathfinder Air-cooled Screw Chillerslit.daikinapplied.com/bizlit/DocumentStorage/AirCooledChiller/... · Air-cooled Screw Chillers Model AWS ... Pre-Start Checklist

Installation, Operation, and Maintenance Manual

Pathfinder® Air-cooled Screw Chillers

Model AWS 170 to 550 Tons (600 to 1935 kW) 60Hz 164 to 604 Tons (575 to 2125 kW) 50Hz HFC-134a Refrigerant

IOM 1202-2Group: Chiller

Part Number: IOM1202-2

Date: May 2015

IOM 1202-2 • PATHFINDER® MODEL AWS CHILLERS 2 www.DaikinApplied.com

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Installation and Startup . . . . . . . . . . . . . . . . . . . . . . . . 4Lifting and Mounting Information . . . . . . . . . . . . . . . 16Isolator Information . . . . . . . . . . . . . . . . . . . . . . . . . . 50Electrical Information . . . . . . . . . . . . . . . . . . . . . . . . . 59Pressure Drop Data . . . . . . . . . . . . . . . . . . . . . . . . . . 82Controller Operation . . . . . . . . . . . . . . . . . . . . . . . . . 94Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . 108Unit Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Circuit Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . 126Alarms and Events . . . . . . . . . . . . . . . . . . . . . . . . . . 137Using the Controller . . . . . . . . . . . . . . . . . . . . . . . . . 145Optional Remote User Interface . . . . . . . . . . . . . . . 148Optional Compressor VFD . . . . . . . . . . . . . . . . . . . . 150Startup and Shutdown . . . . . . . . . . . . . . . . . . . . . . . 154System Maintenance . . . . . . . . . . . . . . . . . . . . . . . . 156Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

©2015 Daikin Applied. Illustrations and data cover the Daikin Applied product at the time of publication and we reserve the right to make changes in design and construction at any time without notice.

Manufactured in an ISO 9001 & ISO 14001 certified facility

Table of ConTenTs

Hazard Identification DANGER

Dangers indicate a hazardous situation which will result in serious injury or death if not avoided.

WARNINGWarnings indicate potentially hazardous situations which can result in property damage, servere personal injury or death if not avoided.

CAUTIONCautions indicate potentially hazardous situations which can result in personal injury or equipment damage if not avoided.

©2014 Daikin Applied Form SF01017 P/N 331977001 10OCT2014

Pre-Start Checklist – Screw Chillers Must be completed, signed and provided to Daikin Applied at least 2 weeks prior to requested start date.

Job Name Installation Location

Customer Order Number Model Number(s)

G.O. Number(s) Chilled Water Yes No N/A Initials Piping Complete Water strainer installed on evaporator entering chilled water piping per IM Water System filled, flushed and vented Pumps installed and operational (rotation checked, strainers cleaned) Controls operational (3-way valves, face/bypass dampers, bypass valves, etc.) Water system operated and tested; flow meets unit design requirements Flow switch installed and wired Vent installed on evaporator Glycol at design % Electrical Yes No N/A Initials Building controls operational *Power leads connected to power block or optional disconnect Power leads have been checked for proper phasing and voltage All interlock wiring complete and compliant with Daikin specifications Power applied at least 24 hours before startup Oil heaters energized at least 24 hours before startup Chiller components (EXV Sensors Transducers) installed and wired properly. *Wiring complies with National Electrical Code and local codes (See Notes) Remote EXV wired with shielded cable Miscellaneous Yes No N/A Initials Unit control switches all off Remote Evaporator Piping factory reviewed and approved All refrigerant components/piping leak tested, evacuated and charged Thermometers, wells, gauges, control, etc., installed Minimum system load of 80% capacity available for testing/adjusting controls Document Attached: Technical Breakdown from Selection Software Document Attached: Final Order Acknowledgement Document Attached: Remote evaporator piping approval Notes: The most common problems delaying start-up and affecting unit reliability are: 1. Field installed compressor motor power supply leads too small. Questions: Contact the local Daikin sales representative*. State size, number and

type of conductors and conduits installed: a. From Power supply to chiller

* Refer to NEC Article 430-22 (a) 2. Remote Evaporator piping incomplete or incorrect. Provide approved piping diagrams. 3. Items on this list incorrectly acknowledged may result in delayed start and extra expenses incurred for return trips.

Contractor Representative Daikin Applied Sales Representative Signed: Signed: Name: Name: Company: Company: Date: Date: Phone/Email: Phone/Email:

Cut

Her

e

InTroduCTIon

InTroduCTIon

General Information Daikin Pathfinder® air-cooled chillers are complete, self-contained chillers that include the latest in engineered components arranged to provide a compact and efficient unit. Each unit is completely assembled, factory wired, evacuated, charged, tested and comes complete and ready for installation. Each compressor has an independent refrigeration circuit. Liquid line components included are a manual liquid line shutoff valve, charging port, filter-drier, sight-glass/moisture indicator, and electronic expansion valve. A discharge check valve and discharge shutoff valve are included and a compressor suction shutoff valve is optional. Other features include compressor heaters, evaporator heaters for freeze protection, automatic, one-time pumpdown of each refrigerant circuit upon circuit shutdown, and an advanced fully integrated controller.

Pathfinder® units are available in one of three unit efficiency levels - standard, high, and premium.

Information on the operation of the unit MicroTech®III controller can be found starting on page 94.

Remote Evaporator ModelsFor enhanced application flexibility, Pathfinder® chillers are also available with a remote evaporator option. Information on remote evaporator units can be found in the current installation manual for remote evaporator configurations, available at www.DaikinApplied.com.

Inspections When the equipment is received, carefully check all items against the bill of lading to verify for a complete shipment. Check all units for damage upon arrival. All shipping damage must be reported to the carrier and a claim must be filed with the carrier. Check the unit name plate before unloading the unit to be sure that it agrees with the power supply available. Physical damage to a unit after shipment is not the responsibility of Daikin. NOTE: Unit shipping and operating weights are shown in the

Lifting and Mounting section beginning on page 16

Nomenclature

Table 1: Operating Limits

Maximum standby ambient temperature 130°F (54.4°C)

Maximum operating standard ambient temperature 105°F (40.6°C)

with optional high ambient package Note: some standard efficiency units may not operate fully loaded up to the 125°F maximum ambient temp limit. Some units offer a reduced RFS option limiting max ambient to 118°F. Contact the Daikin Applied sales office for information.

125°F (52°C)

Minimum operating ambient temperature (standard control) 35°F (2°C)

Minimum operating ambient temperature (with optional low-ambient control) 0°F (-18°C)

Leaving chilled water temperature [NOTE: 60°F (15.6°C) max with VFD and reduced RFS option]40°F to 70°F (4.4°C to 21.1°C)

Leaving chilled fluid temperatures (with anti-freeze) - Unloading is not permitted with fluid leaving temperatures below 30°F (-1°C). [NOTE: 60°F (15.6°C) max with VFD and reduced RFS option]

20°F to 70°F (-6.7°C to 21.1°C)

Operating chilled water delta-T range6°F to 18°F (3.3°C to 10°C)

Maximum evaporator operating inlet fluid temperature 88°F (31.1°C)

Maximum evaporator non-operating inlet fluid temperature 100°F (38°C)

AWS XXX C D S E

Model AWS = Air-Cooled World Product Screw Compressor

Nominal unit size (cataloged size—nominal unit capacity)

Design vintage

Unit configuration E = Standard packaged M = Remote Evaporator

Unit efficiency S = Standard H = High P = Premium

Unit compressors D = Dual compressors T = Triple compressors

www.DaikinApplied.com 3 IOM 1202-2 • PATHFINDER® MODEL AWS CHILLERS


InsTallaTIon and sTarTup


Installation and maintenance are to be performed only by qualified personnel who are familiar with local codes and regulations, and experienced with this type of equipment.

WARNINGSharp edges and coil surfaces are a potential injury hazard. Avoid contact with them.

Startup by a Daikin Applied service representative is included on all Pathfinder® units sold for installation within the U.S. and Canada and must be performed by them to initiate the standard Limited Product Warranty. Startup by any party other than a Daikin Applied service representative will void the Limited Product Warranty. Two-week prior notification of startup is required. The contractor should obtain a copy of the Startup Scheduled Request Form from the sales representative or from the nearest Daikin Applied service office.

WARNINGEscaping refrigerant can displace air and cause suffocation. Immediately evacuate and ventilate the equipment area. If the unit is damaged, follow Environmental Protection Agency (EPA) requirements. Do not expose sparks, arcing equipment, open flame or other ignition source to the refrigerant.

Handling DANGER

Improper lifting or moving of a unit can result in property damage, severe personal injury or death. Follow rigging and moving instructions carefully.

Avoid rough handling shock due to impact or dropping the unit. Do not push or pull the unit. Never allow any part of the unit to fall during unloading or moving as this can result in serious damage.

To lift the unit, lifting tabs with 3” (76 mm) diameter holes are provided on the base of the unit. All lifting holes must be used when lifting the unit. Spreader bars and cables should be arranged to prevent damage to the condenser coils or unit cabinet (see Figure 1).

LocationLocate the unit outdoors and provide proper airflow to the condenser. (See page 5 for required clearances.)Using less clearance than shown in Figure 2 can cause discharge air recirculation to the condenser and could have a significant detrimental effect on unit performance.

Due to the shape of the condenser coils on Pathfinder® chillers, it is recommended that the unit be oriented so that prevailing winds blow parallel to the unit length, thus minimizing the wind effect on condensing pressure and performance. If low ambient temperature operation is expected, optional louvers should be installed if the unit has no protection against prevailing winds.

For pad-mounted units, it is recommended that the unit be raised a few inches with suitable supports such as neoprene waffle vibration pads, located at least under the mounting locations. This will allow water to drain from under the unit and facilitate cleaning under it.

Figure 1: Required Lifting Method

NOTE: 1.Unit with 8 lifting points illustrated above; the number of condenser sections, fans, and lifting points can vary from this diagram.see lifting/mounting drawings beginning on page 16 to identfy the number of lifting points for a specific unit.2.All rigging points must be used. See weights at lifting points beginning on page 16 for each specific size unit.3.Crosswise and lengthwise spreader bars must be used to avoid damage to unit.

Mounting Hole AccessThe inside of the base rail is open to allow access for securing mounting bolts, etc.



Service AccessCompressors, filter-driers, and manual liquid line shutoff valves are accessible on each side or end of the unit. The evaporator heater is located on the barrel.

The control panels are located on the end of the chiller. The left-hand control box contains the unit and circuit microprocessors as well as transformers, fuses and terminal. The right-hand panel contains a circuit breaker. A minimum of four feet of clearance is required in front of the panels. The side clearance required for airflow provides sufficient service clearance.

On all Pathfinder® units, the condenser fans and motors can be removed from the top of the unit. The complete fan/motor assembly can be removed for service. The fan blade must be removed for access to wiring terminals at the top of the motor.

DANGERDisconnect, lockout and tag all power to the unit before servicing condenser fan motors or compressors. Failure to do so can cause bodily injury or death.

Do not block access to the sides or ends of the unit with piping or conduit. These areas must be open for service access. Do not block access to the control panels with field-mounted disconnect switches.

Clearance Requirements The clearance requirements shown are a general guideline and cannot account for all scenarios. Such factors as prevailing winds, additional equipment within the space, design outdoor air temperature, and numerous other factors may require more clearance than what is shown.

Figure 2: Guidelines

NOTE: 1 Minimum side clearance between two units is 12 feet (3.7 m). See Case 2 for spacing closer than 12 ft.2 Minimum clearance on each side is 8 feet (2.4 m) when installed in a pit no deeper than the unit height. Unit must not be installed in a pit or enclosure that is deeper or taller than the height of the unit unless extra clearance is provided per note 4. See Case 5 for performance adjustment factors when installations vary from minimum values.3 Minimum side clearance to a side wall or building taller than the unit height is 6 feet (1.8 meters), provided no solid wall above 6 feet (1.8 meters) is closer than 12 feet (3.7 meters) to the opposite side of the unit. See Case 1 for performance adjustment factors when installations vary from minimum values.4 There must be no obstruction of the fan discharge.

Restricted Air FlowThe clearances required for design operation of Pathfinder® air-cooled chillers are described in the previous section. Occasionally, these clearances cannot be maintained due to site restrictions such as units being too close together or a fence or wall restricting airflow, or both. Pathfinder® chillers have several features that may help mitigate the penalties attributable to restricted airflow.

The condenser section is “W” shaped, as shown below. This allows inlet air for these coils to come in from both sides and the bottom. All the coils in one “V” section serve one compressor except for 3 circuit units which use both sides of the “W” shaped condenser coil..

The MicroTech® III control is proactive in response to “off-design conditions”. In the case of single or compounded influences restricting airflow to the unit, the microprocessor will act to keep the unit running (at reduced capacity), rather than allowing a shut-off on high discharge pressure.

Figure 3: Air Flow



Case 1: Building or Wall on One Side of UnitThe existence of a screening wall or the wall of a building in close proximity to an air-cooled chiller is common in both rooftop and ground level applications. Hot air recirculation on the coils adjoining the wall will increase compressor discharge pressure, decreasing capacity and increasing power consumption.

When close to a wall, it is desirable to place chillers on the north or east side of them. It is also desirable to have prevailing winds blowing parallel to the unit’s long axis. The worst case is to have wind blowing hot discharge air into the wall.

Figure 4: Case 1 - Unit Adjacent to Wall

Figure 5: Case 1 - Adjustment Factors

Case 2: Two Units Side By SideTwo or more units sited side by side are common. If spaced closer than 12 feet (3.7 meters) it is necessary to adjust the performance of each unit; circuits adjoining each other are affected. If one of the two units also has a wall adjoining it, see Case 1. Add the two adjustment factors together and apply to the unit located between the wall and the other unit.

Mounting units end to end will not necessitate adjusting performance. Do not use pit or solid wall surrounds where the ambient air temperature exceeds 100°F (38°C).

Figure 6: Case 2 - Two Units Side by Side




Case 3: Three or More Units Side By SideWhen three or more units are side by side, the outside chillers (1 and 3 in this case) are influenced by the middle unit only on their inside circuits. Their adjustment factors will be the same as Case 2. All inside units (only number 2 in this case) are influenced on both sides and must be adjusted by the factors shown below.

Figure 8: Case 3 - Three or More Units


Case 4: Open Screening WallsDecorative screening walls are often used to help conceal a unit either on grade or on a rooftop. Design these walls such that the combination of their open area and distance from the unit do not require performance adjustment. It is assumed that the wall height is equal to or less than the unit height when mounted on its base support. This is usually satisfactory for concealment. If the wall height is greater than the unit height, see Case 5, Pit Installation.

The distance from the sides of the unit to the side walls must be sufficient for service, such as opening control panel doors.

If each side wall is a different distance from the unit, the distances can be averaged providing either wall is not less than 8 feet (2.4 meters) from the unit. For example, do not average 4 feet and 20 feet to equal 12 feet (1 meter and 5 meters to equal 3 meters).

Figure 10: Case 4 - Open Screening Walls

Figure 11: Case 4 - Adjustment Factor



Case 5: Pit/Solid Wall InstallationPit installations can cause operating problems resulting from recirculation and restriction can both occur. A solid wall surrounding a unit is substantially the same as a pit and the data presented here should be used.

Steel grating is sometimes used to cover a pit to prevent accidental falls or trips into the pit. The grating material and installation design must be strong enough to prevent such accidents, yet provide abundant open area to avoid serious recirculation problems. Have any pit installation reviewed by a Daikin Applied sales representative prior to installation to make sure it has sufficient air-flow characteristics, and approved by the installation design engineer to avoid risk of accident.

Figure 12: Case 5 - Pit Installation


D=6 ft(1 .8m)

D=8 ft(2 .4m)

D=10 ft (3 .1m)

0 .00

1 .00

2 .00

3 .00

4 .00

5 .00

6 .00

8(2 .4)

10(3 .1)

12(3 .7)

14(4 .3)

Cap

acity

Red

uctio

n (%

)

H - Height of Wall or Building in ft . (m)

Full Load Capacity Adjustment Factor



Chilled Water Piping Figure 14: Typical Piping, Shell and Tube Evaporator

CAUTIONTo prevent damage to the evaporator and potential chiller failure, a supply strainer is required in the inlet water piping which connects to this evaporator. This strainer must be installed prior to operation of the chilled liquid pumps.

Field installed water piping to the chiller must include:

• A cleanable strainer installed at the water inlet to the evaporator to remove debris and impurities before they reach the evaporator. Install cleanable strainer within 5 feet (1500 mm) of pipe length from the evaporator inlet connection and downstream of any welded connections (no welded connections between strainer and evaporator).

• AWS-C models require a strainer with perforations no larger than 0.125” (3.2 mm) diameter. See the Inlet Strainer Guidelines on page 10 for more information.

• A water flow switch must be installed in the horizontal piping of the supply (evaporator outlet) water line to avoid evaporator freeze-up under low or no flow conditions. The flow switch may be ordered as a factory-installed option, a field-installed kit, or may be supplied and installed in the field. See page 11 for more information.

• Purge air from the water system before unit start-up to provide adequate flow through the evaporator.

• Adequate piping support, independent from the unit, to eliminate weight and strain on the fittings and connections.

It is recommended that the field installed water piping to the chiller include:

• Thermometers at the inlet and outlet connections of the evaporator.

• Water pressure gauge connection taps and gauges at

the inlet and outlet connections of the evaporator for measuring water pressure drop.

• Shutoff valves are necessary to isolate the unit from the piping during unit servicing.

• Minimum bends and changes in elevation to minimize pressure drop.

• An expansion tank or regulating valve to maintain adequate water pressure

• Vibration eliminators in both the supply and return water lines to reduce transmissions to the building.

• Flush the system water piping thoroughly before making connections to the unit evaporator.

• Piping insulation, including a vapor barrier, helps prevent condensation and reduces heat loss.

• Regular water analysis and chemical water treatment for the evaporator loop is recommended immediately at equipment start-up.

Chilled Water PumpIt is important that the chilled water pumps be wired to, and controlled by, the chiller controller. The chiller controller has the capability to selectively start pump A or B or automatically alternate pump selection and also has standby operation capability. The controller will energize the pump whenever at least one circuit on the chiller is enabled to run, whether there is a call for cooling or not. This helps ensure proper unit startup sequence. The pump will also be turned on when the water temperature goes below the Freeze Setpoint for longer than a specified time to help prevent evaporator freeze-up. Wiring connection points are shown in Figure 56 on page 60.

LEAVING FLUIDTEMP. SENSOR

VENT3/8” PIPE PLUG

VIBRATIONELIMINATOR

FLOWSWITCH

GATEVALVE

FLOW

FLOW

GATEVALVE

OUTLET

DRAIN

BALANCINGVALVE

VIBRATIONELIMINATOR

WATERSTRAINER

VALVEDPRESSURE

GAUGE

PROTECT ALL FIELD PIPINGAGAINST FREEZING

INLET



CAUTIONAdding glycol or draining the system is the recommended method of freeze protection. If the chiller does not have the ability to control the pumps and the water system is not drained in temperatures below freezing, catastrophic evaporator failure may occur. Adding glycol or draining the system is the recommended method of freeze protection. If the chiller does not have the ability to control the pumps and the water system is not drained in temperatures below freezing, catastrophic evaporator failure may occur.

Failure to allow pump control by the chiller controller may cause the following problems:

1. If any device other than the chiller attempts to start the chiller without first starting the pump, the chiller will lock out on the No Flow alarm and require manual reset.

2. If the chiller evaporator water temperature drops below the “Freeze setpoint” the chiller will attempt to start the water pumps to avoid evaporator freeze. If the chiller does not have the ability to start the pumps, the chiller will alarm due to lack of water flow.

3. If the chiller does not have the ability to control the pumps and the water system is not to be drained in temperatures below freezing, the chiller may be subject to catastrophic evaporator failure due to freezing. The freeze rating of the evaporator is based on the immersion heater and pump operation. The immersion heater itself may not be able to properly protect the evaporator from freezing without circulation of water.

Inlet Strainer GuidelinesAn inlet water strainer kit must be installed in the chilled water piping before the evaporator inlet. Two paths are available to meet this requirement:

1. A field-installed kit shipped-loose with the unit is available for all unit sizes and consists of:

• Y-type area strainer with 304 stainless steel perforated basket, Victaulic pipe connections and strainer cap [a strainer with perforations no larger than 0.125” (3.2 mm) diameter for AWS-C models].

• Extension pipe with two Schrader fittings that can be used for a pressure gauge and thermal dispersion flow switch. The pipe provides sufficient clearance from the evaporator for strainer basket removal.

• ½-inch blowdown valve • Two grooved clamps

The strainer is sized per Table 2 and has the pressure drop shown in the Strainer Pressure Drop graph. Connection sizes are given in the Pressure Drop Data section on page 82.

2. A field-supplied strainer that meets specification and installation requirements of this manual.

Table 2: Strainer Sizing Data

Strainer Size (in.)

Strainer Plus Pipe Length

(in.)

Strainer Weight

(lbs)

6 30.5 72

8 36.0 125

10 43.0 205

Figure 15: Strainer Pressure Drop

Installing Inlet Strainer (Field-installed Kit)The extension pipe is located adjacent to the evaporator with the strainer then mounted to it. The strainer must be mounted per manufacturer’s instruction with the arrows in the direction of flow; inlet and outlet are noted along with the arrows.

Use one Victaulic clamp to mount the extension pipe to the evaporator and the second to mount the strainer to the pipe. The clamps to mount the field piping to the strainer are field supplied. The piping and strainer must be supported to prevent any stress on the evaporator nozzle.

The extension pipe has two Schrader fittings that can be used as desired. The ball valve can be installed in the strainer basket cover as a blow-down valve.

System Water VolumeAll chilled water systems need adequate time to recognize a load change, respond to that load change and stabilize, without undesirable short cycling of the compressors or loss of control. In air conditioning systems, the potential for short cycling usually exists when the building load falls below the minimum chiller plant capacity or on close-coupled systems with very small water volumes.

Some of the things the designer should consider when looking at water volume are the minimum cooling load, the minimum chiller plant capacity during the low load period and the desired cycle time for the compressors.

Assuming that there are no sudden load changes and that the chiller plant has reasonable turndown, a rule of thumb of



“gallons of water volume equal to two to three times the chilled water gpm flow rate” is often used. Refer to AG 31-003 for method of calculating “Minimum Chilled Water Volume”.

A properly designed storage tank may be added if the system components do not provide sufficient water volume.

Variable Speed PumpingVariable water flow involves reducing the water flow through the evaporator as the load decreases. Daikin chillers are designed for this duty, provided that the rate of change in water flow is slow, and the minimum and maximum flow rates for the evaporator are not exceeded.

The recommended maximum change in water flow is 10 percent of the change per minute. For example, if the maximum (design) flow is 200 gpm and the flow is reduced to a minimum of 140 gpm, the change in flow is 60 gpm, so the maximum change per minute would be 10% of 60, or 6 gpm per minute. It would take ten minutes to change the flow through the entire range.

The water flow through the evaporator must remain between the minimum and maximum values listed, beginning on page 82. Note that units with variable chilled water flow can tolerate lower minimum flows than constant flow systems. If flow drops below the minimum allowable, large reductions in heat transfer can occur. Unit set point “Variable Evap Flow” must be set to “Yes”, if the chill water flow is variable. If the flow exceeds the maximum rate, excessive pressure drop and tube erosion can occur.

Evaporator Freeze ProtectionPathfinder® chillers are equipped with thermostatically controlled evaporator heaters that help protect against freeze-up down to -20°F (-28°C). The immersion heater itself may not be able to properly protect the evaporator from freezing without circulation of water, and it is important that the chilled water pumps are wired to, and controlled by, the chiller’s controller. Additionally, use at least one of the following procedures during periods of sub-freezing temperatures:

1. Add a concentration of a glycol anti-freeze with a freeze point 10°F below the lowest expected temperature. This will result in decreased capacity and increased pressure drop. Do not use automotive grade antifreezes as they contain inhibitors harmful to chilled water systems. Use only glycols specifically designated for use in building cooling systems.

2. Drain the water from outdoor equipment and piping and blow the chiller tubes dry from the chiller. Do not energize the chiller heater when water is drained from the vessel.

NOTE: The heaters come from the factory connected to the control power circuit. The control power can be rewired in the field to a separate 115V supply (do not wire directly to the heater). See the field wiring diagram on page 60. If this is done, it should power the entire control circuit. Mark the disconnect switch clearly to avoid accidental deactivation of the heater during freezing temperatures. Exposed chilled water

piping also requires protection. If the evaporator is drained for winter freeze protection, the heaters must be de-energized to prevent heater burnout.

Table 3: Freeze Protection

Temp.

°F (°C)

% Volume Glycol Concentration Required

For Freeze Protection For Burst Protection

Ethylene Glycol

Propylene Glycol

Ethylene Glycol

Propylene Glycol

20 (6.7) 16 18 11 12

10 (-12.2) 25 29 17 20

0 (-17.8) 33 36 22 24

-10 (-23.3) 39 42 26 28

-20 (-28.9) 44 46 30 30

-30 (-34.4) 48 50 30 33

-40 (-40.0) 52 54 30 35

-50 (-45.6) 56 57 30 35

-60 (-51.1) 60 60 30 35

Notes: “Freeze protection” maintains the solution in a pumpable, usable liquid state. “Burst protection” prevents pipes from rupturing, but solution may be in a gel state and not pumpable. In most applications, “burst” protection is sufficient; concentrations over 30% Ethylene Glycol or 35% Propylene Glycol will result in efficiency and capacity losses with negligible protection increases and are not recommended.

These values are examples only and cannot be appropriate to every situation. Generally, for an extended margin of protection, select a temperature at least 15°F lower than the expected lowest ambient temperature. Inhibitor levels should be adjusted for solutions less than 25% glycol.

Glycol of less than 25% concentration is not recommended, unless inhibitors are adjusted, because of the potential for bacterial growth and loss of efficiency.

Flow SwitchA flow switch must be included in the chilled water system to prove that there is adequate water flow before the unit can start. It also serves to shut down the unit in the event that water flow is interrupted in order to guard against evaporator freeze-up.

A factory-mounted, solid state, thermal dispersion flow switch is available as an option.

A field-installed and wired version for remote evaporators is also available as a kit (Accessory part number 332688401).

A paddle-type flow switch for field mounting and wiring is also available as a kit (Accessory part number 017503300). It is adaptable to pipe sizes from 1” (25mm) to 8” (203mm).

Installation should be per manufacturer’s instructions included with the switch. There is also a set of normally closed contacts on the switch that can be used for an indicator light or an alarm



to indicate when a “no flow” condition exists. Flow switches should be calibrated to shut off the unit when operatred below the minimum listed flow rate for the unit listed in the Pressure Drop section beginning on page 82. The minimum required pipe diameter before and after the switch is 1 1/4” (32 mm).

Figure 16: Flow Switch Diagram

Refrigerant ChargeAll packaged units are designed for use with R-134a and are shipped with a full operating charge. The operating charge for each unit is shown in the Physical Data Tables in the current catalog, available at www.DaikinApplied.com.

Glycol SolutionsWhen using glycol anti-freeze solutions, the chiller’s capacity, glycol solution flow rate, and pressure drop through the evaporator can be calculated using the following:

Note: The procedure below does not specify the type of glycol. Use the derate factors found in Table 4 or Table 5 for corrections when using glycol.

1. Capacity - Cooling capacity is reduced from that with plain water. To find the reduced value, multiply the chiller’s water system tonnage by the capacity correction factor to find the chiller’s capacity when using glycol.

2. Flow - To determine flow (or Delta-T) knowing Delta-T (or flow) and capacity:

GPM = (24) (tons) (flow factor) Delta T

3. Pressure drop - To determine pressure drop through the evaporator when using glycol, enter the water pressure drop curve at the water flow rate. Multiply the water pressure drop found there by the “PD” factor to obtain corrected glycol pressure drop.

4. Power - To determine glycol system kW, multiply the water system kW by the factor designated “Power”.

Test coolant with a clean, accurate glycol solution hydrometer (similar to that found in service stations) or refractometer to determine the freezing point. Obtain percent glycol from the freezing point table below. On glycol applications, the supplier normally recommends that a minimum of 25% solution by weight be used for protection against corrosion or that additional inhibitors should be employed.

CAUTIONDo not use automotive grade antifreeze. Industrial grade glycols must be used. Automotive antifreeze contains inhibitors that will cause plating on the copper tubes within the chiller evaporator. The type and handling of glycol used must be consistent with local codes.

Performance Adjustment FactorsAWS chillers are designed to operate with leaving anti-freeze solution temperatures per software range limits. Consult the local Daikin Applied sales office for performance outside these temperatures. Leaving chilled fluid temperatures below 40°F (4.4°C) result in evaporating temperatures at or below the freezing point of water and a glycol solution is required. MicroTech® III control inhibits compressor unloading at leaving fluid temperatures below 30°F (-1°C).

Low fluid temperatures or high equipment room humidity may require optional double evaporator insulation. The system designer should determine its necessity. The use of glycol will reduce the performance of the unit depending on its concentration. Take this into consideration during initial system design. On glycol applications, the supplier typically recommends that a minimum of 25% solution by weight be used for protection against corrosion, or additional inhibitors will be required.

Table 4: Ethylene Glycol Correction Factors

% E .G

Freeze PointCapacity Power Flow PD

oF oC10 26 -3.3 0.996 0.998 1.036 1.097

20 18 -7.8 0.988 0.994 1.061 1.219

30 7 -13.9 0.979 0.991 1.092 1.352

40 -7 -21.7 0.969 0.986 1.132 1.532

50 -28 -33.3 0.958 0.981 1.182 1.748

Table 5: Propylene Glycol Correction Factors

% P .G

Freeze PointCapacity Power Flow PD

oF oC10 26 -3.3 0.991 0.996 1.016 1.092

20 19 -7.2 0.981 0.991 1.032 1.195

30 9 -12.8 0.966 0.985 1.056 1.345

40 -5 -20.6 0.947 0.977 1.092 1.544

50 -27 -32.8 0.932 0.969 1.14 1.906



Electrical ConnectionsAll wiring must be done in accordance with applicable local and national codes. Pathfinder® units can be ordered with either standard multi-point power or optional single point power connections and with various disconnect and circuit breaker options. Wiring within the unit is sized in accordance with the U.S.A. National Electrical Code. Field-supplied disconnect switches are required if not factory-supplied with the unit.

Table 6: Electric Power Connection Option

Multi-Point Power Connection

Single-Point Power Connection

Standard:

Disconnect switch per circuit, no compressor isolation

circuit breakers

Optional:

one power block, compressor isolation circuit breakers

Optional:

High short circuit current rated panel with disconnect

switch and no isolation circuit breakers

Optional:

one disconnect switch replacing the power block, compressor isolation circuit

breakersOptional:

High short circuit current rated panel with disconnect

switch and compressor isolation circuit breakers

NOTE: Disconnect switches are molded case construction with lockable through-the-door handles. They can be used to remove the unit/circuit from the power system.The individual compressor isolation circuit breakers for each circuit isolate the compressor and do not have through-the-door handles. They are operable only after the panel doors are opened.The high short circuit rated panel means that a short circuit current up to the ratings shown below will be contained in the panel. There is a short period of time when the circuit breaker will short circuit before opening a circuit that can damage downstream components. In other words, the enclosure is stronger than a standard enclosure. It has a high interrupt rated disconnect switch.The factory-mounted control power transformer is protected by fuses. Condenser fans are protected and isolated by circuit breakers.

Table 7: Interrupt Ratings (kAmps)

Voltage Standard Short Circuit Rated Panel

High Short Circuit Rated Panel

208-230V / 60Hz 10kA 100kA

380V / 60Hz 10kA 65kA

460V / 60Hz 10kA 65kA

575V / 60Hz 5kA 25kA

400V / 50Hz 10kA 65kA

Disconnecting means are addressed by Article 440 of the U.S.A. National Electrical Code (NEC), which requires “disconnecting means capable of disconnecting air conditioning and refrigerating equipment including motor-compressors, and controllers from the circuit feeder.” Select and locate the disconnect switch per the NEC guidelines. Maximum recommended fuse sizes are given in the electrical data tables of this catalog for help in sizing the disconnect.

Terminals are provided in a unit control panel for optional field hookup of the control circuit to a separate fused 115-volt power supply in lieu of the standard factory installed control transformer.

RapidRestore® OptionsThis option does not require field installation. Exception: Field supplied inputs are required in the case of a backup unit being started after the power interruption rather than restarting the primary unit. A field supplied control (normally a BAS) must turn off the Backup Chiller connection on the primary chiller and turn on the connection on the backup chiller at the time of switching. See the unit Field Wiring Diagram on page 60 for the Backup Unit connection point (terminals #61 and #62).

Economizer ComponentsThe chiller may or may not have economizers depending on design capacity requirements. An economizer is a well-proven device to increase a refrigerant circuit’s capacity and efficiency.

Warm liquid from the condenser is fed into the economizer where it is cooled by flashing off liquid also from the condenser. The flash gas is piped to a compressor interstage point. Lowering the liquid refrigerant temperature to the evaporator decreases its enthalpy (heat content) and results in a greater amount of heat absorption from the chilled water.

Figure 17: Economizer Components



Figure 18: Piping Schematic with Economizer Circuit, One Circuit Shown

AWS

PAC

KA

GE

CH

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RW

ITH

EC

ON

OM

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9470

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UID

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Figure 19: Piping Schematic without Economizer Circuit, One Circuit Shown

AWS

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lIfTIng and MounTIng InforMaTIon


Figure 20: 10 Fan Non-VFD Models

17.0431

188.64791

M3L3

CO

NT

RO

L B

OX

L1M1M5

60023.6

193.3

229.15820

2225

4910

82.72100

87.6

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3.9100

M4L4 L2M2M6

330973501 0A

AWS 10 FAN DIM. DWG

UNIT SIZE VOLTAGE HZ. STARTERSHIPPING

WEIGHT

OPERATING

WEIGHT

COPPER

FIN ADD

# OF

FANSL1 L2 L3 L4 M1 M2 M3 M4 M5 M6

AWS164CDS 400V - 50HZ WYE DELTA 12535 12778 3843 3825 2439 2428 2670 2658 2255 2245 1478 1472

380-575V - 60HZ SOLID STATE 12829 13072 4015 3997 2414 2403 2805 2792 2324 2313 1422 1415

208-575V - 60HZ WYE DELTA 12535 12778 3843 3825 2439 2428 2670 2658 2255 2245 1478 1472


WEIGHT

OPERATING

WEIGHT

COPPER

FIN ADD

# OF



380-575V - 60HZ SOLID STATE 5819 5929 1821 1813 1095 1090 1272 1266 1054 1049 645 642

208-575V - 60HZ WYE DELTA 5686 5796 1743 1735 1106 1101 1211 1206 1023 1018 670 668

AWS DIMENSIONAL DATA - WEIGHTS IN LBS. LIFTING WEIGHT FOR EACH POINT LB MOUNTING LOADS FOR EACH POINT LB

1786 10AWS190CDS

AWS DIMENSIONAL DATA - WEIGHTS IN KG. LIFTING WEIGHT FOR EACH POINT KG MOUNTING LOADS FOR EACH POINT KG

810 10AWS190CDS




17.0431

188.64791

330973502 0AAWS 12 FAN DIM. DWG

M3L3

CO

NT

RO

L B

OX

L1M1M5

87.6

4910193.3

229.15820

23.6600

82.72100

2225

7.5190

3.9100

M4L4 L2M2M6


WEIGHT

OPERATING

WEIGHT

COPPER

FIN ADD

# OF


AWS174CDH 400V - 50HZ WYE DELTA 13174 13357 3823 3805 2779 2767 2598 2586 2314 2303 1782 1773



380-575V - 60HZ SOLID STATE 13470 13653 3999 3981 2751 2739 2737 2724 2383 2373 1722 1714

208-575V - 60HZ WYE DELTA 13174 13357 3823 3805 2779 2767 2598 2586 2314 2303 1782 1773

380-575V - 60HZ SOLID STATE

208-230V - 60HZ WYE DELTA

380-575V - 60HZ WYE DELTA 13290 13503 4154 3968 2643 2525 2876 2747 2431 2323 1599 1527



380-575V - 60HZ WYE DELTA 13789 14032 4283 4264 2627 2615 2982 2969 2488 2477 1562 1555


WEIGHT

OPERATING

WEIGHT

COPPER

FIN ADD

# OF


AWS174CDH 400V - 50HZ WYE DELTA 5976 6059 1734 1726 1261 1255 1179 1173 1050 1045 808 804



380-575V - 60HZ SOLID STATE 6110 6193 1814 1806 1248 1242 1241 1236 1081 1076 781 778

208-575V - 60HZ WYE DELTA 5976 6059 1734 1726 1261 1255 1179 1173 1050 1045 808 804



380-575V - 60HZ WYE DELTA 6028 6125 1884 1800 1199 1145 1304 1246 1103 1054 725 693



380-575V - 60HZ WYE DELTA 6255 6365 1943 1934 1192 1186 1353 1347 1129 1123 708 705

1416 1409 1160 1155 683 680

1083 702 671

AWS225CDS6392 6502 2023 2014 1181 1175

1872 1190 1137 1363 1302 1133

AWS DIMENSIONAL DATA - WEIGHTS IN KG. LIFTING WEIGHT FOR EACH POINT KG MOUNTING LOADS FOR EACH POINT KG

810 12

AWS210CDH

AWS210CDS6158 6254 1960

3121 3106 2558 2547 1505 1498

2387 1548 1479

AWS225CDS14092 14335 4459 4439 2603 2591

4126 2623 2506 3005 2871 2498

AWS DIMENSIONAL DATA - WEIGHTS IN LBS. LIFTING WEIGHT FOR EACH POINT LB MOUNTING LOADS FOR EACH POINT LB

1786 12

AWS210CDH

AWS210CDS13575 13788 4320




17

.04

31

18

8.6

47

91

330973503

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WG

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M4

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Figure 23: 14 Fan Non-VFD Models (continued)

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17

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79

1

26

7.4

67

91

M4

M8

L2

M2

M6

L4

L6

L8

M5

M7

CONTROL BOX

L1

M1

M3

L3

L5

L7

60

02

3.6

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0.0

76

20

49

10

82

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330973504

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D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

AW

S1

94

CD

P4

00

V -

50

HZ

WY

E D

EL

TA

16

05

71

69

09

26

48

26

36

22

56

22

46

17

72

17

64

13

70

13

64

28

13

28

00

24

77

24

66

18

49

18

41

13

35

13

29

38

0-5

75

V -

60

HZ

SO

LID

ST

AT

E1

63

58

17

21

02

76

62

75

42

32

52

31

41

77

91

77

11

32

71

32

12

92

62

91

22

55

42

54

21

85

71

84

91

28

71

28

2

20

8-5

75

V -

60

HZ

WY

E D

EL

TA

16

05

71

69

09

26

48

26

36

22

56

22

46

17

72

17

64

13

70

13

64

28

13

28

00

24

77

24

66

18

49

18

41

13

35

13

29

AW

S2

44

-26

4C

DH

40

0V

- 5

0H

ZW

YE

DE

LT

A1

67

93

17

16

03

04

83

03

42

46

72

45

51

74

91

74

11

15

31

14

73

10

33

08

92

64

22

63

01

78

01

77

21

07

41

06

9

AW

S2

64

CD

S4

00

V -

50

HZ

WY

E D

EL

TA

16

74

11

71

88

32

94

31

76

25

78

24

86

16

93

16

32

95

89

24

33

44

32

24

27

85

26

85

17

39

16

77

88

38

51

38

0-5

75

V -

60

HZ

SO

LID

ST

AT

E

20

8-5

75

V -

60

HZ

WY

E D

EL

TA

38

0-5

75

V -

60

HZ

WY

E D

EL

TA

16

79

31

71

60

30

48

30

34

24

67

24

55

17

49

17

41

11

53

11

47

31

03

30

89

26

42

26

30

17

80

17

72

10

74

10

69

AW

S2

84

CD

S4

00

V -

50

HZ

WY

E D

EL

TA

17

43

21

78

69

34

26

34

26

26

58

26

58

17

09

17

09

92

29

22

34

65

34

65

28

70

28

70

17

56

17

56

84

38

43

38

0-5

75

V -

60

HZ

SO

LID

ST

AT

E1

70

44

17

49

13

41

43

29

22

64

82

55

31

70

11

64

09

15

88

23

45

73

33

32

86

22

76

01

74

91

68

68

37

80

7

38

0-5

75

V -

60

HZ

WY

E D

EL

TA

16

74

11

71

88

32

94

31

76

25

78

24

86

16

93

16

32

95

89

24

33

44

32

24

27

85

26

85

17

39

16

77

88

38

51

38

0-5

75

V -

60

HZ

SO

LID

ST

AT

E1

77

24

18

16

13

54

73

53

12

73

02

71

81

72

11

71

38

83

87

93

58

03

56

32

95

02

93

61

76

91

76

18

03

79

9

38

0-5

75

V -

60

HZ

WY

E D

EL

TA

17

43

21

78

69

34

26

34

26

26

58

26

58

17

09

17

09

92

29

22

34

65

34

65

28

70

28

70

17

56

17

56

84

38

43

UN

IT S

IZE

VO

LT

AG

E

H

Z.

ST

AR

TE

RS

HIP

PIN

G

WE

IGH

T

OP

ER

AT

ING

WE

IGH

T

CO

PP

ER

FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

AW

S1

94

CD

P4

00

V -

50

HZ

WY

E D

EL

TA

72

83

76

70

12

01

11

96

10

23

10

19

80

48

00

62

16

19

12

76

12

70

11

24

11

19

83

98

35

60

56

03

38

0-5

75

V -

60

HZ

SO

LID

ST

AT

E7

42

07

80

61

25

51

24

91

05

51

05

08

07

80

36

02

59

91

32

71

32

11

15

81

15

38

43

83

95

84

58

1

20

8-5

75

V -

60

HZ

WY

E D

EL

TA

72

83

76

70

12

01

11

96

10

23

10

19

80

48

00

62

16

19

12

76

12

70

11

24

11

19

83

98

35

60

56

03

AW

S2

44

-26

4C

DH

40

0V

- 5

0H

ZW

YE

DE

LT

A7

61

77

78

41

38

21

37

61

11

91

11

47

93

79

05

23

52

01

40

71

40

11

19

91

19

38

07

80

44

87

48

5

AW

S2

64

CD

S4

00

V -

50

HZ

WY

E D

EL

TA

75

94

77

96

14

94

14

41

11

69

11

27

76

87

40

43

54

19

15

17

14

62

12

63

12

18

78

97

61

40

13

86

38

0-5

75

V -

60

HZ

SO

LID

ST

AT

E

20

8-5

75

V -

60

HZ

WY

E D

EL

TA

38

0-5

75

V -

60

HZ

WY

E D

EL

TA

76

17

77

84

13

82

13

76

11

19

11

14

79

37

90

52

35

20

14

07

14

01

11

99

11

93

80

78

04

48

74

85

AW

S2

84

CD

S4

00

V -

50

HZ

WY

E D

EL

TA

79

07

81

05

15

54

15

54

12

06

12

06

77

57

75

41

84

18

15

72

15

72

13

02

13

02

79

67

96

38

33

83

38

0-5

75

V -

60

HZ

SO

LID

ST

AT

E7

73

17

93

41

54

91

49

31

20

11

15

87

71

74

44

15

40

01

56

81

51

21

29

81

25

27

93

76

53

80

36

6

38

0-5

75

V -

60

HZ

WY

E D

EL

TA

75

94

77

96

14

94

14

41

11

69

11

27

76

87

40

43

54

19

15

17

14

62

12

63

12

18

78

97

61

40

13

86

38

0-5

75

V -

60

HZ

SO

LID

ST

AT

E8

03

98

23

81

60

91

60

21

23

91

23

37

81

77

74

01

39

91

62

41

61

61

33

81

33

28

02

79

93

64

36

2

38

0-5

75

V -

60

HZ

WY

E D

EL

TA

79

07

81

05

15

54

15

54

12

06

12

06

77

57

75

41

84

18

15

72

15

72

13

02

13

02

79

67

96

38

33

83

81

04

66

46

6

AW

S2

90

CD

S

AW

S3

10

CD

S

50

21

45

41

45

41

23

01

23

08

10

14

32

11

47

11

47

79

57

95

50

2

AW

S D

IME

NS

ION

AL

DA

TA

- W

EIG

HT

S IN

KG

.L

IFT

ING

WE

IGH

T F

OR

EA

CH

PO

INT

KG

MO

UN

TIN

G L

OA

DS

FO

R E

AC

H P

OIN

T K

G

10

76

16

AW

S2

40

CD

P

AW

S2

80

-30

0C

DH

77

54

79

20

14

32

17

86

10

28

10

28

AW

S2

90

CD

S

AW

S3

10

CD

S

11

08

32

06

32

06

27

11

27

11

17

86

31

58

25

29

25

29

17

52

17

52

11

08

AW

S D

IME

NS

ION

AL

DA

TA

- W

EIG

HT

S IN

LB

S.

LIF

TIN

G W

EIG

HT

FO

R E

AC

H P

OIN

T L

BM

OU

NT

ING

LO

AD

S F

OR

EA

CH

PO

INT

LB

23

72

16

AW

S2

40

CD

P

AW

S2

80

-30

0C

DH

17

09

41

74

61

31

58




17

.04

31

93

.72

38

11

88

.64

79

1

29

4.6

74

84

330973505

0A

AW

S 1

8 F

AN

DIM

. D

WG

M3

M7

CONTROL BOX

L1

M1

M5

L3

L5

L7

66

49

10

2.6

33

5.5

85

20

23

.66

00

82

.72

10

0

81

10

31

9.3

19

3.3

22

25

87

.6

7.5

19

0

3.9

10

0

M6

M8

L2

M2

M4

L4

L6

L8




330973505

0A

AW

S 1

8 F

AN

DIM

. D

WG

UN

IT S

IZE

VO

LT

AG

E

H

Z.

ST

AR

TE

RS

HIP

PIN

G

WE

IGH

T

OP

ER

AT

ING

WE

IGH

T

CO

PP

ER

FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

AW

S2

14

CD

P4

00

V -

50

HZ

WY

E D

EL

TA

17

52

71

83

29

28

26

27

37

24

76

23

98

20

43

19

79

15

59

15

10

30

09

29

14

27

02

26

17

21

27

20

60

14

73

14

27

AW

S2

44

CD

P4

00

V -

50

HZ

WY

E D

EL

TA

19

23

72

04

20

30

06

30

06

26

55

26

55

22

21

22

21

17

36

17

36

32

57

32

57

29

40

29

40

23

45

23

45

16

68

16

68

38

0-5

75

V -

60

HZ

SO

LID

ST

AT

E

20

8-2

30

V -

60

HZ

WY

E D

EL

TA

38

0-5

75

V -

60

HZ

WY

E D

EL

TA

17

52

71

83

29

28

26

27

37

24

76

23

98

20

43

19

79

15

59

15

10

30

09

29

14

27

02

26

17

21

27

20

60

14

73

14

27

38

0-5

75

V -

60

HZ

SO

LID

ST

AT

E

20

8-2

30

V -

60

HZ

WY

E D

EL

TA

38

0-5

75

V -

60

HZ

WY

E D

EL

TA

19

23

72

04

20

30

06

30

06

26

55

26

55

22

21

22

21

17

36

17

36

32

57

32

57

29

40

29

40

23

45

23

45

16

68

16

68

UN

IT S

IZE

VO

LT

AG

E H

Z.

SH

IPP

ING

WE

IGH

T

SH

IPP

ING

WE

IGH

T

OP

ER

AT

ING

WE

IGH

T

CO

PP

ER

FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

AW

S2

14

CD

P4

00

V -

50

HZ

WY

E D

EL

TA

79

50

83

14

12

82

12

41

11

23

10

88

92

78

98

70

76

85

13

65

13

22

12

26

11

87

96

59

35

66

86

47

AW

S2

44

CD

P4

00

V -

50

HZ

WY

E D

EL

TA

87

26

92

62

13

63

13

63

12

04

12

04

10

08

10

08

78

87

88

14

77

14

77

13

33

13

33

10

64

10

64

75

77

57

38

0-5

75

V -

60

HZ

SO

LID

ST

AT

E

20

8-2

30

V -

60

HZ

WY

E D

EL

TA

38

0-5

75

V -

60

HZ

WY

E D

EL

TA

79

50

83

14

12

82

12

41

11

23

10

88

92

78

98

70

76

85

13

65

13

22

12

26

11

87

96

59

35

66

86

47

38

0-5

75

V -

60

HZ

SO

LID

ST

AT

E

20

8-2

30

V -

60

HZ

WY

E D

EL

TA

38

0-5

75

V -

60

HZ

WY

E D

EL

TA

87

26

92

62

13

63

13

63

12

04

12

04

10

08

10

08

78

87

88

14

77

14

77

13

33

13

33

10

64

10

64

75

77

57

13

67

13

67

10

72

10

72

73

67

36

10

15

10

15

76

97

69

15

25

15

25

94

16

49

62

5

AW

S2

90

CD

P8

86

39

39

91

41

31

41

31

23

51

23

5

66

41

41

61

36

51

26

31

21

79

76

12

88

11

57

11

15

93

69

02

68

9

12

15

18

AW

S2

65

CD

P8

08

78

45

11

33

6

AW

S D

IME

NS

ION

AL

DA

TA

- W

EIG

HT

S IN

LB

S.

LIF

TIN

G W

EIG

HT

FO

R E

AC

H P

OIN

T L

BM

OU

NT

ING

LO

AD

S F

OR

EA

CH

PO

INT

LB

26

79

18

AW

S2

65

CD

P1

78

29

18

63

12

94

42

83

92

55

02

45

92

06

31

98

91

51

91

46

5

27

23

22

37

31

21

30

09

27

84

26

84

AW

S2

90

CD

P1

95

39

20

72

23

11

53

11

52

72

31

69

43

36

13

36

13

01

4

14

30

13

79

21

51

20

74

30

14

23

63

23

63

16

22

16

22

AW

S D

IME

NS

ION

AL

DA

TA

- W

EIG

HT

S IN

KG

.L

IFT

ING

WE

IGH

T F

OR

EA

CH

PO

INT

KG

MO

UN

TIN

G L

OA

DS

FO

R E

AC

H P

OIN

T K

G

22

37

16

94




17

.04

31

93

.72

38

1

23

4.7

59

61

33

0.1

83

84

330973506

0A

AW

S 2

0 F

AN

DIM

. D

WG

L6

M6

M8

L2

M2

M4

L4

L8

L5

M5

M7

CONTROL BOX

L1

M1

M3

L3

L7

19

3.3

22

25

66

87

.6

49

10

2.6

94

21

37

0.9

60

02

3.6

82

.72

10

0

35

4.7

90

10

7.5

19

03

.91

00




330973506

0A

AW

S 2

0 F

AN

DIM

. D

WG

UN

IT S

IZE

VO

LT

AG

E

H

Z.

ST

AR

TE

RS

HIP

PIN

G

WE

IGH

T

OP

ER

AT

ING

WE

IGH

T

CO

PP

ER

FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

AW

S2

64

-28

4C

DP

40

0V

- 5

0H

ZW

YE

DE

LT

A2

01

24

21

25

73

27

83

27

82

89

32

89

32

18

52

18

51

70

61

70

63

22

33

22

32

98

42

98

42

53

72

53

71

88

41

88

4

AW

S2

94

CD

H4

00

V -

50

HZ

WY

E D

EL

TA

19

13

91

94

61

34

63

33

38

29

44

28

38

19

91

19

20

13

47

12

98

32

56

31

39

29

27

28

22

23

12

22

29

14

14

13

63

38

0-5

75

V -

60

HZ

SO

LID

ST

AT

E

20

8-2

30

V -

60

HZ

WY

E D

EL

TA

38

0-5

75

V -

60

HZ

WY

E D

EL

TA

20

12

42

12

57

32

78

32

78

28

93

28

93

21

85

21

85

17

06

17

06

32

23

32

23

29

84

29

84

25

37

25

37

18

84

18

84

AW

S3

14

CD

H4

00

V -

50

HZ

WY

E D

EL

TA

19

84

62

01

43

35

92

35

92

30

31

30

31

19

99

19

99

13

01

13

01

33

67

33

67

30

09

30

09

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38

23

38

13

58

13

58

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S3

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-33

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40

0V

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64

19

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83

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82

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21

16

21

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24

72

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71

20

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20

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V -

60

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LID

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42

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30

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19

13

91

94

61

34

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29

44

28

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19

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V -

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66

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66

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66

63

04

33

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91

89

91

12

41

12

43

43

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03

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22

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61

16

6

38

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V -

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EL

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19

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35

58

35

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29

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29

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18

92

18

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11

62

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33

37

33

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29

58

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V -

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72

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26

61

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36

32

36

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31

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31

7

38

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75

V -

60

HZ

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19

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67

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67

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L1

L2

L3

L4

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M5

M6

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77

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86

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13

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07

59

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15

27

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10

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66

16

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40

0V

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DE

LT

A8

69

38

84

61

61

41

61

41

34

71

34

78

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85

85

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52

71

51

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21

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91

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01

02

26

21

59

9

38

0-5

75

V -

60

HZ

WY

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EL

TA

86

82

88

27

15

71

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90

38

71

61

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52

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60

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86

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58

52

75

27

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H

33

21

33

21

30

57

30

57

25

62

25

62

29

65

29

65

21

93

21

93

16

71

16

71

AW

S D

IME

NS

ION

AL

DA

TA

- W

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S IN

LB

S.

LIF

TIN

G W

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HT

FO

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AC

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BM

OU

NT

ING

LO

AD

S F

OR

EA

CH

PO

INT

LB

29

68

20

AW

S3

10

-33

0C

DP

20

42

62

15

59

33

85

33

85




17

.04

31

93

.72

38

1

21

2.6

54

01

33

0.1

83

84

M5

M7

CONTROL BOX

L1

M1

M3

L3

L5

L7

66

22

25

19

0

42

2.0

10

72

0

23

.66

00

82

.72

10

0

23

6.2

60

00

35

8.7

91

10

87

.6

2.6

7.5

3.9

10

0

330973507

0A

AW

S 2

2 F

AN

DIM

. D

WG M

6M

8L

2M

2M

4L

4L

6L

8




330973507

0A

AW

S 2

2 F

AN

DIM

. D

WG

UN

IT S

IZE

VO

LT

AG

E

H

Z.

ST

AR

TE

RS

HIP

PIN

G

WE

IGH

T

OP

ER

AT

ING

WE

IGH

T

CO

PP

ER

FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

AW

S3

14

CD

P4

00

V -

50

HZ

WY

E D

EL

TA

22

26

42

33

57

31

62

30

63

29

87

28

93

27

15

26

29

24

46

23

69

35

77

34

65

33

39

32

34

27

21

26

35

22

28

21

57

AW

S3

44

CD

H4

00

V -

50

HZ

WY

E D

EL

TA

21

31

22

15

63

32

66

32

51

29

53

29

40

24

69

24

58

19

91

19

82

34

98

34

82

31

88

31

74

23

82

23

71

17

38

17

30

46

0-5

75

V -

60

HZ

SO

LID

ST

AT

E2

25

66

23

65

93

27

13

16

83

05

82

96

22

73

02

64

42

40

52

32

93

68

23

56

63

41

83

31

12

73

32

64

72

18

62

11

7

38

0-5

75

V -

60

HZ

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E D

EL

TA

22

26

42

33

57

31

62

30

63

29

87

28

93

27

15

26

29

24

46

23

69

35

77

34

65

33

39

32

34

27

21

26

35

22

28

21

57

46

0-5

75

V -

60

HZ

SO

LID

ST

AT

E2

16

13

21

86

43

37

13

35

63

02

33

00

92

48

52

47

31

95

21

94

43

59

83

58

13

26

33

24

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39

42

38

41

70

11

69

4

38

0-5

75

V -

60

HZ

WY

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EL

TA

21

31

22

15

63

32

66

32

51

29

53

29

40

24

69

24

58

19

91

19

82

34

98

34

82

31

88

31

74

23

82

23

71

17

38

17

30

UN

IT S

IZE

VO

LT

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ST

AR

TE

RS

HIP

PIN

G

WE

IGH

T

OP

ER

AT

ING

WE

IGH

T

CO

PP

ER

FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

AW

S3

14

CD

P4

00

V -

50

HZ

WY

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EL

TA

10

09

91

05

95

14

34

13

89

13

55

13

12

12

31

11

93

11

09

10

75

16

23

15

72

15

15

14

67

12

34

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95

10

10

97

9

AW

S3

44

CD

H4

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V -

50

HZ

WY

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EL

TA

96

67

97

81

14

81

14

75

13

40

13

34

11

20

11

15

90

38

99

15

87

15

80

14

46

14

39

10

80

10

75

78

97

85

46

0-5

75

V -

60

HZ

SO

LID

ST

AT

E1

02

36

10

73

21

48

41

43

71

38

71

34

41

23

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91

09

11

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67

01

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55

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24

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20

19

92

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0

38

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75

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EL

TA

10

09

91

05

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14

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13

55

13

12

12

31

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75

16

23

15

72

15

15

14

67

12

34

11

95

10

10

97

9

46

0-5

75

V -

60

HZ

SO

LID

ST

AT

E9

80

49

91

71

52

91

52

21

37

11

36

51

12

71

12

28

86

88

21

63

21

62

41

48

01

47

41

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61

08

17

72

76

8

38

0-5

75

V -

60

HZ

WY

E D

EL

TA

96

67

97

81

14

81

14

75

13

40

13

34

11

20

11

15

90

38

99

15

87

15

80

14

46

14

39

10

80

10

75

78

97

85

14

77

22

AW

S3

65

CD

P

AW

S3

90

CD

H

AW

S D

IME

NS

ION

AL

DA

TA

- W

EIG

HT

S IN

LB

S.

LIF

TIN

G W

EIG

HT

FO

R E

AC

H P

OIN

T L

B

32

56

22

AW

S3

65

CD

P

AW

S3

90

CD

H

AW

S D

IME

NS

ION

AL

DA

TA

- W

EIG

HT

S IN

KG

.L

IFT

ING

WE

IGH

T F

OR

EA

CH

PO

INT

KG

MO

UN

TIN

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OA

DS

FO

R E

AC

H P

OIN

T K

G

MO

UN

TIN

G L

OA

DS

FO

R E

AC

H P

OIN

T L

B



Figure 32: 24 Fan 2-Circuit Non-VFD Models

17

.04

31

93

.72

38

12

12

.65

40

1

39

2.2

99

62

330973508

0A

AW

S 2

4 F

AN

DIM

. D

WG

M7

L7

CONTROL BOX

L1

M1

M3

L3

L5

M5

M9

66

22

25

19

0

45

7.5

11

62

0

23

.66

00

82

.72

10

0

23

4.2

59

49

32

0.8

81

47

41

3.4

10

49

9

87

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2.6

7.5

3.9

10

0

M8

L8

L2

M2

M4

L4

L6

M6

M1

0



Figure 33: 24 Fan 2-Circuit Non-VFD Models (continued)

330973508

0A

AW

S 2

4 F

AN

DIM

. D

WG

UN

IT S

IZE

VO

LT

AG

E

H

Z.

ST

AR

TE

RS

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PIN

G

WE

IGH

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ER

AT

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WE

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T

CO

PP

ER

FIN

AD

D

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F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

M9

M1

0

AW

S3

44

CD

P

AW

S3

74

CD

P

AW

S4

04

CD

P

40

0V

- 5

0H

ZW

YE

DE

LT

A2

37

68

24

80

13

44

43

42

83

22

33

20

82

88

12

86

82

36

42

35

33

74

13

72

43

35

33

33

82

35

92

34

91

79

21

78

41

18

41

17

9

AW

S4

24

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4C

DP

40

0V

- 5

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ZW

YE

DE

LT

A2

40

60

25

09

33

53

73

52

13

28

93

27

42

90

52

89

22

32

52

31

53

83

33

81

53

42

63

41

02

38

22

37

11

78

61

77

81

14

81

14

3

AW

S3

74

CD

H4

00

V -

50

HZ

WY

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EL

TA

22

14

92

23

54

33

19

33

04

30

61

30

47

26

62

26

49

20

58

20

49

34

71

34

56

30

91

30

77

21

16

21

07

15

60

15

53

96

39

59

46

0-5

75

V -

60

HZ

SO

LID

ST

AT

E2

40

60

25

09

33

53

73

52

13

28

93

27

42

90

52

89

22

32

52

31

53

83

33

81

53

42

63

41

02

38

22

37

11

78

61

77

81

14

81

14

3

38

0-5

75

V -

60

HZ

WY

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TA

23

76

82

48

01

34

44

34

28

32

23

32

08

28

81

28

68

23

64

23

53

37

41

37

24

33

53

33

38

23

59

23

49

17

92

17

84

11

84

11

79

46

0-5

75

V -

60

HZ

SO

LID

ST

AT

E

38

0V

- 6

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YE

DE

LT

A

46

0-5

75

V -

60

HZ

WY

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EL

TA

22

14

92

23

54

33

19

33

04

30

61

30

47

26

62

26

49

20

58

20

49

34

71

34

56

30

91

30

77

21

16

21

07

15

60

15

53

96

39

59

UN

IT S

IZE

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LT

AG

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ST

AR

TE

RS

HIP

PIN

G

WE

IGH

T

OP

ER

AT

ING

WE

IGH

T

CO

PP

ER

FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

M9

M1

0

AW

S3

44

CD

P

AW

S3

74

CD

P

AW

S4

04

CD

P

40

0V

- 5

0H

ZW

YE

DE

LT

A1

07

81

11

25

01

56

21

55

51

46

21

45

51

30

71

30

11

07

21

06

71

69

71

68

91

52

11

51

41

07

01

06

58

13

80

95

37

53

5

AW

S4

24

-43

4C

DP

40

0V

- 5

0H

ZW

YE

DE

LT

A1

09

14

11

38

21

60

51

59

71

49

21

48

51

31

81

31

21

05

51

05

01

73

91

73

01

55

41

54

71

08

01

07

58

10

80

65

21

51

8

AW

S3

74

CD

H4

00

V -

50

HZ

WY

E D

EL

TA

10

04

71

01

40

15

06

14

99

13

89

13

82

12

07

12

02

93

39

29

15

74

15

68

14

02

13

96

96

09

56

70

87

04

43

74

35

46

0-5

75

V -

60

HZ

SO

LID

ST

AT

E1

09

14

11

38

21

60

51

59

71

49

21

48

51

31

81

31

21

05

51

05

01

73

91

73

01

55

41

54

71

08

01

07

58

10

80

65

21

51

8

38

0-5

75

V -

60

HZ

WY

E D

EL

TA

10

78

11

12

50

15

62

15

55

14

62

14

55

13

07

13

01

10

72

10

67

16

97

16

89

15

21

15

14

10

70

10

65

81

38

09

53

75

35

46

0-5

75

V -

60

HZ

SO

LID

ST

AT

E

38

0V

- 6

0H

ZW

YE

DE

LT

A

46

0-5

75

V -

60

HZ

WY

E D

EL

TA

10

04

71

01

40

15

06

14

99

13

89

13

82

12

07

12

02

93

39

29

15

74

15

68

14

02

13

96

96

09

56

70

87

04

43

74

35

42

01

61

71

60

91

43

61

42

99

71

96

71

21

39

16

91

27

06

70

34

21

92

5

AW

S4

00

CD

P

AW

S4

10

CD

H1

01

84

10

27

71

54

91

54

21

41

91

41

31

21

9

31

65

21

41

21

31

15

56

15

49

92

93

41

52

67

52

02

02

01

13

56

43

54

8

AW

S D

IME

NS

ION

AL

DA

TA

- W

EIG

HT

S IN

LB

S.

LIF

TIN

G W

EIG

HT

FO

R E

AC

H P

OIN

T L

BM

OU

NT

ING

LO

AD

S F

OR

EA

CH

PO

INT

LB

35

53

24

AW

S4

00

CD

P

AW

S4

10

CD

H2

24

52

22

65

7

AW

S D

IME

NS

ION

AL

DA

TA

- W

EIG

HT

S IN

KG

.L

IFT

ING

WE

IGH

T F

OR

EA

CH

PO

INT

KG

MO

UN

TIN

G L

OA

DS

FO

R E

AC

H P

OIN

T K

G

16

12

24

33

99

31

29

31

15

26

87

31

50




17

.04

31

93

.72

38

1

25

3.4

64

38

37

8.6

96

15

L4

M7

CONTROL BOX

L1

L3

M5

L2

L6L5

L7

L8

M1

M3

M4

M2

M6

M8

21

00

82

.7

22

25

19

0

42

2.0

10

71

8

23

.66

00

87

.6

66

23

6.2

60

00

35

4.3

89

98

2.6

7.5

3.9

10

0

330973509

0A

AW

S 3

C-2

2 F

AN

DIM

. D

WG

UN

IT S

IZE

VO

LT

AG

E H

Z.

SH

IPP

ING

WE

IGH

T

OP

ER

AT

ING

WE

IGH

T

CO

PP

ER

FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

AW

S3

74

CT

S4

00

V 5

0H

Z2

34

51

24

26

03

75

93

81

13

37

33

42

02

57

12

60

61

94

21

96

93

61

83

66

83

38

03

42

72

76

22

80

02

28

62

31

8

AW

S3

94

CT

S4

00

V 5

0H

Z2

41

22

24

93

13

89

03

85

53

49

83

46

62

68

32

65

92

04

42

02

63

73

83

70

53

50

03

46

82

88

02

85

42

40

32

38

2

AW

S4

00

CT

S3

80

-57

5V

60

HZ

23

45

12

42

60

37

59

38

11

33

73

34

20

25

71

26

06

19

42

19

69

36

18

36

68

33

80

34

27

27

62

28

00

22

86

23

18

AW

S4

25

CT

S3

80

-57

5V

60

HZ

24

12

22

49

31

38

90

38

55

34

98

34

66

26

83

26

59

20

44

20

26

37

38

37

05

35

00

34

68

28

80

28

54

24

03

23

82

UN

IT S

IZE

VO

LT

AG

E H

Z.

SH

IPP

ING

WE

IGH

T

OP

ER

AT

ING

WE

IGH

T

CO

PP

ER

FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

AW

S3

74

CT

S4

00

V 5

0H

Z1

06

37

11

00

41

70

51

72

91

53

01

55

11

16

61

18

28

81

89

31

64

11

66

41

53

31

55

41

25

31

27

01

03

71

05

1

AW

S3

94

CT

S4

00

V 5

0H

Z1

09

41

11

30

91

76

51

74

81

58

71

57

21

21

71

20

69

27

91

91

69

61

68

11

58

81

57

31

30

61

29

51

09

01

08

0

AW

S4

00

CT

S3

80

-57

5V

60

HZ

10

63

71

10

04

17

05

17

29

15

30

15

51

11

66

11

82

88

18

93

16

41

16

64

15

33

15

54

12

53

12

70

10

37

10

51

AW

S4

25

CT

S3

80

-57

5V

60

HZ

10

94

11

13

09

17

65

17

48

15

87

15

72

12

17

12

06

92

79

19

16

96

16

81

15

88

15

73

13

06

12

95

10

90

10

80

AW

S D

IME

NS

ION

AL

DA

TA

- W

EIG

HT

S IN

LB

S.

LIF

TIN

G W

EIG

HT

FO

R E

AC

H P

OIN

T L

BM

OU

NT

ING

LO

AD

S F

OR

EA

CH

PO

INT

LB

32

56

22

AW

S D

IME

NS

ION

AL

DA

TA

- W

EIG

HT

S IN

KG

.L

IFT

ING

WE

IGH

T F

OR

EA

CH

PO

INT

KG

MO

UN

TIN

G L

OA

DS

FO

R E

AC

H P

OIN

T K

G

14

77

22




17

.04

31

93

.72

38

1

25

3.4

64

38

39

2.2

99

62

330973510

0A

AW

S 3

C-2

4 F

AN

DIM

. D

WG

M5

L8

M6

L6

CONTROL BOX

L1

L3

L4

M2

M7

L5

M1

0

L7

M1

M3

M4

M8

L2

M9

19

0

22

25

60

00

3.9

10

0

7.52.64

57

.51

16

20

87

.6

23

.66

00

66

41

3.4

10

49

9

23

6.2

82

.72

10

0

31

8.8

80

96

UN

IT S

IZE

VO

LT

AG

E H

Z.

SH

IPP

ING

WE

IGH

T

OP

ER

AT

ING

WE

IGH

T

CO

PP

ER

FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

M9

M1

0

AW

S4

04

CT

H4

00

V 5

0H

Z2

54

08

26

05

73

76

43

73

03

50

83

47

62

97

62

94

92

51

42

49

13

76

23

72

73

40

83

37

72

49

02

46

81

99

71

97

91

43

11

41

8

AW

S4

14

CT

S4

00

V 5

0H

Z2

56

59

26

41

84

04

64

08

33

66

63

69

92

87

42

90

02

18

62

20

64

03

64

07

33

60

23

63

52

47

32

49

61

86

71

88

41

17

11

18

2

AW

S4

34

CT

S4

00

V 5

0H

Z2

63

84

27

14

33

91

13

87

63

64

43

61

13

08

93

06

12

60

72

58

33

92

13

88

53

55

23

52

02

59

42

57

02

07

92

06

01

48

81

47

4

AW

S4

50

CT

S3

80

-57

5V

60

HZ

25

65

92

64

18

40

46

40

83

36

66

36

99

28

74

29

00

21

86

22

06

40

36

40

73

36

02

36

35

24

73

24

96

18

67

18

84

11

71

11

82

AW

S4

50

CT

H3

80

-57

5V

60

HZ

25

40

82

60

57

37

64

37

30

35

08

34

76

29

76

29

49

25

14

24

91

37

62

37

27

34

08

33

77

24

90

24

68

19

97

19

79

14

31

14

18

AW

S4

70

CT

S

38

0-5

75

V 6

0H

Z2

63

84

27

14

33

91

13

87

63

64

43

61

13

08

93

06

12

60

72

58

33

92

13

88

53

55

23

52

02

59

42

57

02

07

92

06

01

48

81

47

4

UN

IT S

IZE

VO

LT

AG

E H

Z.

SH

IPP

ING

WE

IGH

T

OP

ER

AT

ING

WE

IGH

T

CO

PP

ER

FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

M9

M1

0

AW

S4

04

CT

H4

00

V 5

0H

Z1

15

25

11

81

91

70

71

69

21

59

11

57

71

35

01

33

81

14

01

13

01

70

61

69

11

54

61

53

21

12

91

11

99

06

89

86

49

64

3

AW

S4

14

CT

S4

00

V 5

0H

Z1

16

39

11

98

31

83

51

85

21

66

31

67

81

30

31

31

59

91

10

00

18

31

18

48

16

34

16

49

11

22

11

32

84

78

55

53

15

36

AW

S4

34

CT

S

40

0V

50

HZ

11

96

81

23

12

17

74

17

58

16

53

16

38

14

01

13

89

11

83

11

72

17

79

17

62

16

11

15

97

11

77

11

66

94

39

34

67

56

69

AW

S4

50

CT

S3

80

-57

5V

60

HZ

11

63

91

19

83

18

35

18

52

16

63

16

78

13

03

13

15

99

11

00

01

83

11

84

81

63

41

64

91

12

21

13

28

47

85

55

31

53

6

AW

S4

50

CT

H3

80

-57

5V

60

HZ

11

52

51

18

19

17

07

16

92

15

91

15

77

13

50

13

38

11

40

11

30

17

06

16

91

15

46

15

32

11

29

11

19

90

68

98

64

96

43

AW

S4

70

CT

S

38

0-5

75

V 6

0H

Z1

19

68

12

31

21

77

41

75

81

65

31

63

81

40

11

38

91

18

31

17

21

77

91

76

21

61

11

59

71

17

71

16

69

43

93

46

75

66

9

AW

S D

IME

NS

ION

AL

DA

TA

- W

EIG

HT

S IN

KG

.L

IFT

ING

WE

IGH

T F

OR

EA

CH

PO

INT

KG

MO

UN

TIN

G L

OA

DS

FO

R E

AC

H P

OIN

T K

G

16

12

24

AW

S D

IME

NS

ION

AL

DA

TA

- W

EIG

HT

S IN

LB

S.

LIF

TIN

G W

EIG

HT

FO

R E

AC

H P

OIN

T L

BM

OU

NT

ING

LO

AD

S F

OR

EA

CH

PO

INT

LB

35

53

24




17

.04

31

93

.72

38

1

25

3.4

64

38

41

5.9

10

56

4

330973511

0A

AW

S 3

C-2

6 F

AN

DIM

. D

WG

M8

M1

0

CONTROL BOX

L1

L3

L4

L2

L6

L5

L7

L8

M1

M3

M4

M2

M6M5

M7

M9

19

0

10

03

.9

80

96

31

8.8

49

2.9

12

52

0

23

.66

00

82

.72

10

0

60

00

23

6.2

22

25

87

.6

7.5

41

3.4

10

50

1

UN

IT S

IZE

VO

LT

AG

E H

Z.

SH

IPP

ING

WE

IGH

T

OP

ER

AT

ING

WE

IGH

T

CO

PP

ER

FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

M9

M1

0

AW

S4

34

CT

H4

00

V 5

0H

Z2

69

38

27

54

23

87

73

77

33

67

73

57

83

26

13

17

32

83

82

76

13

76

03

65

83

46

13

36

72

68

42

61

22

26

72

20

61

78

81

74

0

AW

S4

64

CT

S4

00

V 5

0H

Z2

72

03

27

90

24

13

94

10

13

82

73

79

23

17

93

15

02

51

92

49

74

03

03

99

43

65

13

61

82

66

62

64

22

13

72

11

81

52

91

51

6

AW

S4

75

CT

H3

80

-57

5V

60

HZ

26

93

82

75

42

38

77

37

73

36

77

35

78

32

61

31

73

28

38

27

61

37

60

36

58

34

61

33

67

26

84

26

12

22

67

22

06

17

88

17

40

AW

S5

00

CT

S3

80

-57

5V

60

HZ

27

20

32

79

02

41

39

41

01

38

27

37

92

31

79

31

50

25

19

24

97

40

30

39

94

36

51

36

18

26

66

26

42

21

37

21

18

15

29

15

16

UN

IT S

IZE

VO

LT

AG

E H

Z.

SH

IPP

ING

WE

IGH

T

OP

ER

AT

ING

WE

IGH

T

CO

PP

ER

FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

M9

M1

0

AW

S4

34

CT

H4

00

V 5

0H

Z1

22

19

12

49

31

75

91

71

11

66

81

62

31

47

91

43

91

28

71

25

21

70

61

65

91

57

01

52

71

21

71

18

51

02

81

00

18

11

78

9

AW

S4

64

CT

S4

00

V 5

0H

Z1

23

39

12

65

61

87

71

86

01

73

61

72

01

44

21

42

91

14

31

13

21

82

81

81

21

65

61

64

11

20

91

19

89

69

96

16

94

68

8

AW

S4

75

CT

H3

80

-57

5V

60

HZ

12

21

91

24

93

17

59

17

11

16

68

16

23

14

79

14

39

12

87

12

52

17

06

16

59

15

70

15

27

12

17

11

85

10

28

10

01

81

17

89

AW

S5

00

CT

S3

80

-57

5V

60

HZ

12

33

91

26

56

18

77

18

60

17

36

17

20

14

42

14

29

11

43

11

32

18

28

18

12

16

56

16

41

12

09

11

98

96

99

61

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330973512

0A

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CONTROL BOX

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L4

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L5

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L8

M1

M3

M4

M2

M6

M5

M7

M9

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L1

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74

6

L6

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CONTROL BOX

L1

L3

L4

L2

M8

L5

L7

L8

M1

M3

M4

M2

M6

M5

M7

M9

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330973513

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330973513

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NS

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L2

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30



Figure 40: 10 Fan VFD Models

00

6.0152

24.0610

68.01727

96.02438

143.23638

6118240.9

205.05208

200.35089

M6

L6

L2

M2

M4

L4

M8

330973530

0A

AW

S W

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VF

D 1

0 F

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DIM

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M7

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L1

M1

M3

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NS

L1

L2

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# O

F

FA

NS

L1

L2

L3

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L5

L6

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M2

M3

M4

M5

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00

6.0152

24.0610

68.01727

96.02438

143.23638

200.35089

205.05208

240.96118

330973531

0A

AW

S W

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VF

D 1

2 F

AN

DIM

. D

WG

L6

CONTROL BOX

L1

M1

M3

L3

M5

L5

M7

BO

TT

OM

VIE

W

M2

L2

M4

L4

M6

M8

66

87.6

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F

FA

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L1

L2

L3

L4

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L6

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M2

M3

M4

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M6

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M8

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CD

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6

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00

6.0152

24.0610

68.01727

96.02438

143.23638

200.35089

205.05208

260.26608

276.37018

330973532

0A

AW

S W

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VF

D 1

4 F

AN

DIM

. D

WG

M8

M9

CONTROL BOX

L1

M1

M3

L3

M5

L5

M7

BO

TT

OM

VIE

W

M2

L2

M4

L4

M6

L6

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0

7.5

100

3.9

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190

87.6

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P.

19

UN

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D

# O

F

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L1

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01

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20

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53

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25

93

25

93

235

42

35

42

45

224

52

20

45

20

45

15

51

15

51

114

51

14

578

37

83

UN

IT S

IZE

VO

LT

AG

E H

Z.

SH

IPP

ING

WE

IGH

T

OP

ER

AT

ING

WE

IGH

T

CO

PP

ER

FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

M1

M2

M3

M4

M5

M6

M7

M8

M9

M1

0

AW

S2

30

CD

H38

0-5

75

V 6

0H

Z6

74

069

87

94

51

41

22

41

164

11

61

11

04

107

01

01

71

09

310

40

91

48

69

69

76

63

51

84

93

35

93

42

AW

S2

50

CD

H38

0-5

75

V 6

0H

Z6

99

072

36

94

51

41

25

11

251

11

76

11

76

106

81

06

81

11

211

12

92

89

28

70

47

04

51

95

19

35

53

55

AW

S D

IME

NS

ION

AL

DA

TA

- W

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HT

S IN

LB

S.

LIF

TIN

G W

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HT

FO

R E

AC

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B

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G W

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HT

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AC

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GA

WS

DIM

EN

SIO

NA

L D

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WE

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TS

IN

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B




00

6.0152

24.0610

68.01727

96.02438

143.23638

200.35089

205.05208

295.67508

311.77918

7089279.1

330973533

0A

AW

S W

ITH

VF

D 1

6 F

AN

DIM

. D

WG

M1

0L

8

CONTROL BOX

L1

M1

M3

L3

M5

L5

M7

BO

TT

OM

VIE

W

M2

L2

M4

L4

M6

L6

M8

M9

L7

7.5

10

03

.9

19

0

66

22

25

87

.6

2.6

.75

0 T

YP

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9

UN

IT S

IZE

VO

LT

AG

E H

Z.

SH

IPP

ING

WE

IGH

T

OP

ER

AT

ING

WE

IGH

T

CO

PP

ER

FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

M9

M1

0

AW

S24

0C

DP

380-5

75V

60H

Z

161

75

17

42

72

37

21

627

34

27

40

23

25

233

01

73

31

73

712

86

12

89

22

15

22

20

20

01

200

61

74

217

46

15

29

15

32

12

17

12

20

AW

S2

80

CD

H

AW

S3

00

CD

H4

60V

6

0H

Z

168

45

17

71

22

37

21

631

03

31

10

25

31

253

71

70

21

70

610

77

10

80

24

68

24

73

21

53

215

81

77

117

75

14

57

14

61

99

71

000

UN

IT S

IZE

VO

LT

AG

E H

Z.

SH

IPP

ING

WE

IGH

T

OP

ER

AT

ING

WE

IGH

T

CO

PP

ER

FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

M9

M1

0

AW

S24

0C

DP

380-5

75V

60H

Z

73

37

79

05

107

61

612

40

12

43

10

55

105

77

86

788

58

358

510

05

10

07

90

89

10

790

792

69

469

555

25

53

AW

S2

80

CD

H

AW

S3

00

CD

H4

60V

6

0H

Z

76

41

80

34

107

61

614

08

14

11

11

48

115

17

72

774

48

949

011

19

11

22

97

79

79

803

805

66

166

345

24

54

AW

S D

IME

NS

ION

AL

DA

TA

- W

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HT

S IN

LB

S.

LIF

TIN

G W

EIG

HT

FO

R E

AC

H P

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T L

B

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TIN

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HT

FO

R E

AC

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T K

GA

WS

DIM

EN

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NA

L D

AT

A -

WE

IGH

TS

IN

KG

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OU

NT

ING

LO

AD

S F

OR

EA

CH

PO

INT

KG

MO

UN

TIN

G L

OA

DS

FO

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AC

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B



Figure 44: 16 Fan VFD Models (continued)

41

01

6.1

15

68

61

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30

69

12

0.8

58

78

23

1.4

81

79

32

2.0

85

89

33

8.1

87

33

4.4

33

48

13

1.8

57

59

22

6.7

77

58

30

5.4

330973533

0A

AW

S W

/ V

FD

16

FA

N D

IM. D

WG

M8

L8

CONTROL BOX

L1

M1

M3

L3

M5

L5

M7

L7

M9

M2

L2

M4

M6

L4

L6

M1

0

87

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19

0

10

0

66

3.9

7.5

22

25

2.61

9 .75

0 T

YP

.

UN

IT S

IZE

VO

LT

AG

E

HZ

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HIP

PIN

G

WE

IGH

T

OP

ER

AT

ING

WE

IGH

T

CO

PP

ER

FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

M9

M1

0

AW

S2

80

CD

H

AW

S3

00

CD

H3

80

V 6

0H

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77

39

18

60

82

37

21

63

51

43

46

62

62

32

58

81

75

61

73

21

03

71

02

32

23

62

20

62

11

32

08

41

95

31

92

71

65

51

63

21

41

01

39

1

UN

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IZE

VO

LT

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E

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HIP

PIN

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WE

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T

CO

PP

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FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

M9

M1

0

AW

S2

80

CD

H

AW

S3

00

CD

H3

80

V 6

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68

44

11

07

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61

59

41

57

21

19

01

17

47

97

78

64

70

46

41

01

41

00

19

58

94

58

86

87

47

51

74

06

40

63

1

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ION

AL

DA

TA

- W

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HT

S IN

LB

S.

LIF

TIN

G W

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HT

FO

R E

AC

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B

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TIN

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HT

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AC

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GA

WS

DIM

EN

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NA

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WE

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IN

KG

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B




00

6.0152

24.0610

68.01727

96.02438

143.23638

200.35089

205.05208

331.08408

347.28818

7782306.4

M1

0L

8

CONTROL BOX

L1

M1

M3

L3

M5

L5

M7

BO

TT

OM

VIE

W

M2

L2

M4

L4

M6

L6

M8

M9

L7

7.5

10

03

.9

66

22

25

19

0

87

.6

2.6

.75

0 T

YP

.1

9

330973534

0B

AW

S W

ITH

VF

D 1

8 F

AN

DIM

. D

WG

UN

IT S

IZE

VO

LT

AG

E H

Z.

SH

IPP

ING

WE

IGH

T

OP

ER

AT

ING

WE

IGH

T

CO

PP

ER

FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

M9

M1

0

AW

S2

65

CD

P380-5

75V

60H

Z

17

42

41

86

76

26

79

18

28

78

28

00

25

14

244

61

98

71

93

41

45

21

41

32

32

72

26

421

41

20

83

19

15

18

64

17

30

16

83

13

52

13

16

AW

S2

90

CD

P380-5

75V

60H

Z

18

95

92

06

12

26

79

18

30

36

30

36

26

75

267

52

15

12

15

11

61

81

61

82

48

82

48

823

05

23

05

20

83

20

83

19

01

19

01

15

29

15

29

UN

IT S

IZE

VO

LT

AG

E H

Z.

SH

IPP

ING

WE

IGH

T

OP

ER

AT

ING

WE

IGH

T

CO

PP

ER

FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

M9

M1

0

AW

S2

65

CD

P380-5

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Z

79

03

84

71

12

15

18

13

05

12

70

11

40

110

99

01

87

76

59

87

76

59

64

110

56

10

27

97

19

45

86

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78

57

63

AW

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CD

P380-5

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86

00

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50

12

15

18

13

77

13

77

12

13

121

39

76

97

67

34

73

41

12

91

12

910

46

10

46

94

59

45

86

28

62

69

46

94

AW

S D

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AL

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TA

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S.

LIF

TIN

G W

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HT

FO

R E

AC

H P

OIN

T L

B

LIF

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G W

EIG

HT

FO

R E

AC

H P

OIN

T K

GA

WS

DIM

EN

SIO

NA

L D

AT

A -

WE

IGH

TS

IN

KG

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OU

NT

ING

LO

AD

S F

OR

EA

CH

PO

INT

KG

MO

UN

TIN

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OA

DS

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R E

AC

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B




97

18

38

2.6

61

02

4.0

24

38

96

.0

62

59

24

6.4

86

82

34

1.8

BO

TT

OM

VIE

W

M8

M9

M1

0

L7

CONTROL BOX

L1

M1

M3

L3

M5

L5

M7

L6

M2

L2

M4

L4

M6

L8

TY

P.

19

.75

0

17

27

15

2

68

.0

14

3.2

36

38

20

5.0

52

08

22

25

2.6

6.0

87

.6

10

0

7.5

3.9

19

0

66

93

08

36

6.5

330973535

0B

AW

S W

ITH

VF

D 2

0 F

AN

DIM

. D

WG

UN

IT S

IZE

VO

LT

AG

E

HZ.

SH

IPP

ING

WE

IGH

T

OP

ER

AT

ING

WE

IGH

T

CO

PP

ER

FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

M9

M10

AW

S310C

DP

AW

S330C

DP

460V

60H

Z

20624

23624

2968

20

3509

3509

3071

3071

2156

2156

1576

1576

2763

2763

2599

2599

2401

2401

2238

2238

1811

1811

UN

IT S

IZE

VO

LT

AG

E

HZ.

SH

IPP

ING

WE

IGH

T

OP

ER

AT

ING

WE

IGH

T

CO

PP

ER

FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

M9

M10

AW

S310C

DP

AW

S330C

DP

460V

60H

Z

9355

10716

1346

20

1592

1592

1393

1393

978

978

715

715

1253

1253

1179

1179

1089

1089

1015

1015

821

821

AW

S D

IME

NS

ION

AL

DA

TA

- W

EIG

HT

S I

N L

BS

.L

IFT

ING

WE

IGH

T F

OR

EA

CH

PO

INT

LB

MO

UN

TIN

G L

OA

DS

FO

R E

AC

H P

OIN

T L

B

AW

S D

IME

NS

ION

AL

DA

TA

- W

EIG

HT

S I

N K

G.

LIF

TIN

G W

EIG

HT

FO

R E

AC

H P

OIN

T K

GM

OU

NT

ING

LO

AD

S F

OR

EA

CH

PO

INT

KG



Figure 47: 20 Fan VFD Models (continued)

41

01

6.1

87

23

4.3

15

68

61

.7

30

69

12

0.8

33

49

13

1.9

58

78

23

1.4

69

28

27

2.8

93

53

36

8.2

99

79

39

2.9

10

38

94

09

.0

M4

L2

CONTROL BOX

L1

M1

M3

L3

M5

L5

M7

M9M

10

L7L

8L

6M

8L

4M

6M

2

3.9

7.5

10

0

66

22

25

19

0

87

.6

2.6 1

9 .75

0T

YP

.

330973535

0B

AW

S W

/ V

FD

20 F

AN

DIM

. D

WG

UN

IT S

IZE

VO

LT

AG

E

H

Z.

SH

IPP

ING

WE

IGH

T

OP

ER

AT

ING

WE

IGH

T

CO

PP

ER

FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

M9

M1

0

AW

S31

0C

DP

AW

S33

0C

DP

380

V 60

HZ

20

83

22

24

85

296

820

365

136

98

303

230

71

213

621

64

153

11

55

022

90

23

20

22

73

23

02

225

12

28

02

20

92

23

72

14

82

17

6

AW

S33

0C

DH

38

0-4

60V

6

0H

Z20

03

62

09

03

296

820

381

537

62

306

330

20

197

419

46

123

71

22

023

29

22

96

22

60

22

28

217

12

14

12

00

51

97

61

76

11

73

7

AW

S35

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DH

38

0-4

60V

6

0H

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20

72

92

15

96

296

820

391

639

67

313

631

76

200

620

31

124

11

25

723

88

24

19

23

14

23

44

221

72

24

62

03

72

06

31

77

31

79

6

UN

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VO

LT

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E

H

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SH

IPP

ING

WE

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T

OP

ER

AT

ING

WE

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T

CO

PP

ER

FIN

AD

D

# O

F

FA

NS

L1

L2

L3

L4

L5

L6

L7

L8

M1

M2

M3

M4

M5

M6

M7

M8

M9

M1

0

AW

S31

0C

DP

AW

S33

0C

DP

380

V 60

HZ

944

91

01

99

134

620

165

616

77

137

513

93

969

982

69

47

03

10

39

10

52

10

31

10

44

102

11

03

41

00

21

01

59

74

987

AW

S33

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DH

38

0-4

60V

6

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08

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82

134

620

173

017

06

138

913

70

895

883

56

15

53

10

56

10

41

10

25

10

11

98

5971

909

896

799

788

AW

S35

0C

DH

38

0-4

60V

6

0H

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940

397

96

134

620

177

617

99

142

214

41

910

921

56

35

70

10

83

10

97

10

50

10

63

100

61

01

99

24

936

804

815

AW

S D

IME

NS

ION

AL

DA

TA

- W

EIG

HT

S IN

LB

S.

LIF

TIN

G W

EIG

HT

FO

R E

AC

H P

OIN

T L

BM

OU

NT

ING

LO

AD

S F

OR

EA

CH

PO

INT

LB

AW

S D

IME

NS

ION

AL

DA

TA

- W

EIG

HT

S IN

KG

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IFT

ING

WE

IGH

T F

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CH

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INT

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MO

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34

.38

72

25

0.8

63

69

13

1.9

33

49

36

8.2

93

53

27

4.3

69

68

16

.14

10

CONTROL BOX

M7

L5

L1

M9

M3

L3

M5

M1

22

25

87

.6

10

07

8

19

0

39

6.8

15

68

2.6

61

.7

66

3.9

10

0

46

0.2

11

68

8

12

0.8

30

68

7.5

19 .75

0T

YP

.

330973536

0B

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FD

22 F

AN

DIM

. D

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2

UN

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VO

LT

AG

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IPP

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WE

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SL1

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L3

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L5

L6

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L8

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M2

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M4

M5

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M7

M8

M9

M10

AW

S365C

DP

22788

24441

3256

22

3496

3422

3125

3058

2672

2615

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2177

2441

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2449

2397

2460

2408

2489

2436

2512

2459

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DH

380-4

60V

60H

Z

380-4

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60H

Z

22033

22900

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22

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3598

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2387

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S365C

DP

10337

11086

1477

22

1586

1552

1417

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AW

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DH

380-4

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60H

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1080

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1002

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956

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KG



Figure 49: 24 Fan 2-Circuit VFD Models

34

.38

72

25

0.8

63

69

13

1.9

33

49

43

0.3

10

93

0

27

2.3

69

18

35

8.9

91

16

16

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10

330973537

0B

AW

S W

/VF

D 2

4 2

C F

AN

DIM

. D

WG

M5

L5

M9

M7

M1

1

CONTROL BOX

L1

M1

M3

L3

M1

2

49

5.6

22

25

15

68

12

0.8

10

0

30

68

12

58

9

7.5

19

0

3.9

87

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66

11

47

0

2.6

45

1.6

61

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19 .75

0T

YP

.

L6

M6

L8

M8

M1

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2M

2M

4L

4

L7

UN

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VO

LT

AG

E

HZ.

SH

IPP

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WE

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FIN

AD

D# O

F F

AN

SL1

L2

L3

L4

L5

L6

L7

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M2

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M4

M5

M6

M7

M8

M9

M10

M11

M12

AW

S400C

DP

24228

25881

3553

24

3712

3723

3335

3344

2874

2881

2177

2183

2653

2660

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2005

2011

1787

1792

1552

1557

AW

S410C

DH

380-4

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60H

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380-4

60V

60H

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22838

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3553

24

3619

3631

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3207

2682

2690

1903

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10990

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866

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825

715

718

601

603

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Figure 50: 24 Fan 3-Circuit VFD Models

34

.38

72

29

1.5

74

04

13

1.9

33

49

43

0.3

10

93

0

27

4.3

69

68

35

6.9

90

65

16

.14

10

L2

CONTROL BOX

L1

M1

M3

L3

M5

L5

M7

M9

M1

1L

7

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10

L6

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L4

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M4

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66

22

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87

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04

51

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07

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10

03

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58

94

95

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0 T

YP

.330973538

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AW

S W

VF

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L1

L2

L3

L4

L5

L6

L7

L8

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M2

M3

M4

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M9

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50

CT

H380-4

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CT

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34

.38

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52

8

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4.3

69

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9

16

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10

330973539

0B

AW

S W

ITH

VF

D 2

6 F

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DIM

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WG

CONTROL BOX

L1

M1

M3

L3

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L5

M7

M9

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1

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2

87

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19 .75

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.

L2

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38

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34

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29

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330973540

0B

AW

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28

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N D

IM. D

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CONTROL BOX

L1

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D# O

F F

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SL1

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AW

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28718

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34

.38

72

29

1.5

74

04

13

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33

49

10

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24

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27

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69

68

41

01

6.1

50

0.6

12

71

4

M9

CONTROL BOX

L1

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L3

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L5

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2

66

14

76

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81

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0

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330973541

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M4

M5

M6

M7

M8

M9

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AW

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38

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60

V

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30047

31446

4466

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2979

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2300

2270

1986

1960

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M9

M10

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S530C

TH

38

0-4

60

V

60

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13629

14264

2026

30

1987

1961

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AT

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IN

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MO

UN

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DS

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IsolaTor InforMaTIon


Transfer the unit as indicated in the Installation section, beginning on page 4. In all cases, set the unit in place and level.

When spring isolators are required, install springs running under the main unit supports.Then unit should be set initially on shims or blocks at the listed spring free height. When all unit installation tasks are complete, the springs are adjusted upward to loosen the blocks or shims that are then removed.

Install of spring isolators requires flexible piping connections and at least three feet of flexible electrical conduit to avoid straining the piping and transmitting vibration and noise.

A rubber anti-skid pad should be used under isolators if hold-down bolts are not used.

Mounting locations for each model can be found in the Lifting & Mounting Dimensions beginning on page 16.

Table 8: Spring Isolator Color Definition

Table 9: Rubber-in-Shear Color Definition

Figure 54: Spring Isolator CP-4

Figure 55: Rubber-in-Shear RP-4 Isolator Color Part Number

Red 332620400

Black 332620500

Dark Purple 332620600

Dark Green 332620800

Gray 332620900

White 332621000

Isolator Color Part Number

Brown 331481401

Red 331481402

Green 331481403

Gray 331481404

Purple 331481405

1.13 .25APPROX.

Drawing Number 331481400

3. RP-4 MOUNT VERSION WITH STUD IN PLACE.

NOTES:

MOUNT MATERIAL TO BE DURULENE RUBBER.1.

MOLDED STEEL AND ELASTOMER MOUNT FOR2.OUTDOOR SERVICE CONDITIONS.

MATERIALDURULENE

RAISED GRIP RIBS

1.63

.38

R4

R4

VM

&C

RECESSEDGRIP RIBS R.750 TYP.

.500-13NC-2B

VM

&C

4.63

TYP..28R

3.00

3.75

5.00

6.25

3.87

TYP..56

R.250 TYP.




Figure 54: Spring Isolator CP-4

Figure 55: Rubber-in-Shear RP-4

1.13 .25APPROX.

Drawing Number 331481400

3. RP-4 MOUNT VERSION WITH STUD IN PLACE.

NOTES:

MOUNT MATERIAL TO BE DURULENE RUBBER.1.

MOLDED STEEL AND ELASTOMER MOUNT FOR2.OUTDOOR SERVICE CONDITIONS.

MATERIALDURULENE

RAISED GRIP RIBS

1.63

.38

R4

R4

VM

&C

RECESSEDGRIP RIBS R.750 TYP.

.500-13NC-2B

VM

&C

4.63

TYP..28R

3.00

3.75

5.00

6.25

3.87

TYP..56

R.250 TYP.

Table 10: Spring Isolators for Non-VFD Units with Aluminum Fin Condensers UNIT SIZE

Kit P/N M1 M2 M3 M4 M5 M6 M7 M8 M9 M1060Hz 50Hz

190CDS 164CDS 332320828 Dark Green Dark Green Dark Green Dark Green Black Black N/A N/A N/A N/A



250CDS 224CDS 332320829 Gray Gray Dark Green Dark Green Black Black Red Red N/A N/A

260CDS 234CDS 332320829 Gray Gray Dark Green Dark Green Black Black Red Red N/A N/A

290CDS 264CDS 332320846 Gray Gray Dark Green Dark Green Dark Purple Dark Purple Red Red N/A N/A


350CDS 314CDS 332320847 Gray Gray Gray Gray Dark Green Dark Green Black Black N/A N/A


400CTS 374CTS 332320848 Gray Gray Gray Gray Dark Green Dark Green Dark Green Dark Green N/A N/A

425CTS 394CTS 332320848 Gray Gray Gray Gray Dark Green Dark Green Dark Green Dark Green N/A N/A

450CTS 414CTS 332320850 Gray Gray Gray Gray Dark Green Dark Green Dark Green Dark Green Black Black



525CTS 494CTS 332320835 White White White White Gray Gray Dark Green Dark Green Black Black

550CTS

514CTS

332320835 White White White White Gray Gray Dark Green Dark Green Black Black524CTS

544CTS

554CTS

210CDH 174CDH 332320828 Dark Green Dark Green Dark Green Dark Green Black Black N/A N/A N/A N/A

230CDH 204CDH 332320829 Gray Gray Dark Green Dark Green Black Black Red Red N/A N/A

250CDH 224CDH 332320829 Gray Gray Dark Green Dark Green Black Black Red Red N/A N/A

280CDH 244CDH 332320846 Gray Gray Dark Green Dark Green Dark Purple Dark Purple Red Red N/A N/A


330CDH 294CDH 332320847 Gray Gray Gray Gray Dark Green Dark Green Black Black N/A N/A


390CDH 344CDH 332320849 Gray Gray Gray Gray Dark Green Dark Green Dark Purple Dark Purple N/A N/A

410CDH 374CDH 332320834 Gray Gray Gray Gray Dark Green Dark Green Dark Purple Dark Purple Red Red

450CTH 404CTH 332320850 Gray Gray Gray Gray Dark Green Dark Green Dark Green Dark Green Black Black

475CTH 434CTH 332320850 Gray Gray Gray Gray Dark Green Dark Green Dark Green Dark Green Black Black

500CTH 454CTH 332320835 White White White White Gray Gray Dark Green Dark Green Black Black

530CTH

484CTH

332320835 White White White White Gray Gray Dark Green Dark Green Black Black

504CTH

534CTH

554CTH

574CTH

584CTH

604CTH

240CDP 194CDP 332320830 Dark Green Dark Green Dark Green Dark Green Dark Purple Dark Purple Black Black N/A N/A

265CDP 214CDP 332320847 Gray Gray Gray Gray Dark Green Dark Green Black Black N/A N/A


310CDP 264CDP 332320848 Gray Gray Gray Gray Dark Green Dark Green Dark Green Dark Green N/A N/A



400CDP

344CDP

332320833 Gray Gray Gray Gray Dark Green Dark Green Dark Purple Dark Purple Black Black

374CDP

404CDP

424CDP

434CDP



Table 11: Spring Isolators for Non-VFD Units with Copper Fin Condensers UNIT SIZE


190CDS 164CDS 332320851 Dark Green Dark Green Dark Green Dark Green Dark Purple Dark Purple N/A N/A N/A N/A

210CDS 184CDS 332320831 Gray Gray Dark Green Dark Green Dark Purple Dark Purple N/A N/A N/A N/A

225CDS 204CDS 332320831 Gray Gray Dark Green Dark Green Dark Purple Dark Purple N/A N/A N/A N/A





350CDS 314CDS 332320849 Gray Gray Gray Gray Dark Green Dark Green Dark Purple Dark Purple N/A N/A

375CDS 334CDS 332320849 Gray Gray Gray Gray Dark Green Dark Green Dark Purple Dark Purple N/A N/A

400CTS 374CTS 332320832 White White Gray Gray Gray Gray Dark Green Dark Green N/A N/A

425CTS 394CTS 332320832 White White Gray Gray Gray Gray Dark Green Dark Green N/A N/A

450CTS 414CTS 332320836 White White White White Dark Green Dark Green Dark Green Dark Green Black Black

470CTS 434CTS 332320837 White White White White Dark Green Dark Green Dark Green Dark Green Dark Purple Dark Purple

500CTS 464CTS 332320853 White White White White Gray Gray Dark Green Dark Green Dark Green Dark Green

525CTS 494CTS 332320853 White White White White Gray Gray Dark Green Dark Green Dark Green Dark Green

550CTS

514CTS

332320853 White White White White Gray Gray Dark Green Dark Green Dark Green Dark Green524CTS

544CTS

554CTS

210CDH 174CDH 332320852 Dark Green Dark Green Dark Green Dark Green Dark Green Dark Green N/A N/A N/A N/A







390CDH 344CDH 332320832 White White Gray Gray Gray Gray Dark Green Dark Green N/A N/A

410CDH 374CDH 332320836 White White White White Dark Green Dark Green Dark Green Dark Green Black Black

450CTH 404CTH 332320837 White White White White Dark Green Dark Green Dark Green Dark Green Dark Purple Dark Purple

475CTH 434CTH 332320853 White White White White Gray Gray Dark Green Dark Green Dark Green Dark Green

500CTH 454CTH 332320853 White White White White Gray Gray Dark Green Dark Green Dark Green Dark Green

530CTH

484CTH

332320853 White White White White Gray Gray Dark Green Dark Green Dark Green Dark Green

504CTH

534CTH

554CTH

574CTH

584CTH

604CTH


265CDP 214CDP 332320849 Gray Gray Gray Gray Dark Green Dark Green Dark Purple Dark Purple N/A N/A




365CDP 314CDP 332320832 White White Gray Gray Gray Gray Dark Green Dark Green N/A N/A

400CDP

344CDP

332320836 White White White White Dark Green Dark Green Dark Green Dark Green Black Black

374CDP

404CDP

424CDP

434CDP



Table 12: Rubber-in-Shear Isolators for Non-VFD Units with Aluminum Fin Condensers UNIT SIZE


190CDS 164CDS 332325828 Gray Gray Green Green Red Red N/A N/A N/A N/A



250CDS 224CDS 332325829 Gray Gray Green Green Red Red Brown Brown N/A N/A




350CDS 314CDS 332325830 Gray Gray Gray Gray Green Green Red Red N/A N/A

375CDS 334CDS 332325830 Gray Gray Gray Gray Green Green Red Red N/A N/A

400CTS 374CTS 332325843 Gray Gray Gray Gray Green Green Green Green N/A N/A

425CTS 394CTS 332325843 Gray Gray Gray Gray Green Green Green Green N/A N/A

450CTS 414CTS 332325834 Purple Purple Gray Gray Gray Gray Red Red Brown Brown

470CTS 434CTS 332325834 Purple Purple Gray Gray Gray Gray Red Red Brown Brown

500CTS 464CTS 332325844 Purple Purple Gray Gray Gray Gray Green Green Red Red

525CTS 494CTS 332325844 Purple Purple Gray Gray Gray Gray Green Green Red Red

550CTS

514CTS

332325845 Purple Purple Purple Purple Gray Gray Green Green Red Red524CTS

544CTS

554CTS

210CDH 174CDH 332325828 Gray Gray Green Green Red Red N/A N/A N/A N/A

230CDH 204CDH 332325829 Gray Gray Green Green Red Red Brown Brown N/A N/A




330CDH 294CDH 332325830 Gray Gray Gray Gray Green Green Red Red N/A N/A

350CDH 314CDH 332325830 Gray Gray Gray Gray Green Green Red Red N/A N/A

390CDH 344CDH 332325843 Gray Gray Gray Gray Green Green Green Green N/A N/A

410CDH 374CDH 332325834 Purple Purple Gray Gray Gray Gray Red Red Brown Brown

450CTH 404CTH 332325834 Purple Purple Gray Gray Gray Gray Red Red Brown Brown

475CTH 434CTH 332325844 Purple Purple Gray Gray Gray Gray Green Green Red Red

500CTH 454CTH 332325844 Purple Purple Gray Gray Gray Gray Green Green Red Red

530CTH

484CTH

332325845 Purple Purple Purple Purple Gray Gray Green Green Red Red

504CTH

534CTH

554CTH

574CTH

584CTH

604CTH

240CDP 194CDP 332325829 Gray Gray Green Green Red Red Brown Brown N/A N/A

265CDP 214CDP 332325830 Gray Gray Gray Gray Green Green Red Red N/A N/A




365CDP 314CDP 332325843 Gray Gray Gray Gray Green Green Green Green N/A N/A

400CDP

344CDP

332325834 Purple Purple Gray Gray Gray Gray Red Red Brown Brown

374CDP

404CDP

424CDP

434CDP



Table 13: Rubber-in-Shear Isolators for Non-VFD Units with Copper Fin Condensers UNIT SIZE







290CDS 264CDS 332325829 Gray Gray Gray Gray Red Red Brown Brown N/A N/A

310CDS 284CDS 332325829 Gray Gray Gray Gray Red Red Brown Brown N/A N/A

350CDS 314CDS 332325830 Purple Purple Gray Gray Gray Gray Green Green N/A N/A

375CDS 334CDS 332325830 Purple Purple Gray Gray Gray Gray Green Green N/A N/A

400CTS 374CTS 332325843 Purple Purple Gray Gray Gray Gray Green Green N/A N/A

425CTS 394CTS 332325843 Purple Purple Gray Gray Gray Gray Green Green N/A N/A

450CTS 414CTS 332325834 Purple Purple Gray Gray Green Green Red Red Red Red

470CTS 434CTS 332325834 Purple Purple Gray Gray Green Green Green Green Red Red

500CTS 464CTS 332325844 Purple Purple Purple Purple Gray Gray Green Green Red Red

525CTS 494CTS 332325844 Purple Purple Purple Purple Gray Gray Green Green Red Red

550CTS

514CTS

332325845 Purple Purple Purple Purple Gray Gray Green Green Red Red524CTS

544CTS

554CTS

210CDH 174CDH 332325828 Gray Gray Green Green Red Red N/A N/A N/A N/A



280CDH 244CDH 332325829 Gray Gray Gray Gray Red Red Brown Brown N/A N/A

300CDH 264CDH 332325829 Gray Gray Gray Gray Red Red Brown Brown N/A N/A

330CDH 294CDH 332325830 Purple Purple Gray Gray Gray Gray Green Green N/A N/A



410CDH 374CDH 332325834 Purple Purple Gray Gray Green Green Red Red Red Red

450CTH 404CTH 332325834 Purple Purple Gray Gray Green Green Green Green Red Red

475CTH 434CTH 332325844 Purple Purple Purple Purple Gray Gray Green Green Red Red

500CTH 454CTH 332325844 Purple Purple Purple Purple Gray Gray Green Green Red Red

530CTH

484CTH

332325845 Purple Purple Purple Purple Gray Gray Green Green Red Red

504CTH

534CTH

554CTH

574CTH

584CTH

604CTH

240CDP 194CDP 332325829 Gray Gray Gray Gray Gray Gray Red Red N/A N/A



310CDP 264CDP 332325830 Purple Purple Gray Gray Gray Gray Green Green N/A N/A



400CDP

344CDP

332325834 Purple Purple Gray Gray Green Green Red Red Red Red

374CDP

404CDP

424CDP

434CDP



Table 14: Spring Isolators for VFD Units with Aluminum Fin Condensers UNIT SIZE Kit P/N M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11 M12

170CDS VFD 332320821

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green N/A N/A N/A N/A

190CDS VFD 332320821

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green


200CDS VFD 332320821

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green


210CDH VFD 332320821

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green


230CDH VFD 332320822

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green Black Black Black Black N/A N/A

250CDH VFD 332320822

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green Black Black Black Black N/A N/A

280CDH VFD 332320823

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green Black Black N/A N/A

300CDH VFD 332320823

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green


330CDH VFD 332320824

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green N/A N/A

350CDH VFD 332320824

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green N/A N/A

390CDH VFD 332320824

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green N/A N/A

410CDH VFD 332320825

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Purple

Dark Purple

450CTH VFD 332320825

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Purple

Dark Purple

475CTH VFD 332320826

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

500CTH VFD 332320826

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

530CTH VFD 332320827 Gray Gray Gray Gray Gray Gray Dark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

Green

240CDP VFD 332320823

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green


265CDP VFD 332320824

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green N/A N/A

290CDP VFD 332320824

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green N/A N/A

310CDP VFD 332320824

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green N/A N/A

330CDP VFD 332320824

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green N/A N/A

365CDP VFD 332320824

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green N/A N/A

400CDP VFD 332320825

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Green

Dark Purple

Dark Purple



Table 15: Spring Isolators for VFD Units with Copper Fin Condensers UNIT SIZE Kit P/N M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11 M12

170CDS VFD 332320821 Dark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

Green N/A N/A N/A N/A


GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark



GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark


210CDH VFD 332320821 Dark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark



GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

Green Black Black Black Black N/A N/A


GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

Green Black Black Black Black N/A N/A


GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

Green N/A N/A


GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

Green N/A N/A


GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

Green N/A N/A


GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

Green N/A N/A


GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

Green N/A N/A


GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

PurpleDark

Purple

450CTH VFD 332320825 Dark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

PurpleDark

Purple

475CTH VFD 332320826 Dark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

Green


GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

Green


GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

Green

240CDP VFD 332320824 Dark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

Green N/A N/A


GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

Green N/A N/A


GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

Green N/A N/A


GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

Green N/A N/A


GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

Green N/A N/A


GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

Green N/A N/A


GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

GreenDark

PurpleDark

Purple



Table 16: Rubber-in-Shear Isolators for VFD Units with Aluminum Fin Condensers UNIT SIZE Kit P/N M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11 M12

170CDS VFD 332325821 Red Red Red Red Red Red Red Red N/A N/A N/A N/A



210CDH VFD 332325821 Red Red Red Red Red Red Red Red N/A N/A N/A N/A

230CDH VFD 332325822 Red Red Red Red Red Red Red Red Red Red N/A N/A




330CDH VFD 332325823 Green Green Green Green Green Green Green Green Green Green N/A N/A



410CDH VFD 332325824 Green Green Green Green Green Green Green Green Green Green Green Green

450CTH VFD 332325824 Green Green Green Green Green Green Green Green Green Green Green Green



530CTH VFD 332325825 Gray Gray Gray Gray Green Green Green Green Green Green Green Green

240CDP VFD 332325822 Red Red Red Red Red Red Red Red Red Red N/A N/A

265CDP VFD 332325823 Green Green Green Green Green Green Green Green Green Green N/A N/A





400CDP VFD 332325824 Green Green Green Green Green Green Green Green Green Green Green Green



Table 17: Rubber-in-Shear Isolators for VFD Units with Copper Fin Condensers UNIT SIZE Kit P/N M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11 M12

170CDS VFD 332325826 Green Green Green Green Green Green Green Green N/A N/A N/A N/A



210CDH VFD 332325826 Green Green Green Green Green Green Green Green N/A N/A N/A N/A








410CDH VFD 332325824 Green Green Green Green Green Green Green Green Green Green Green Green



500CTH VFD 332325827 Gray Gray Gray Gray Gray Gray Green Green Green Green Green Green

530CTH VFD 332325827 Gray Gray Gray Gray Gray Gray Green Green Green Green Green Green







400CDP VFD 332325824 Green Green Green Green Green Green Green Green Green Green Green Green

eleCTrICal InforMaTIon



Field WiringWiring must comply with all applicable codes and ordinances. Warranty does not cover damage to the equipment caused by wiring not complying with specifications. Pathfinder® chillers can be ordered with main power wiring for either multi-point power connection (standard) or single-point connection (optional). If the optional single-point power connection is ordered, a single power connection is made to a power block (or optional disconnect switch) in the unit power panel. A separate disconnect is required if the optional factory-mounted disconnect is not ordered. Factory-mounted isolation circuit breakers for each circuit are included as standard on all single-point connection options.

If the standard multiple-point power wiring is ordered, two power connections are required on Pathfinder® chiller models AWS###CD or three power connections on AWS###CT. They are made to factory-mounted disconnect switches or terminal blocks in the power panel. See the dimension drawings in the current Pathfinder® catalog at www.DaikinApplied.com for entry locations.

It can be desirable to have the unit evaporator heaters on a separate disconnect switch from the main unit power supply so that the unit power can be shut down without defeating the freeze protection provided by the evaporator heaters. See the field wiring diagram for connection details. The 120-volt control transformer is factory mounted and wired.

CAUTIONIf a separate disconnect is used for the 120V supply to the unit, it must power the entire control circuit. It must be clearly marked so that it is not accidentally shut off during freezing temperatures, thereby de-energizing the evaporator heaters. Freeze damage to the evaporator could result. If the evaporator is drained for winter freeze protection, the heaters must be de-energized to prevent heater burnout.

CAUTIONPathfinder® unit compressors are single-direction rotation compressors and can be damaged if rotated in the wrong direction. For this reason, proper phasing of electrical power is important. Electrical phasing must be A, B, C for electrical phases 1, 2 and 3 (A=L1, B=L2, C=L3) for single or multiple point wiring arrangements. DO NOT ALTER THE WIRING TO THE STARTERS.

Electrical Data Notes1. All field wiring to unit power block or optional nonfused

disconnect switch can be copper or aluminum wiring.

2. All wiring must be done in accordance with applicable local and national codes. Aluminum wire shall be installed in accordance with NECA/AA 104-2012, Standard for Installing Aluminum Building Wire and Cable (ANSI). Wiring sizing and wire count must fit in the power connection lug sizing shown in the field wiring tables beginning on page 80.

3. Field wire size values given in tables apply to 75°C rated wire per NEC.

4. Power Limitations:• Voltage within 10 percent of nameplate rating.• Voltage unbalance not to exceed 2% with a resultant

current unbalance of 6 to 10 times the voltage unbalance per NEMA MG-1, 1998 Standard.

5. Single-point power supply requires a single disconnect to supply electrical power to the unit. Power must be fused.

6. Multiple point power supply requires a independent power supply for each circuit.

7. External disconnect switch(s) or HACR breakers must be field supplied. A non-fused disconnect switch in the panel is an available option.

8. Unit wire size ampacity (MCA) is equal to 125% of the largest compressor-motor RLA plus 100% of RLA of all other loads in the circuit including control transformer. Wire size ampacity for separate 115V control circuit power is 15 amps.

9. Recommended time delay fuse size (RFS) is generally equal to 170% of the largest compressor motor RLA plus 100% of remaining compressor RLAs and the sum of condenser fan FLAs. Some models offer a reduced RFS option which impact ambient rating limits and leaving water temperature limits.

10. Maximum time delay fuse size or HACR breakers is equal to 225% of the largest compressor-motor RLA plus 100% of remaining compressor RLAs and the sum of condenser fan FLAs.

11. Circuit Breakers (Non-Compressor VFD Units)The circuit breaker used in the High Short Circuit panel option may have a higher trip rating than the unit Maximum Overload Protection (MOCP) value shown on the unit nameplate. The circuit breaker is installed as a service disconnect switch and does not function as branch circuit protection, mainly that the protection device must be installed at the point of origin of the power wiring. The breaker (disconnect switch) is oversized to avoid nuisance trips at high ambient temperature conditions.

12. BAS Interface

The following installation manuals for optional BAS interface modules are shipped with the chiller and can also be downloaded from www.DaikinApplied.com:• IM 966, BACnet® IP Communication Module• IM 967, BACnet® IP Communication Module MS/TP• IM 968, Modbus® Communication Module• IM 969, LonWorks® Communication Module

Current InrushInformation on compressor current inrush by starter type is available on a Technical Data report. Contact a Daikin Applied sales representative for a unit specific selection.



Figure 56: Field Wiring Diagram



Figure 57: Field Wiring Diagram (continued)



Table 18: Single Point Field Wiring Data for Non-VFD Units

Model Size Hz VoltageStandard Lug Size

Power Block Disconnect Switch HSCCR Disconnect

190CDS 60

208 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

230 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

380 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

210CDS 60

208 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

230 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

380 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

225CDS 60

208 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

230 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

380 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

250CDS 60

208 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

230 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

380 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

260CDS 60

208 (4) 2-600MCM -- --

230 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

380 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

290CDS 60

208 (4) 2-600MCM -- --

230 (4) 2-600MCM -- --

380 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

575 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

310CDS 60

230 (4) 2-600MCM -- --

380 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

575 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

350CDS 60

380 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

575 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

375CDS 60

380 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

575 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

400CTS 60

380 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

575 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

425CTS 60

380 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

575 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM



Table 19: Single-Point Field Wiring Data for Non-VFD Units (continued)



450CTS 60

380 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

575 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

470CTS 60460 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

575 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

500CTS 60460 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

575 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

525CTS 60460 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

575 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

550CTS 60460 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

575 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

210CDH 60

208 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

230 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

380 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

230CDH 60

208 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

230 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

380 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

250CDH 60

208 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

230 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

380 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

280CDH 60

208 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

230 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

380 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

300CDH 60

208 (4) 2-600MCM -- --

230 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

380 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

330CDH 60

380 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

575 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

350CDH 60

380 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

575 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

390CDH 60

380 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

575 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM






410CDH 60

380 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

575 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

450CTH 60

380 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

575 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

475CTH 60

380 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

575 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

500CTH 60460 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

575 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

530CTH 60460 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

575 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

240CDP 60

208 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

230 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

380 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

265CDP 60

208 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

230 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

380 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

290CDP 60

208 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

230 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

380 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

310CDP 60

208 (4) 2-600MCM -- --

230 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

380 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

330CDP 60

380 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

365CDP 60

380 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

575 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

400CDP 60

380 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

575 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM





Power Block Disconnect Switch HSCCR Disconnect164CDS 50 400 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

184CDS 50 400 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

204CDS 50 400 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

224CDS 50 400 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

234CDS 50 400 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

264CDS 50 400 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

284CDS 50 400 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

314CDS 50 400 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

334CDS 50 400 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

374CTS 50 400 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

394CTS 50 400 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

414CTS 50 400 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

434CTS 50 400 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

464CTS 50 400 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

494CTS 50 400 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

514CTS 50 400 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

524CTS 50 400 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

544CTS 50 400 (4) 2-600MCM -- --

554CTS 50 400 (4) 2-600MCM -- --

174CDH 50 400 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

204CDH 50 400 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

224CDH 50 400 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

244CDH 50 400 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

264CDH 50 400 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

294CDH 50 400 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

314CDH 50 400 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

344CDH 50 400 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

374CDH 50 400 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

404CTH 50 400 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

434CTH 50 400 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

454CTH 50 400 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

484CTH 50 400 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

504CTH 50 400 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

534CTH 50 400 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

554CTH 50 400 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

574CTH 50 400 (4) 2-600MCM -- --

584CTH 50 400 -- -- --

604CTH 50 400 -- -- --

194CDP 50 400 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

214CDP 50 400 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

244CDP 50 400 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

264CDP 50 400 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

284CDP 50 400 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

314CDP 50 400 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

344CDP 50 400 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

374CDP 50 400 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

404CDP 50 400 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

424CDP 50 400 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

434CDP 50 400 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM



Table 22: Single-Point Field Wiring Data for VFD Units



170CDS VFD

60

380 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (1) 2-600MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (1) 2-600MCM (2) 3/0-500MCM (2) 3/0-500MCM

190CDS VFD

60

380 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (1) 2-600MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (1) 2-600MCM (2) 3/0-500MCM (2) 3/0-500MCM

200CDS VFD

60

380 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (1) 2-600MCM (2) 3/0-500MCM (2) 3/0-500MCM

210CDH VFD

60

380 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (1) 2-600MCM (2) 3/0-500MCM (2) 3/0-500MCM

230CDH VFD

60

380 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (1) 2-600MCM (2) 3/0-500MCM (2) 3/0-500MCM

250CDH VFD

60

380 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

280CDH VFD

60380 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

300CDH VFD

60380 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

330CDH VFD

60380 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

350CDH VFD

60380 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

390CDH VFD

60380 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

410CDH VFD

60380 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

450CTH VFD

60380 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

475CTH VFD

60 460 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

500CTH VFD

60 460 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

530CTH VFD

60 460 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM



Table 23: Single-Point Field Wiring Data for VFD Units (continued)



240CDP VFD

60

380 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (1) 2-600MCM (2) 3/0-500MCM (2) 3/0-500MCM

265CDP VFD

60

380 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (1) 2-600MCM (2) 3/0-500MCM (2) 3/0-500MCM

290CDP VFD

60

380 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

310CDP VFD

60380 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (2) 6-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

330CDP VFD

60380 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (2) 6-500MCM (3) 2/0-400MCM (3) 2/0-400MCM

365CDP VFD

60380 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM

400CDP VFD

60380 (4) 2-600MCM (4) 4/0-500MCM (4) 4/0-500MCM

460 (2) 6-500MCM (4) 4/0-500MCM (4) 4/0-500MCM



Table 24: Multi-Point Field Wiring Data for Non-VFD Units

Model Size Hz VoltageDisconnect Switch - Standard Lug Size

Circuit #1 Circuit #2 Circuit #3

190CDS 60

208 (2) 3/0-500MCM (2) 3/0-500MCM --

230 (2) 3/0-500MCM (2) 3/0-500MCM --

380 (1) 6-350MCM (1) 6-350MCM --

460 (1) 6-350MCM (1) 6-350MCM --

575 (1) 6-350MCM (1) 6-350MCM --

210CDS 60

208 (2) 3/0-500MCM (2) 3/0-500MCM --

230 (2) 3/0-500MCM (2) 3/0-500MCM --

380 (1) 6-350MCM (2) 3/0-500MCM --

460 (1) 6-350MCM (1) 6-350MCM --

575 (1) 6-350MCM (1) 6-350MCM --

225CDS 60

208 (2) 3/0-500MCM (2) 3/0-500MCM --

230 (2) 3/0-500MCM (2) 3/0-500MCM --

380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (1) 6-350MCM (1) 6-350MCM --

575 (1) 6-350MCM (1) 6-350MCM --

250CDS 60

208 (2) 3/0-500MCM (3) 2/0-400MCM --

230 (2) 3/0-500MCM (2) 3/0-500MCM --

380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (1) 6-350MCM (2) 3/0-500MCM --

575 (1) 6-350MCM (1) 6-350MCM --

260CDS 60

208 (3) 2/0-400MCM (3) 2/0-400MCM --

230 (2) 3/0-500MCM (2) 3/0-500MCM --

380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (2) 3/0-500MCM (2) 3/0-500MCM --

575 (1) 6-350MCM (1) 6-350MCM --

290CDS 60

380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (2) 3/0-500MCM (2) 3/0-500MCM --

575 (1) 6-350MCM (2) 3/0-500MCM --

310CDS 60

380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (2) 3/0-500MCM (2) 3/0-500MCM --

575 (2) 3/0-500MCM (2) 3/0-500MCM --

350CDS 60

380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (2) 3/0-500MCM (2) 3/0-500MCM --

575 (2) 3/0-500MCM (2) 3/0-500MCM --

375CDS 60

380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (2) 3/0-500MCM (2) 3/0-500MCM --

575 (2) 3/0-500MCM (2) 3/0-500MCM --

400CTS 60

380 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (1) 6-350MCM (1) 6-350MCM (1) 6-350MCM

425CTS 60

380 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (1) 6-350MCM (1) 6-350MCM (2) 3/0-500MCM

450CTS 60

380 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 3/0-500MCM (2) 3/0-500MCM (1) 6-350MCM



Table 25: Multi-Point Field Wiring Data for Non-VFD Units (continued)



470CTS 60

380 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

500CTS 60

380 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

525CTS 60

380 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

550CTS 60

380 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

210CDH 60

208 (2) 3/0-500MCM (2) 3/0-500MCM --

230 (2) 3/0-500MCM (2) 3/0-500MCM --

380 (1) 6-350MCM (1) 6-350MCM --

460 (1) 6-350MCM (1) 6-350MCM --

575 (1) 6-350MCM (1) 6-350MCM --

230CDH 60

208 (2) 3/0-500MCM (2) 3/0-500MCM --

230 (2) 3/0-500MCM (2) 3/0-500MCM --

380 (1) 6-350MCM (2) 3/0-500MCM --

460 (1) 6-350MCM (1) 6-350MCM --

575 (1) 6-350MCM (1) 6-350MCM --

250CDH 60

208 (2) 3/0-500MCM (2) 3/0-500MCM --

230 (2) 3/0-500MCM (2) 3/0-500MCM --

380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (1) 6-350MCM (1) 6-350MCM --

575 (1) 6-350MCM (1) 6-350MCM --

280CDH 60

208 (2) 3/0-500MCM (3) 2/0-400MCM --

230 (2) 3/0-500MCM (2) 3/0-500MCM --

380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (1) 6-350MCM (2) 3/0-500MCM --

575 (1) 6-350MCM (1) 6-350MCM --

300CDH 60

208 (3) 2/0-400MCM (3) 2/0-400MCM --

230 (2) 3/0-500MCM (2) 3/0-500MCM --

380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (2) 3/0-500MCM (2) 3/0-500MCM --

575 (1) 6-350MCM (1) 6-350MCM --

330CDH 60

380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (2) 3/0-500MCM (2) 3/0-500MCM --

575 (1) 6-350MCM (2) 3/0-500MCM --

350CDH 60

380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (2) 3/0-500MCM (2) 3/0-500MCM --

575 (2) 3/0-500MCM (2) 3/0-500MCM --

390CDH 60

380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (2) 3/0-500MCM (2) 3/0-500MCM --

575 (2) 3/0-500MCM (2) 3/0-500MCM --






410CDH 60

380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (2) 3/0-500MCM (2) 3/0-500MCM --

575 (2) 3/0-500MCM (2) 3/0-500MCM --

450CTH 60

380 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (1) 6-350MCM (1) 6-350MCM (1) 6-350MCM

475CTH 60

380 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (1) 6-350MCM (1) 6-350MCM (2) 3/0-500MCM

500CTH 60

380 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 3/0-500MCM (2) 3/0-500MCM (1) 6-350MCM

530CTH 60

380 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

575 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

240CDP 60

208 (2) 3/0-500MCM (2) 3/0-500MCM --

230 (2) 3/0-500MCM (2) 3/0-500MCM --

380 (1) 6-350MCM (1) 6-350MCM --

460 (1) 6-350MCM (1) 6-350MCM --

575 (1) 6-350MCM (1) 6-350MCM --

265CDP 60

208 (2) 3/0-500MCM (2) 3/0-500MCM --

230 (2) 3/0-500MCM (2) 3/0-500MCM --

380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (1) 6-350MCM (1) 6-350MCM --

575 (1) 6-350MCM (1) 6-350MCM --

290CDP 60

208 (2) 3/0-500MCM (2) 3/0-500MCM --

230 (2) 3/0-500MCM (2) 3/0-500MCM --

380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (1) 6-350MCM (1) 6-350MCM --

575 (1) 6-350MCM (1) 6-350MCM --

310CDP 60

208 (2) 3/0-500MCM (4) 4/0-500MCM --

230 (2) 3/0-500MCM (2) 3/0-500MCM --

380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (2) 3/0-500MCM (2) 3/0-500MCM --

575 (1) 6-350MCM (1) 6-350MCM --

330CDP 60

208 (4) 4/0-500MCM (4) 4/0-500MCM --

230 (2) 3/0-500MCM (2) 3/0-500MCM --

380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (2) 3/0-500MCM (2) 3/0-500MCM --

575 (1) 6-350MCM (1) 6-350MCM --

365CDP 60

380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (2) 3/0-500MCM (2) 3/0-500MCM --

575 (1) 6-350MCM (2) 3/0-500MCM --

400CDP 60

380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (2) 3/0-500MCM (2) 3/0-500MCM --

575 (2) 3/0-500MCM (2) 3/0-500MCM --





Circuit #1 Circuit #2 Circuit #3164CDS 50 400 (1) 6 - 350MCM (1) 6 - 350MCM --

184CDS 50 400 (1) 6 - 350MCM (1) 6 - 350MCM --

204CDS 50 400 (1) 6 - 350MCM (1) 6 - 350MCM --

224CDS 50 400 (1) 6 - 350MCM (2) 3/0-500MCM --

234CDS 50 400 (2) 3/0-500MCM (2) 3/0-500MCM --

264CDS 50 400 (2) 3/0-500MCM (2) 3/0-500MCM --

284CDS 50 400 (2) 3/0-500MCM (2) 3/0-500MCM --

314CDS 50 400 (2) 3/0-500MCM (2) 3/0-500MCM --

334CDS 50 400 (2) 3/0-500MCM (2) 3/0-500MCM --

374CTS 50 400 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

394CTS 50 400 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

414CTS 50 400 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

434CTS 50 400 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

464CTS 50 400 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

494CTS 50 400 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

514CTS 50 400 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

524CTS 50 400 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

544CTS 50 400 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

554CTS 50 400 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

174CDH 50 400 (1) 6 - 350MCM (1) 6 - 350MCM --

204CDH 50 400 (1) 6 - 350MCM (1) 6 - 350MCM --

224CDH 50 400 (1) 6 - 350MCM (1) 6 - 350MCM --

244CDH 50 400 (1) 6 - 350MCM (2) 3/0-500MCM --

264CDH 50 400 (2) 3/0-500MCM (2) 3/0-500MCM --

294CDH 50 400 (2) 3/0-500MCM (2) 3/0-500MCM --

314CDH 50 400 (2) 3/0-500MCM (2) 3/0-500MCM --

344CDH 50 400 (2) 3/0-500MCM (2) 3/0-500MCM --

374CDH 50 400 (2) 3/0-500MCM (2) 3/0-500MCM --

404CTH 50 400 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

434CTH 50 400 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

454CTH 50 400 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

484CTH 50 400 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

504CTH 50 400 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

534CTH 50 400 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

554CTH 50 400 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

574CTH 50 400 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

584CTH 50 400 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

604CTH 50 400 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

194CDP 50 400 (1) 6 - 350MCM (1) 6 - 350MCM --

214CDP 50 400 (1) 6 - 350MCM (1) 6 - 350MCM --

244CDP 50 400 (1) 6 - 350MCM (1) 6 - 350MCM --

264CDP 50 400 (2) 3/0-500MCM (2) 3/0-500MCM --

284CDP 50 400 (2) 3/0-500MCM (2) 3/0-500MCM --

314CDP 50 400 (2) 3/0-500MCM (2) 3/0-500MCM --

344CDP 50 400 (2) 3/0-500MCM (2) 3/0-500MCM --

374CDP 50 400 (2) 3/0-500MCM (2) 3/0-500MCM --

404CDP 50 400 (2) 3/0-500MCM (2) 3/0-500MCM --

424CDP 50 400 (2) 3/0-500MCM (2) 3/0-500MCM --

434CDP 50 400 (2) 3/0-500MCM (2) 3/0-500MCM --



Table 28: Multi-Point Field Wiring Data for VFD Units

Model Size Hz VoltageCircuit Breaker - Standard Lug Size


170CDS VFD 60

380 (1) 1-600MCM & (2) 1-250MCM (1) 1-600MCM & (2) 1-250MCM --

460 (1) 3/0 - 350MCM (1) 3/0 - 350MCM --

575 (1) 3/0 - 350MCM (1) 3/0 - 350MCM --

190CDS VFD 60

380 (1) 1-600MCM & (2) 1-250MCM (1) 1-600MCM & (2) 1-250MCM --

460 (1) 1-600MCM & (2) 1-250MCM (1) 1-600MCM & (2) 1-250MCM --

575 (1) 3/0 - 350MCM (1) 3/0 - 350MCM --

200CDS VFD 60

380 (1) 1-600MCM & (2) 1-250MCM (1) 1-600MCM & (2) 1-250MCM --

460 (1) 1-600MCM & (2) 1-250MCM (1) 1-600MCM & (2) 1-250MCM --

575 (1) 3/0 - 350MCM (1) 3/0 - 350MCM --

210CDH VFD 60

380 (1) 1-600MCM & (2) 1-250MCM (1) 1-600MCM & (2) 1-250MCM --

460 (1) 1-600MCM & (2) 1-250MCM (1) 1-600MCM & (2) 1-250MCM --

575 (1) 1-600MCM & (2) 1-250MCM (1) 1-600MCM & (2) 1-250MCM --

230CDH VFD 60

380 (1) 1-600MCM & (2) 1-250MCM (2) 3/0-500MCM --

460 (1) 1-600MCM & (2) 1-250MCM (1) 1-600MCM & (2) 1-250MCM --

575 (1) 1-600MCM & (2) 1-250MCM (1) 1-600MCM & (2) 1-250MCM --

250CDH VFD 60

380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (1) 1-600MCM & (2) 1-250MCM (1) 1-600MCM & (2) 1-250MCM --

575 (1) 1-600MCM & (2) 1-250MCM (1) 1-600MCM & (2) 1-250MCM --

280CDH VFD 60380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (1) 1-600MCM & (2) 1-250MCM (2) 3/0-500MCM --

300CDH VFD 60380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (2) 3/0-500MCM (2) 3/0-500MCM --

330CDH VFD 60380 (2) 3/0-500MCM (3) 3/0 - 500MCM --

460 (2) 3/0-500MCM (2) 3/0-500MCM --

350CDH VFD 60380 (3) 3/0 - 500MCM (3) 3/0 - 500MCM --

460 (2) 3/0-500MCM (2) 3/0-500MCM --

390CDH VFD 60380 (3) 3/0 - 500MCM (3) 3/0 - 500MCM --

460 (2) 3/0-500MCM (3) 3/0 - 500MCM --

410CDH VFD 60380 (3) 3/0 - 500MCM (3) 3/0 - 500MCM --

460 (3) 3/0 - 500MCM (3) 3/0 - 500MCM --

450CTH VFD 60380 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

460 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM

475CTH VFD 60 460 (2) 3/0-500MCM (2) 3/0-500MCM (2) 3/0-500MCM





Table 29: Multi-Point Field Wiring Data for VFD Units (continued)

Model Size Hz VoltageCircuit Breaker - Standard Lug Size


240CDP VFD 60

380 (1) 1-600MCM & (2) 1-250MCM (1) 1-600MCM & (2) 1-250MCM --

460 (1) 1-600MCM & (2) 1-250MCM (1) 1-600MCM & (2) 1-250MCM --

575 (1) 1-600MCM & (2) 1-250MCM (1) 1-600MCM & (2) 1-250MCM --

265CDP VFD 60

380 (1) 1-600MCM & (2) 1-250MCM (2) 3/0-500MCM --

460 (1) 1-600MCM & (2) 1-250MCM (1) 1-600MCM & (2) 1-250MCM --

575 (1) 1-600MCM & (2) 1-250MCM (1) 1-600MCM & (2) 1-250MCM --

290CDP VFD 60

380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (1) 1-600MCM & (2) 1-250MCM (1) 1-600MCM & (2) 1-250MCM --

575 (1) 1-600MCM & (2) 1-250MCM (1) 1-600MCM & (2) 1-250MCM --

310CDP VFD 60380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (1) 1-600MCM & (2) 1-250MCM (2) 3/0-500MCM --

330CDP VFD 60380 (2) 3/0-500MCM (2) 3/0-500MCM --

460 (2) 3/0-500MCM (2) 3/0-500MCM --

365CDP VFD 60380 (2) 3/0-500MCM (3) 3/0 - 500MCM --

460 (2) 3/0-500MCM (2) 3/0-500MCM --

400CDP VFD 60380 (3) 3/0 - 500MCM (3) 3/0 - 500MCM --

460 (2) 3/0-500MCM (2) 3/0-500MCM --



Table 30: Single-Point Electrical Data for Non-VFD Units

Model Size

Hz Voltage

Ratings

(Wire 75°C for SP Power Block / Disconnect Sw, 90°C for SP HSCCR)

MCA RFS MFS

190CDS 60

208 802 1000 1000

230 725 1000 1000

380 439 600 600

460 363 450 500

575 290 350 400

210CDS 60

208 908 1200 1200

230 821 1000 1000

380 498 600 700

460 411 500 500

575 328 400 450

225CDS 60

208 981 1200 1200

230 887 1200 1200

380 538 700 700

460 444 600 600

575 354 450 450

250CDS 60

208 1092 1200 1200

230 988 1200 1200

380 598 800 800

460 494 600 700

575 395 500 500

260CDS 60

208 1169 1600 1600

230 1058 1200 1200

380 640 800 800

460 529 700 700

575 423 500 500

290CDS 60

380 725 1000 1000

460 598 800 800

575 478 600 600

310CDS 60

380 786 1000 1000

460 648 800 800

575 518 700 700

350CDS 60

380 850 1200 1200

460 702 800 800

575 561 700 700

375CDS 60

380 888 1200 1200

460 734 1000 1000

575 587 700 800

400CTS 60

380 932 1000 1000

460 770 800 800

575 615 700 700

425CTS 60

380 1008 1200 1200

460 833 1000 1000

575 665 800 800

450CTS 60

380 1077 1200 1200

460 890 1000 1000

575 711 800 800

Model Size

Hz Voltage

Ratings


MCA RFS MFS

470CTS 60

380 1138 1200 1200

460 940 1200 1200

575 751 800 800

500CTS 60

380 1194 1200 1200

460 986 1200 1200

575 789 1000 1000

525CTS 60460 1025 1200 1200

575 820 1000 1000

550CTS 60460 1064 1200 1200

575 851 1000 1000

210CDH 60

208 842 1000 1000

230 761 1000 1000

380 461 600 600

460 381 450 500

575 305 400 400

230CDH 60

208 953 1200 1200

230 862 1200 1200

380 522 700 700

460 431 600 600

575 345 450 450

250CDH 60

208 1030 1200 1200

230 932 1200 1200

380 564 700 700

460 466 600 600

575 373 450 500

280CDH 60

208 1140 1600 1600

230 1031 1200 1200

380 623 800 800

460 515 700 700

575 412 500 500

300CDH 60

208 1216 1600 1600

230 1099 1200 1200

380 664 800 800

460 549 700 700

575 439 600 600

330CDH 60

380 781 1000 1000

460 646 800 800

575 516 700 700

350CDH 60

380 861 1200 1200

460 712 800 800

575 569 700 700

390CDH 60

380 915 1200 1200

460 756 1000 1000

575 605 800 800

410CDH 60

380 960 1200 1200

460 793 1000 1000

575 634 700 800



Table 31: Single-Point Electrical Data for Non-VFD Units (continued)

Model Size

Hz Voltage

Ratings


MCA RFS MFS

450CTH 60

380 963 1200 1200

460 797 1000 1000

575 637 800 800

475CTH 60

380 1071 1200 1200

460 886 1000 1000

575 709 800 800

500CTH 60

380 1159 1200 1200

460 959 1200 1200

575 767 800 800

530CTH 60

380 1248 1200 1200

460 1032 1200 1200

575 825 1000 1000

240CDP 60

208 872 1200 1200

230 788 1000 1000

380 477 600 600

460 394 500 500

575 316 400 400

265CDP 60

208 983 1200 1200

230 889 1200 1200

380 538 700 700

460 445 600 600

575 356 450 500

290CDP 60

208 1060 1200 1200

230 959 1200 1200

380 580 700 800

460 480 600 600

575 384 450 500

310CDP 60

208 1170 1600 1600

230 1058 1200 1200

380 640 800 800

460 529 700 700

575 423 500 500

330CDP 60

380 681 800 800

460 563 700 700

575 450 600 600

365CDP 60

380 789 1000 1000

460 652 800 800

575 522 700 700

400CDP 60

380 877 1200 1200

460 725 1000 1000

575 580 700 800

Model Size

Hz Voltage

Ratings


MCA RFS MFS164CDS 50 400 355 450 450

184CDS 50 400 403 500 500

204CDS 50 400 435 600 600

224CDS 50 400 484 600 600

234CDS 50 400 517 700 700

264CDS 50 400 585 700 800

284CDS 50 400 633 800 800

314CDS 50 400 687 800 800

334CDS 50 400 717 1000 1000

374CTS 50 400 754 800 800

394CTS 50 400 814 1000 1000

414CTS 50 400 870 1000 1000

434CTS 50 400 918 1000 1000

464CTS 50 400 964 1200 1200

494CTS 50 400 1002 1200 1200

514CTS 50 400 1040 1200 1200

524CTS 50 400 1084 1200 1200

544CTS 50 400 1139 1200 1200

554CTS 50 400 1183 1200 1200

174CDH 50 400 374 450 500

204CDH 50 400 424 600 600

224CDH 50 400 457 600 600

244CDH 50 400 506 600 700

264CDH 50 400 539 700 700

294CDH 50 400 634 800 800

314CDH 50 400 697 800 800

344CDH 50 400 741 1000 1000

374CDH 50 400 778 1000 1000

404CTH 50 400 782 800 800

434CTH 50 400 869 1000 1000

454CTH 50 400 940 1200 1200

484CTH 50 400 1011 1200 1200

504CTH 50 400 1040 1200 1200

534CTH 50 400 1076 1200 1200

554CTH 50 400 1105 1200 1200

574CTH 50 400 1167 1200 1200

584CTH 50 400 1244 1600 1600

604CTH 50 400 1306 1600 1600

194CDP 50 400 390 500 500

214CDP 50 400 440 600 600

244CDP 50 400 473 600 600

264CDP 50 400 522 700 700

284CDP 50 400 555 700 700

314CDP 50 400 642 800 800

344CDP 50 400 713 800 800

374CDP 50 400 749 1000 1000

404CDP 50 400 778 1000 1000

424CDP 50 400 855 1200 1200

434CDP 50 400 917 1200 1200



Table 32: Single-Point Electrical Data for VFD Units

Model Size Hz Voltage

Ratings


MCA RFS MFS

170CDS VFD 60

380 397 500 500

460 327 400 450

575 261 300 350

190CDS VFD 60

380 449 500 600

460 370 450 500

575 295 350 400

200CDS VFD 60

380 484 600 600

460 399 500 500

575 318 400 400

210CDH VFD 60

380 504 600 700

460 417 450 / 500 500

575 334 450 / 500 450

230CDH VFD 60

380 567 700 800

460 468 500 / 600 600

575 374 500 / 600 500

250CDH VFD 60

380 611 700 800

460 504 600 700

575 402 500 500

280CDH VFD 60380 672 800 800

460 555 600 / 700 700

300CDH VFD 60380 714 800 1000

460 590 700 800

330CDH VFD 60380 803 1000 1000

460 664 700 / 800 800

350CDH VFD 60380 861 1000 1200

460 712 800 800

390CDH VFD 60380 944 1200 1200

460 780 1000 1000

410CDH VFD 60380 1012 1200 1200460 835 1000 1000

450CTH VFD 60380 1034 1200 1200

460 855 1000 1000

475CTH VFD 60 460 922 1000 1200

500CTH VFD 60 460 977 1200 1200

530CTH VFD 60 460 1032 1200 1200

Model Size

Hz Voltage

Ratings


MCA RFS MFS

240CDP VFD

60

380 520 600 700

460 430 450 / 500 500

575 345 450 / 500 450

265CDP VFD

60

380 583 700 800

460 482 500 / 600 600

575 385 500 / 600 500

290CDP VFD

60

380 627 800 800

460 518 600 700

575 413 500 500

310CDP VFD

60380 688 800 800

460 569 600 / 700 800

330CDP VFD

60380 730 800 1000

460 604 700 800

365CDP VFD

60380 811 1000 1000

460 670 700 / 800 800

400CDP VFD

60380 877 1000 1200

460 725 800 1000



Table 33: Multiple-Point Electrical Data for Non-VFD Units

Model Size Hz VoltageMultiple Point Field Data

Circuit #1 Circuit #2 Circuit #3MCA RFS MFS MCA RFS MFS MCA RFS MFS

190CDS 60

208V 441 600 700 441 600 700 - - -

230V 399 600 600 399 600 600 - - -

380V 242 350 400 242 350 400 - - -

460V 200 300 300 200 300 300 - - -

575V 160 225 250 160 225 250 - - -

210CDS 60

208V 449 600 700 540 800 800 - - -

230V 406 600 600 488 700 800 - - -

380V 246 350 400 296 450 500 - - -

460V 203 300 300 244 350 400 - - -

575V 163 250 250 195 300 300 - - -

225CDS 60

208V 540 800 800 540 800 800 - - -

230V 488 700 800 488 700 800 - - -

380V 296 450 500 296 450 500 - - -

460V 244 350 400 244 350 400 - - -

575V 195 300 300 195 300 300 - - -

250CDS 60

208V 548 800 800 644 1000 1000 - - -

230V 495 700 800 583 800 1000 - - -

380V 300 450 500 353 500 600 - - -

460V 248 350 400 291 450 500 - - -

575V 198 300 300 233 350 400 - - -

260CDS 60

208V 644 1000 1000 644 1000 1000 - - -

230V 583 800 1000 583 800 1000 - - -

380V 353 500 600 353 500 600 - - -

460V 291 450 500 291 450 500 - - -

575V 233 350 400 233 350 400 - - -

290CDS 60

380V 357 500 600 433 600 700 - - -

460V 295 450 500 357 500 600 - - -

575V 235 350 400 285 400 450 - - -

310CDS 60

380V 433 600 700 433 600 700 - - -

460V 357 500 600 357 500 600 - - -

575V 285 400 450 285 400 450 - - -

350CDS 60

380V 441 600 700 489 700 800 - - -

460V 364 500 600 404 600 700 - - -

575V 291 400 500 323 500 500 - - -

375CDS 60

380V 489 700 800 489 700 800 - - -

460V 404 600 700 404 600 700 - - -

575V 323 500 500 323 500 500 - - -



Table 34: Multiple-Point Electrical Data for Non-VFD Units (continued)



400CTS 60380V 353 500 600 353 500 600 357 500 600460V 291 450 500 291 450 500 295 450 500575V 233 350 400 233 350 400 235 350 400

425CTS 60380V 353 500 600 353 500 600 433 600 700460V 291 450 500 291 450 500 357 500 600575V 233 350 400 233 350 400 285 400 450

450CTS 60380V 433 600 700 433 600 700 357 500 600460V 357 500 600 357 500 600 295 450 500575V 285 400 450 285 400 450 235 350 400

470CTS 60380V 433 600 700 433 600 700 433 600 700460V 357 500 600 357 500 600 357 500 600575V 285 400 450 285 400 450 285 400 450

500CTS 60380V 433 600 700 433 600 700 489 700 800460V 357 500 600 357 500 600 404 600 700575V 285 400 450 285 400 450 323 500 500

525CTS 60380V 489 700 800 489 700 800 433 600 700460V 404 600 700 404 600 700 357 500 600575V 323 500 500 323 500 500 285 400 450

550CTS 60380V 489 700 800 489 700 800 489 700 800460V 404 600 700 404 600 700 404 600 700575V 323 500 500 323 500 500 323 500 500

210CDH 60

208V 463 700 700 463 700 700 - - -230V 418 600 700 418 600 700 - - -380V 253 350 400 253 350 400 - - -460V 209 300 350 209 300 350 - - -575V 168 250 250 168 250 250 - - -

230CDH 60

208V 470 700 800 566 800 800 - - -230V 425 600 700 513 700 800 - - -380V 258 350 400 310 450 500 - - -460V 213 300 350 256 350 400 - - -575V 170 250 250 205 300 350 - - -

250CDH 60

208V 566 800 800 566 800 800 - - -230V 513 700 800 513 700 800 - - -380V 310 450 500 310 450 500 - - -460V 256 350 400 256 350 400 - - -575V 205 300 350 205 300 350 - - -

280CDH 60

208V 574 800 800 669 1000 1000 - - -230V 519 700 800 604 800 1000 - - -380V 314 450 500 365 500 600 - - -460V 260 400 400 302 450 500 - - -575V 208 300 350 242 350 400 - - -

300CDH 60

208V 669 1000 1000 669 1000 1000 - - -230V 604 800 1000 604 800 1000 - - -380V 365 500 600 365 500 600 - - -460V 302 450 500 302 450 500 - - -575V 242 350 400 242 350 400 - - -

330CDH 60380V 374 500 600 474 700 800 - - -460V 309 450 500 392 600 600 - - -575V 247 350 400 313 450 500 - - -

350CDH 60

380V 474 700 800 474 700 800 - - -

460V 392 600 600 392 600 600 - - -

575V 313 450 500 313 450 500 - - -






390CDH 60

380V 474 700 800 528 800 800 - - -

460V 392 600 600 436 600 700 - - -

575V 313 450 500 349 500 600 - - -

410CDH 60

380V 528 800 800 528 800 800 - - -

460V 436 600 700 436 600 700 - - -

575V 349 500 600 349 500 600 - - -

450CTH 60

380V 365 500 600 365 500 600 365 500 600

460V 302 450 500 302 450 500 302 450 500

575V 242 350 400 242 350 400 242 350 400

475CTH 60

380V 365 500 600 365 500 600 474 700 800

460V 302 450 500 302 450 500 392 600 600

575V 242 350 400 242 350 400 313 450 500

500CTH 60

380V 474 700 800 474 700 800 365 500 600

460V 392 600 600 392 600 600 302 450 500

575V 313 450 500 313 450 500 242 350 400

530CTH 60

380V 474 700 800 474 700 800 474 700 800

460V 392 600 600 392 600 600 392 600 600

575V 313 450 500 313 450 500 313 450 500

240CDP 60

208V 478 700 800 478 700 800 - - -

230V 432 600 700 432 600 700 - - -

380V 262 350 400 262 350 400 - - -

460V 216 300 350 216 300 350 - - -

575V 173 250 250 173 250 250 - - -

265CDP 60

208V 485 700 800 581 800 800 - - -

230V 439 600 700 526 800 800 - - -

380V 266 400 400 318 450 500 - - -

460V 219 300 350 263 400 450 - - -

575V 176 250 250 211 300 350 - - -

290CDP 60

208V 581 800 800 581 800 800 - - -

230V 526 800 800 526 800 800 - - -

380V 318 450 500 318 450 500 - - -

460V 263 400 450 263 400 450 - - -

575V 211 300 350 211 300 350 - - -

310CDP 60

208V 589 800 1000 684 1000 1000 - - -

230V 533 800 800 618 1000 1000 - - -

380V 322 450 500 374 500 600 - - -

460V 267 400 450 309 450 500 - - -

575V 213 300 350 247 350 400 - - -

330CDP 60

208V 684 1000 1000 684 1000 1000 - - -

230V 618 1000 1000 618 1000 1000 - - -

380V 374 500 600 374 500 600 - - -

460V 309 450 500 309 450 500 - - -

575V 247 350 400 247 350 400 - - -

365CDP 60

380V 374 500 600 482 700 800 - - -

460V 309 450 500 398 600 600 - - -

575V 247 350 400 319 450 500 - - -

400CDP 60

380V 482 700 800 482 700 800 - - -

460V 398 600 600 398 600 600 - - -

575V 319 450 500 319 450 500 - - -






164CDS 50 400V 195 300 300 195 300 300 - - -

184CDS 50 400V 199 300 300 239 350 400 - - -

204CDS 50 400V 239 350 400 239 350 400 - - -

224CDS 50 400V 243 350 400 284 400 450 - - -

234CDS 50 400V 284 400 450 284 400 450 - - -

264CDS 50 400V 288 400 450 348 500 600 - - -

284CDS 50 400V 348 500 600 348 500 600 - - -

314CDS 50 400V 356 500 600 394 600 600 - - -

334CDS 50 400V 394 600 600 394 600 600 - - -

374CTS 50 400V 284 400 450 284 400 450 288 400 450394CTS 50 400V 284 400 450 284 400 450 348 500 600414CTS 50 400V 348 500 600 348 500 600 288 400 450434CTS 50 400V 348 500 600 348 500 600 348 500 600464CTS 50 400V 348 500 600 348 500 600 394 600 600494CTS 50 400V 394 600 600 394 600 600 348 500 600514CTS 50 400V 394 600 600 394 600 600 394 600 600524CTS 50 400V 394 600 600 394 600 600 449 600 700544CTS 50 400V 449 600 700 449 600 700 394 600 600554CTS 50 400V 449 600 700 449 600 700 449 600 700174CDH 50 400V 205 300 350 205 300 350 - - -

204CDH 50 400V 209 300 350 251 350 400 - - -

224CDH 50 400V 251 350 400 251 350 400 - - -

244CDH 50 400V 255 350 400 296 450 500 - - -

264CDH 50 400V 296 450 500 296 450 500 - - -

294CDH 50 400V 304 450 500 383 600 600 - - -

314CDH 50 400V 383 600 600 383 600 600 - - -

344CDH 50 400V 383 600 600 427 600 700 - - -

374CDH 50 400V 427 600 700 427 600 700 - - -

404CTH 50 400V 296 450 500 296 450 500 296 450 500434CTH 50 400V 296 450 500 296 450 500 383 600 600454CTH 50 400V 383 600 600 383 600 600 296 450 500484CTH 50 400V 383 600 600 383 600 600 383 600 600504CTH 50 400V 383 600 600 383 600 600 419 600 700534CTH 50 400V 419 600 700 419 600 700 383 600 600554CTH 50 400V 419 600 700 419 600 700 419 600 700574CTH 50 400V 419 600 700 419 600 700 496 700 800584CTH 50 400V 496 700 800 496 700 800 419 600 700604CTH 50 400V 496 700 800 496 700 800 496 700 800194CDP 50 400V 213 300 350 213 300 350 - - -

214CDP 50 400V 217 300 350 259 350 400 - - -

244CDP 50 400V 259 350 400 259 350 400 - - -

264CDP 50 400V 263 350 400 304 450 500 - - -

284CDP 50 400V 304 450 500 391 600 600 - - -

314CDP 50 400V 391 600 600 391 600 600 - - -

344CDP 50 400V 391 600 600 427 600 700 - - -

374CDP 50 400V 304 450 500 304 450 500 - - -

404CDP 50 400V 427 600 700 427 600 700 - - -

424CDP 50 400V 427 600 700 504 700 800 - - -

434CDP 50 400V 504 700 800 504 700 800 - - -



Table 37: Multiple-Point Electrical Data for VFD Units

Model Size VoltageMultiple Point Field Data

Hz Circuit #1 Circuit #2 Circuit #3MCA RFS MFS MCA RFS MFS MCA RFS MFS

170CDS VFD 60

380V 218 300 350 218 300 350 - - -

460V 180 250 300 180 250 300 - - -

575V 144 200 225 144 200 225 - - -

190CDS VFD 60

380V 222 300 350 266 400 450 - - -

460V 183 250 300 219 300 350 - - -

575V 146 225 250 175 250 300 - - -

200CDS VFD 60

380V 266 400 450 266 400 450 - - -

460V 219 300 350 219 300 350 - - -

575V 175 250 300 175 250 300 - - -

210CDH VFD 60

380V 277 400 450 277 400 450 - - -

460V 229 350 350 229 350 350 - - -

575V 184 250 300 184 250 300 - - -

230CDH VFD 60

380V 281 400 450 336 500 500 - - -

460V 233 350 400 278 400 450 - - -

575V 186 250 300 221 300 350 - - -

250CDH VFD 60

380V 336 500 500 336 500 500 - - -

460V 278 400 450 278 400 450 - - -

575V 221 300 350 221 300 350 - - -

280CDH VFD 60380V 340 500 500 393 600 600 - - -

460V 281 400 450 325 500 500 - - -

300CDH VFD 60380V 393 600 600 393 600 600 - - -

460V 325 500 500 325 500 500 - - -

330CDH VFD 60380V 401 600 600 474 700 800 - - -

460V 332 500 500 392 600 600 - - -

350CDH VFD 60380V 474 700 800 474 700 800 - - -

460V 392 600 600 392 600 600 - - -

390CDH VFD 60380V 474 700 800 557 800 800 - - -

460V 392 600 600 460 700 700 - - -

410CDH VFD 60380V 557 800 800 557 800 800 - - -

460V 460 700 700 460 700 700 - - -

450CTH VFD 60380V 393 600 600 393 600 600 393 600 600

460V 325 500 500 325 500 500 325 500 500

475CTH VFD 60 460V 325 500 500 325 500 500 392 600 600

500CTH VFD 60 460V 392 600 600 392 600 600 325 500 500

530CTH VFD 60 460V 392 600 600 392 600 600 392 600 600

240CDP VFD 60

380V 285 400 450 285 400 450 - - -

460V 236 350 400 236 350 400 - - -

575V 189 250 300 189 250 300 - - -

265CDP VFD 60

380V 289 400 450 344 500 500 - - -

460V 239 350 400 284 400 450 - - -

575V 192 250 300 227 300 350 - - -

290CDP VFD 60

380V 344 500 500 344 500 500 - - -

460V 284 400 450 284 400 450 - - -

575V 227 300 350 227 300 350 - - -

310CDP VFD 60380V 349 500 500 401 600 600 - - -

460V 288 400 450 332 500 500 - - -

330CDP VFD 60380V 401 600 600 401 600 600 - - -

460V 332 500 500 332 500 500 - - -

365CDP VFD 60380V 401 600 600 482 700 800 - - -

460V 332 500 500 398 600 600 - - -

400CDP VFD 60380V 482 700 800 482 700 800 - - -

460V 398 600 600 398 600 600 - - -


pressure drop daTa

pressure drop daTa

Figure 58: Evaporator Model EV40271010/9 (6” Connection)

Model Hz

Variable Flow System Only - Minimum Flow Rate

(Unit Unloaded)

Fixed Flow System Only Minimum Flow Rate 18F Delta

(Unit 100% Load)Nominal (100% Loaded) Maximum

GPM DP ft . l/s m3/h DP

kpa GPM DP ft . l/s m3/h DP

kpa GPM DP ft . l/s m3/h DP kpa GPM DP

ft . l/s m3/h DP kpa

164CDS 50 114.5 1.4 7.2 26.0 4.2 212.1 4.1 13.4 48.2 12.3 381.7 11.8 24.1 86.7 35.2

596.1 26.2 37.6 135.4 78.3

184CDS 50 130.1 1.7 8.2 29.5 5.0 240.9 5.3 15.2 54.7 15.9 433.6 14.7 27.4 98.5 44.0

190CDS 60 129.7 1.7 8.2 29.5 5.0 240.1 5.3 15.2 54.5 15.9 432.2 15.0 27.3 98.2 44.9

204CDS 50 142.8 1.9 9.0 32.4 5.7 264.5 6.2 16.7 60.1 18.5 476.0 17.7 30.0 108.1 52.8

170CDS VFD 60 117.1 1.4 7.4 26.6 4.2 216.8 4.4 13.7 49.2 13.2 390.2 12.4 24.6 88.6 37.0

190CDS VFD 60 132.0 1.7 8.3 30.0 5.0 244.4 5.3 15.4 55.5 15.8 439.9 15.3 27.8 99.9 45.8

NOTE: If variable flow minimum is used, the controller setpoint must be changed to reflect same.

0

10

20

30

0 100 200 300 400 500 600 700

PD(ft)

Flow Rate (gpm)

AWS-C Evaporator Pressure Drop Curves Evaporator EV40271010/9

pressure drop daTa



Model Hz


(Unit Unloaded)







kpa

174CDH 50 125.4 1.2 7.9 28.5 3.4 232.2 3.1 14.7 52.7 9.4 418.0 8.8 26.4 94.9 26.4

745.0 25.3 47.0 169.2 75.7

204CDH 50 141.6 1.4 8.9 32.2 4.1 262.3 4.0 16.5 59.6 11.9 472.1 11.1 29.8 107.2 33.2

210CDS 60 144.9 1.4 9.1 32.9 4.2 268.4 4.0 16.9 61.0 11.9 483.1 11.7 30.5 109.7 34.9

210CDH 60 148.1 1.5 9.3 33.6 4.4 274.3 4.3 17.3 62.3 12.8 493.7 12.2 31.1 112.1 36.6

224CDH 50 156.5 1.6 9.9 35.5 4.7 289.8 4.6 18.3 65.8 13.6 521.6 13.4 32.9 118.5 40.0

224CDS 50 157.0 1.6 9.9 35.7 4.7 290.7 4.6 18.3 66.0 13.6 523.3 13.4 33.0 118.9 40.0

210CDH VFD 60 147.7 1.4 9.3 33.6 4.2 273.6 4.3 17.3 62.1 12.8 492.5 12.2 31.1 111.9 36.6


0

10

20

30

0 100 200 300 400 500 600 700 800

PD(ft)

Flow Rate (gpm)



pressure drop daTa


Model Hz


(Unit Unloaded)







kpa

225CDS 60 155.7 1.7 9.8 35.4 5.1 288.4 5.1 18.2 65.5 15.3 519.1 14.5 32.8 117.9 43.4

745.0 28.2 47.0 169.2 84.2

230CDH 60 162.1 1.8 10.2 36.8 5.4 300.3 5.4 18.9 68.2 16.2 540.5 15.6 34.1 122.8 46.8

234CDS 50 169.7 2.0 10.7 38.5 5.9 314.3 6.0 19.8 71.4 17.9 565.7 16.8 35.7 128.5 50.2

250CDH 60 173.2 2.0 10.9 39.3 6.1 320.8 6.3 20.2 72.9 18.7 577.4 17.4 36.4 131.2 51.9

200CDS VFD 60 140.5 1.4 8.9 31.9 4.2 260.1 4.3 16.4 59.1 12.8 468.2 11.9 29.5 106.3 35.7

230CDH VFD 60 161.9 1.7 10.2 36.8 5.0 299.7 5.4 18.9 68.1 16.2 539.5 15.6 34.0 122.5 46.8

250CDH VFD 60 172.8 1.8 10.9 39.2 5.4 320.0 6.3 20.2 72.7 18.7 576.0 17.4 36.3 130.8 51.9


0

10

20

30

0 100 200 300 400 500 600 700 800

PD(ft)

Flow Rate (gpm)



pressure drop daTa


Model Hz


(Unit Unloaded)






kpa GPM DP ft . l/s m3/h DP kpa

250CDS 60 169.8 1.3 10.7 38.6 3.9 314.4 4.1 19.8 71.4 12.3 565.9 12.1 35.7 128.5 36.2999.5 33.8 63.1 227.0 100.9

260CDS 60 180.4 1.5 11.4 41.0 4.5 334.0 4.7 21.1 75.9 13.9 601.2 13.4 37.9 136.5 40.0


0

10

20

30

40

0 200 400 600 800 1000 1200

PD(ft)

Flow Rate (gpm)


pressure drop daTa



Model Hz


(Unit Unloaded)







kpa

244CDH 50 176.9 1.6 11.2 40.2 4.8 327.6 4.9 20.7 74.4 14.8 589.6 13.7 37.2 133.9 41.0

876.2 28.0 55.3 199.0 83.6

264CDH 50 190.8 1.9 12.0 43.3 5.6 353.3 5.5 22.3 80.2 16.4 635.9 15.6 40.1 144.4 46.7

264CDS 50 191.0 1.9 12.0 43.4 5.7 353.7 5.5 22.3 80.3 16.4 636.6 15.6 40.2 144.6 46.7

280CDH 60 195.8 2.0 12.4 44.5 5.9 362.5 6.0 22.9 82.3 18.0 652.6 16.5 41.2 148.2 49.2

284CDS 50 204.7 2.2 12.9 46.5 6.5 379.1 6.3 23.9 86.1 18.9 682.4 17.8 43.1 155.0 53.3

300CDH 60 207.9 2.2 13.1 47.2 6.7 384.9 6.6 24.3 87.4 19.7 692.9 18.4 43.7 157.4 54.9

294CDH 50 211.3 2.3 13.3 48.0 6.9 391.3 6.6 24.7 88.9 19.7 704.3 18.9 44.4 160.0 56.6

280CDH VFD 60 194.8 1.9 12.3 44.3 5.7 360.8 5.8 22.8 81.9 17.2 649.4 16.5 41.0 147.5 49.2

300CDH VFD 60 207.1 2.0 13.1 47.0 6.0 383.6 6.6 24.2 87.1 19.7 690.5 18.4 43.6 156.8 54.9


0

10

20

30

0 100 200 300 400 500 600 700 800 900 1000

PD(ft)

Flow Rate (gpm)


pressure drop daTa



Model Hz


(Unit Unloaded)







kpa

290CDS 60 203.7 1.0 12.9 46.3 3.0 377.2 3.6 23.8 85.7 10.9 679.0 10.2 42.8 154.2 30.4

1171.2 26.6 73.9 266.0 79.6

310CDS 60 216.3 1.2 13.6 49.1 3.5 400.5 3.9 25.3 91.0 11.7 721.0 11.2 45.5 163.7 33.5

314CDH 50 225.5 1.3 14.2 51.2 4.0 417.6 4.2 26.3 94.9 12.5 751.7 12.0 47.4 170.7 35.9

314CDS 50 226.2 1.3 14.3 51.4 4.0 419.0 4.2 26.4 95.2 12.5 754.2 12.0 47.6 171.3 35.9

334CDS 50 242.5 1.6 15.3 55.1 4.7 449.1 5.0 28.3 102.0 14.8 808.4 13.8 51.0 183.6 41.3


0

10

20

30

0 200 400 600 800 1000 1200 1400

PD(ft)

Flow Rate (gpm)


pressure drop daTa



Model Hz


(Unit Unloaded)







kpa

330CDH 60 235.7 1.8 14.9 53.5 5.5 436.4 5.2 27.5 99.1 15.6 785.5 14.9 49.6 178.4 44.5

1171.2 30.5 73.9 266.0 91.3

350CDS 60 245.2 2.0 15.5 55.7 5.9 454.1 5.7 28.7 103.1 17.2 817.4 15.9 51.6 185.7 47.6

344CDH 50 249.1 2.0 15.7 56.6 6.0 461.3 5.7 29.1 104.8 17.2 830.4 16.4 52.4 188.6 49.1

350CDH 60 250.6 2.0 15.8 56.9 6.1 464.1 6.0 29.3 105.4 17.9 835.4 16.7 52.7 189.7 49.9

375CDS 60 260.2 2.2 16.4 59.1 6.5 481.9 6.3 30.4 109.4 18.7 867.4 17.7 54.7 197.0 53.0

374CDH 50 270.6 2.3 17.1 61.5 6.9 501.1 6.8 31.6 113.8 20.3 902.0 19.0 56.9 204.9 56.9

390CDH 60 272.7 2.3 17.2 61.9 6.9 504.9 6.8 31.9 114.7 20.3 908.9 19.3 57.3 206.4 57.7

410CDH 60 295.1 2.6 18.6 67.0 7.8 546.4 7.8 34.5 124.1 23.4 983.5 22.2 62.1 223.4 66.3

330CDH VFD 60 234.9 1.8 14.8 53.4 5.4 435.1 5.2 27.4 98.8 15.6 783.1 14.9 49.4 177.9 44.5

350CDH VFD 60 249.9 1.9 15.8 56.8 5.7 462.8 5.8 29.2 105.1 17.2 833.0 16.4 52.6 189.2 49.1

390CDH VFD 60 272.0 2.1 17.2 61.8 6.2 503.7 6.8 31.8 114.4 20.3 906.7 19.3 57.2 205.9 57.7

410CDH VFD 60 294.3 2.3 18.6 66.8 6.7 544.9 7.8 34.4 123.8 23.4 980.9 22.2 61.9 222.8 66.3


0

10

20

30

40

0 200 400 600 800 1000 1200 1400

PD(ft)

Flow Rate (gpm)


pressure drop daTa



Model Hz


(Unit Unloaded)


(Unit 100% Load) Nominal (100% Loaded) Maximum

GPMDP ft . l/s m3/h

DP kpa GPM

DP ft . l/s m3/h

DP kpa GPM

DP ft . l/s m3/h

DP kpa GPM

DP ft . l/s m3/h

DP kpa

374CTS 50 267.0 1.6 16.8 60.6 4.7 494.4 5.2 31.2 112.3 15.4 889.9 14.9 56.1 202.1 44.6

1329.7 30.3 83.9 302.0 90.7

394CTS 50 280.9 1.8 17.7 63.8 5.4 520.1 5.7 32.8 118.1 17.0 936.3 16.3 59.1 212.6 48.6

400CTS 60 286.8 1.9 18.1 65.1 5.6 531.1 6.0 33.5 120.6 17.8 955.9 16.8 60.3 217.1 50.2

404CTH 50 292.0 2.0 18.4 66.3 5.9 540.8 6.2 34.1 122.8 18.6 973.4 17.3 61.4 221.1 51.8

414CTS 50 298.8 2.1 18.9 67.9 6.2 553.3 6.5 34.9 125.7 19.4 996.0 18.2 62.8 226.2 54.3

425CTS 60 301.5 2.1 19.0 68.5 6.4 558.3 6.5 35.2 126.8 19.4 1004.9 18.4 63.4 228.2 55.1

434CTH 50 310.9 2.3 19.6 70.6 6.8 575.8 7.1 36.3 130.8 21.1 1036.4 19.2 65.4 235.4 57.5

434CTS 50 312.8 2.3 19.7 71.1 6.9 579.3 7.1 36.5 131.6 21.1 1042.8 19.5 65.8 236.8 58.3

450CTS 60 317.8 2.4 20.1 72.2 7.2 588.5 7.3 37.1 133.7 21.9 1059.4 20.3 66.8 240.6 60.8

450CTH 60 321.3 2.5 20.3 73.0 7.4 595.1 7.3 37.5 135.2 21.9 1071.1 20.6 67.6 243.3 61.6

454CTH 50 328.6 2.6 20.7 74.6 7.7 608.5 7.6 38.4 138.2 22.7 1095.4 21.4 69.1 248.8 64.0

464CTS 50 333.4 2.7 21.0 75.7 8.0 617.4 7.9 38.9 140.2 23.5 1111.2 21.9 70.1 252.4 65.6

494CTS 50 354.0 3.0 22.3 80.4 9.0 655.5 8.7 41.4 148.9 25.9 1179.9 24.4 74.4 268.0 72.9

450CTH VFD 60 320.5 2.4 20.2 72.8 7.2 593.6 7.3 37.5 134.8 21.9 1068.5 20.6 67.4 242.7 61.6


0

10

20

30

40

0 200 400 600 800 1000 1200 1400

PD(ft)

Flow Rate (gpm)



pressure drop daTa


Model Hz


(Unit Unloaded)







kpa

470CTS 60 330.6 1.2 20.9 75.1 3.6 612.3 3.9 38.6 139.1 11.7 1102.1 11.0 69.5 250.3 32.9

1775.7 25.4 112.0 403.3 75.9

475CTH 60 338.6 1.3 21.4 76.9 3.8 627.1 4.1 39.6 142.4 12.4 1128.7 11.5 71.2 256.4 34.3

484CTH 50 345.7 1.3 21.8 78.5 4.0 640.1 4.1 40.4 145.4 12.4 1152.2 11.7 72.7 261.7 35.0

500CTS 60 351.6 1.4 22.2 79.9 4.1 651.1 4.4 41.1 147.9 13.1 1171.9 12.2 73.9 266.2 36.5

500CTH 60 359.6 1.5 22.7 81.7 4.4 665.9 4.4 42.0 151.2 13.1 1198.6 12.7 75.6 272.2 38.0

504CTH 50 364.2 1.5 23.0 82.7 4.5 674.4 4.7 42.5 153.2 13.9 1213.8 12.9 76.6 275.7 38.7

514CTS 50 371.2 1.6 23.4 84.3 4.7 687.5 4.7 43.4 156.1 13.9 1237.5 13.4 78.1 281.1 40.2

525CTS 60 372.7 1.6 23.5 84.7 4.7 690.3 4.9 43.5 156.8 14.6 1242.5 13.4 78.4 282.2 40.2

530CTH 60 380.4 1.6 24.0 86.4 4.9 704.4 4.9 44.4 160.0 14.6 1267.9 13.9 80.0 288.0 41.6

524CTS 50 381.9 1.7 24.1 86.7 5.0 707.2 4.9 44.6 160.6 14.6 1273.0 13.9 80.3 289.1 41.6

534CTH 50 382.8 1.7 24.1 86.9 5.0 708.8 4.9 44.7 161.0 14.6 1275.9 14.2 80.5 289.8 42.3

544CTS 50 392.6 1.8 24.8 89.2 5.2 727.1 5.1 45.9 165.1 15.3 1308.8 14.7 82.6 297.3 43.8

550CTS 60 394.1 1.8 24.9 89.5 5.3 729.7 5.4 46.0 165.7 16.1 1313.5 14.9 82.9 298.3 44.5

554CTH 50 401.5 1.8 25.3 91.2 5.5 743.4 5.4 46.9 168.9 16.1 1338.2 15.4 84.4 303.9 46.0

554CTS 50 403.3 1.9 25.4 91.6 5.5 746.9 5.6 47.1 169.6 16.8 1344.3 15.4 84.8 305.3 46.0

574CTH 50 413.4 1.9 26.1 93.9 5.8 765.5 5.9 48.3 173.9 17.5 1377.9 16.1 86.9 313.0 48.2

584CTH 50 425.3 2.0 26.8 96.6 6.1 787.7 6.1 49.7 178.9 18.3 1417.8 16.9 89.4 322.0 50.4

604CTH 50 437.3 2.2 27.6 99.3 6.4 809.9 6.4 51.1 183.9 19.0 1457.7 17.8 92.0 331.1 53.3

475CTH VFD 60 336.7 1.2 21.2 76.5 3.6 623.6 3.9 39.3 141.6 11.7 1122.5 11.2 70.8 254.9 33.6

500CTH VFD 60 358.4 1.3 22.6 81.4 3.8 663.7 4.4 41.9 150.8 13.1 1194.7 12.7 75.4 271.4 38.0

530CTH VFD 60 377.6 1.3 23.8 85.8 4.0 699.3 4.9 44.1 158.8 14.6 1258.8 13.9 79.4 285.9 41.6


0

10

20

30

0 500 1000 1500 2000

PD(ft)

Flow Rate (gpm)


pressure drop daTa



Model Hz


(Unit Unloaded)







kpa

194CDP 50 136.8 1.2 8.6 31.1 3.4 253.3 4.6 16.0 57.5 13.8 455.9 12.9 28.8 103.5 38.7

834.8 38.3 52.7 189.6 114.4

214CDP 50 154.9 1.7 9.8 35.2 5.0 286.8 5.8 18.1 65.1 17.2 516.2 16.1 32.6 117.3 48.2

240CDP 60 167.6 2.0 10.6 38.1 6.1 310.4 6.6 19.6 70.5 19.8 558.7 18.7 35.2 126.9 55.9

265CDP 60 184.6 2.5 11.6 41.9 7.5 341.9 8.1 21.6 77.6 24.1 615.4 22.1 38.8 139.8 66.2

240CDP VFD 60 167.6 2.0 10.6 38.1 5.8 310.4 6.6 19.6 70.5 19.8 558.7 18.7 35.2 126.9 55.9

265CDP VFD 60 184.6 2.2 11.6 41.9 6.4 341.9 8.1 21.6 77.6 24.1 615.4 22.1 38.8 139.8 66.2


0

10

20

30

40

50

0 100 200 300 400 500 600 700 800 900

PD(ft)

Flow Rate (gpm)



pressure drop daTa


Model Hz


(Unit Unloaded)







kpa

244CDP 50 173.8 1.4 11.0 39.5 4.0 321.8 5.1 20.3 73.1 15.3 579.3 14.5 36.5 131.6 43.2

1042.6 40.6 65.8 236.8 121.5

264CDP 50 190.8 1.8 12.0 43.3 5.4 353.4 6.0 22.3 80.3 18.0 636.1 16.9 40.1 144.5 50.4

290CDP 60 199.8 2.0 12.6 45.4 6.1 370.0 6.6 23.3 84.0 19.8 666.0 18.4 42.0 151.3 54.9

284CDP 50 206.7 2.2 13.0 46.9 6.6 382.7 6.9 24.1 86.9 20.7 688.8 19.6 43.5 156.5 58.5

310CDP 60 218.8 2.5 13.8 49.7 7.5 405.2 7.8 25.6 92.0 23.4 729.4 21.7 46.0 165.7 64.8

314CDP 50 226.7 2.7 14.3 51.5 8.2 419.9 8.1 26.5 95.4 24.3 755.8 22.9 47.7 171.7 68.4

290CDP VFD 60 199.8 2.0 12.6 45.4 6.1 370.0 6.6 23.3 84.0 19.8 666.0 18.4 42.0 151.3 54.9

310CDP VFD 60 218.8 2.2 13.8 49.7 6.7 405.2 7.8 25.6 92.0 23.4 729.4 21.7 46.0 165.7 64.8


0

10

20

30

40

50

0 200 400 600 800 1000 1200

PD(ft)

Flow Rate (gpm)


pressure drop daTa



Model Hz


(Unit Unloaded)







kpa

330CDP 60 233.9 0.9 14.8 53.1 2.8 433.2 3.1 27.3 98.4 9.4 779.8 9.2 49.2 177.1 27.4

1585.0 31.8 100.0 360.0 95.0

344CDP 50 245.3 1.1 15.5 55.7 3.2 454.2 3.4 28.7 103.2 10.1 817.6 9.9 51.6 185.7 29.5

365CDP 60 255.6 1.2 16.1 58.1 3.5 473.3 3.8 29.9 107.5 11.5 852.0 10.6 53.8 193.5 31.7

374CDP 50 266.5 1.3 16.8 60.5 3.8 493.4 4.1 31.1 112.1 12.2 888.2 11.3 56.0 201.7 33.8

400CDP 60 277.5 1.4 17.5 63.0 4.1 513.9 4.3 32.4 116.7 13.0 925.0 12.3 58.4 210.1 36.7

404CDP 50 287.7 1.5 18.2 65.3 4.5 532.8 4.6 33.6 121.0 13.7 959.1 13.0 60.5 217.8 38.9

424CDP 50 301.7 1.6 19.0 68.5 4.9 558.7 5.1 35.2 126.9 15.1 1005.6 14.2 63.4 228.4 42.5

434CDP 50 315.7 1.8 19.9 71.7 5.3 584.5 5.6 36.9 132.8 16.6 1052.2 15.4 66.4 239.0 46.1

330CDP VFD 60 233.9 0.9 14.8 53.1 2.7 433.2 3.1 27.3 98.4 9.4 779.8 9.2 49.2 177.1 27.4

365CDP VFD 60 255.6 1.0 16.1 58.1 2.9 473.3 3.8 29.9 107.5 11.5 852.0 10.6 53.8 193.5 31.7

400CDP VFD 60 277.5 1.1 17.5 63.0 3.2 513.9 4.3 32.4 116.7 13.0 925.0 12.3 58.4 210.1 36.7


0

10

20

30

40

0 200 400 600 800 1000 1200 1400 1600 1800

PD(ft)

Flow Rate (gpm)



ConTroller operaTIon


Software Version:The unit software and BSP (Board Support Package) versions can be viewed using the keypad/display. From the Main Menu, turn the knob to the right until you reach the About Chiller menu and press Enter (the knob). The software version is displayed as “App Version =”. Scroll down in this menu (turn knob to the right), the BSP version will also be displayed (“BSP Version=”).

This manual covers software revisions up to App Version 263214202. It must be used with firmware version 9.XX..

WARNINGElectric shock hazard: can cause personal injury or equipment damage. This equipment must be properly grounded. Connections to, and service of, the MicroTech® III control panel must be performed only by personnel who are knowledgeable in the operation of this equipment .

CAUTIONStatic sensitive components. A static discharge while handling electronic circuit boards can cause damage to the components. Discharge any static electrical charge by touching the bare metal inside the control panel before performing any service work. Never unplug any cables, circuit board terminal blocks, or power plugs while power is applied to the panel.

NOTICEThis equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with this instruction manual, can cause interference to radio communications. Operation of this equipment in a residential area can cause harmful interference, in which case the user will be required to correct the interference at the user’s own expense. Daikin disclaims any liability resulting from any interference or for the correction thereof.

Controller Features• Readout of the following temperature and pressure

readings: — Entering and leaving chilled water temperature — Saturated evaporator refrigerant temperature and pressure

— Saturated condenser temperature and pressure — Outside air temperature — Suction and discharge line temperatures with calculated superheat for discharge and suction lines

— Oil pressure• Automatic control of primary and standby chilled water

pumps. The control will start one of the pumps (based on lowest run-hours) when the unit is enabled to run (not necessarily running on a call for cooling) and when the water temperature reaches a point of freeze possibility.

• Two levels of security protection against unauthorized changing of set points and other control parameters.

• Warning and fault diagnostics to inform operators of warning and fault conditions in plain language. All events and alarms are time and date-stamped for identification of when the fault condition occurred.

• Twenty-five previous alarms are available. • Remote input signals for chilled water reset, demand

limiting, and unit enable.• Test mode allows the service technician to manually

control the controllers’ outputs and can be useful for system checkout.

• Building Automation System (BAS) communication capability via LonTalk®, Modbus®, or BACnet® standard protocols for all BAS manufacturers-simplified with the Daikin Open Choices™ feature.

• Pressure transducers for direct reading of system pressures. Preemptive control of low evaporator pressure conditions and high discharge temperature and pressure to take corrective action prior to a fault trip.

General DescriptionThe MicroTech® III control system consists of a controller and a number of extension modules, which vary depending on the unit size and conformation. The control system provides the monitoring and functions required for the controlled, efficient operation of the chiller.

The control panel is located on the front of the unit at the compressor end. There are three doors. The control panel is behind to left-hand door. The power panels are behind the middle and right-hand doors.

The operator can monitor all critical operating conditions by using the screen located on the main controller. In addition to providing all normal operating controls, the MicroTech® III control system will take corrective action if the chiller is operating outside of its normal design conditions. If a fault condition develops, the controller will shut a compressor, or the entire unit, down and activate an alarm output.

The system is password protected and only allows access by authorized personnel. Except that some basic information is viewable and alarms can be cleared without a password. No settings can be changed.

Additional information about the Daikin Pathfinder® Chiller is available in the current product catalog, which can be found on www.DaikinApplied.com. NOTE: The Emergency Switch Relay de-energizes all

circuit’s control power when activated, causing an immediate compressor and fan shutdown. The red emergency button switch is located on the front of the control panel door.The control power transformer is located in the power panel adjacent to the control panel.Additional extension (aka expansion) modules are located elsewhere on the chiller.See the VFD section for a description of the panel used with the VFD option.



Figure 70: Control Panel Components, Three-Circuit Unit, w/o VFD

NOTES:1. The Emergency Switch Relay de-energizes circuit #1 and #2 control power when activated,

causing an immediate compressor and fan shut down. When ordered, the optional red emergency button switch is located on the bottom front of the control panel door.

2. The control power transformer is located in the power panel adjacent to the control panel. 3. Additional extension (aka extension) modules are located elsewhere on the chiller.

Alarm & Limit ExtensionModule

MicroTech III MainController

Optional115VOutlet

Cir #1 & #2 Fan Control ExtensionModule

ControllerFuse

Emergency SwitchRelay

ControlCircuit

Breaker

Unit On/Off Switch

Circuit #1 Pumpdown

Switch

Circuit #2 Pumpdown

Switch



Figure 71: Power Panel, Two-Circuit Units without VFD, Left Side

Figure 72: Power Panel, Two-Circuit Units without VFD, Right Side

OM 998 7

Power Panel Layout The power panel is at the front of the unit, behind the two doors to the right.

Figure 2, Power Panel, Left Side

Figure 3, Power Panel, Right Side

Fan Contactors, 1 per Fan Circuit #1

Cir# 1, Fan Circuit Breaker

Fan Contactors 1 per Fan, Circuit #2

Phase/Voltage Monitor

120/24VTransformer

Line/120V Transformer

Single Point Disconnect Switch

Compressor #1 Circuit Breaker


OM 998 7

Power Panel Layout The power panel is at the front of the unit, behind the two doors to the right.

Figure 2, Power Panel, Left Side

Figure 3, Power Panel, Right Side

Fan Contactors, 1 per Fan Circuit #1

Cir# 1, Fan Circuit Breaker

Fan Contactors 1 per Fan, Circuit #2

Phase/Voltage Monitor

120/24VTransformer

Line/120V Transformer

Single Point Disconnect Switch





Hardware StructureThe MicroTech® III control system for Pathfinder® chillers consists of a main unit controller with a number of extension input/output (I/O) modules attached depending on the chiller size and configuration.

One of the optional BAS communication modules will be included if ordered.

An optional Remote Operator Interface panel may be included, connected with up to nine Pathfinder® units.

The MicroTech® III controllers used on Pathfinder® chillers are not interchangeable with previous MicroTech® II controllers.

Figure 73: Main Unit Controller with Optional Control Options



System ArchitectureThe overall controls architecture uses the following:

• One MicroTech® III unit controller• I/O extension modules (sometimes referred to as “controllers”) as needed depending on the configuration of the unit• Up to three BAS interface modules as needed based on installed options

Figure 74: System Architecture

BAS Interface(Bacnet, Lon,

Modbus)

I/O ExtensionCompressor 1



EXV 1I/O Extension

EXV 2I/O Extension

EXV 3I/O Extension

I/O ExtensionFans Circuit 1 & 2

I/O ExtensionFans Circuit 3a

I/O ExtensionFans Circuit 3b

I/O ExtensionAlarm/Limiting

BAS Interface

Modbus)(Bacnet, Lon,

Peripheral Bus

I/O ExtensionRapidRestore®

BAS Interface(Bacnet, Lon,

Modbus)MicroTech® III Main Controller



MicroTech® III Inputs/OutputsI/O for the unit control and for circuits one and two are found on CP1. The chiller may be equipped with two or three compressors.

Table 38: Analog Inputs - Evaporator

# Description Signal Source Expected Range

AI1 Evap Entering Water Temp

NTC Thermister (10K@25°C)

-50°C – 120°C

AI2 Evap Leaving Water Temp


-50°C – 120°C

X2 Outside Ambient Temperature


-50°C – 120°C

X4 LWT Reset 4-20 mA Current 1 to 23 mA

Table 39: Analog Outputs - Fan VFD

# Description Output Signal RangeX5 Fan VFD #1 0-10VDC 0 to 100% (1000

steps resolution)

X6 Fan VFD #2 0-10VDC 0 to 100% (1000 steps resolution)

X7 Fan VFD #3 0-10VDC 0 to 100% (1000 steps resolution)

Table 40: Digital Inputs# Description Signal Off Signal OnDI1 Unit PVM Fault No Fault

DI2 Evaporator Flow Switch No Flow Flow

DI3 Double Set Point/ Mode Switch

Cool mode Ice mode

DI4 Remote Switch Unit disable Unit enable

DI5 Unit Switch Unit disable Unit enable

DI6 Emergency Stop Unit off Unit enable

Table 41: Digital Outputs

# Description Output OFF Output ONDO1 Evaporator Water Pump Pump Off Pump On

DO2 Unit Alarm Alarm not Active

Alarm Active

DO3 Circuit #1 Fan Output #1 Fan Off Fan On








Expansion I/O Compressor #1 to #3

Table 42: Analog Inputs

# Description Signal Source Expected RangeX1 Discharge

TemperatureNTC Thermister (10K@25°C)

-50°C – 125°C

X2 Evaporator Pressure

Ratiometric 0.5-4.5 Vdc

-100 kPa to 700 kPa

X3 Oil Pressure Ratiometric 0.5-4.5 Vdc

0 kPa to 3000 kPa

X4 Condenser Pressure

Ratiometric 0.5-4.5 Vdc

0 kPa to 3000 kPa

Table 43: Digital Inputs

# Description Signal Off Signal OnX6 Starter Fault Fault No fault

X7 Motor Protection Fault No fault

DI1 High Pressure Switch Fault No fault


# Description Output Off Output OnDO1 Start Compressor Compressor Off Compressor

On

DO2 Economizer Solenoid Closed Solenoid Open

DO3 Non-modulating Slide Load

Solenoid Closed Solenoid Open

DO4 Non-modulating Slide Unload


DO5 Modulating Slide Load Solenoid Closed Solenoid Open

DO6 Modulating Slide Unload


X5 Modulating Slide ‘Turbo’


X8 Liquid Injection Solenoid Closed Solenoid Open

I/O EXV Circuit #1 to #3


# Description Signal Source Expected RangeX2 Suction

TemperatureNTC Thermister 10K@25°C)

-50°C – 120°C

X3 Slide Position LVDT 4 to 20 mA 0% to 100%


# Description Signal Off Signal OnDI1 Low Pressure switch Fault No fault


# Description Output Off Output OnDO1 Liquid Line Solenoid Closed Solenoid Open



Table 48: Stepper Motor Output

# DescriptionM1+

EXV Stepper Coil 1M1-

M2+EXV Stepper Coil 2

M2-

Extension I/O Fan Module Circuit #1 & 2


# Description Output Off Output OnDI1 PVM/GFP Circuit #1 Fault No fault

DI2 PVM/GFP Circuit #2 Fault No fault


# Description Output Off Output OnDO1 Circuit #1 Fan Step #5 Fan Off Fan On

DO2 Circuit #1 Fan Step #6 Fan Off Fan On



Extension I/O Fan Module Circuit #3a


# Description Output Off Output OnDI1 PVM/GFP Circuit #3 Fault No fault






Extension I/O Fan Module Circuit #3b




Extension I/O Unit Alarm & Limiting ModuleThis module includes inputs and outputs used for the entire unit and all circuits.


# Description Signal Source RangeX3 Demand Limit 4-20 mA 1 to 23 mA

X4 Unit Current 4-20 mA 1 to 23 mA


# Description Signal Off Signal OnX1 External Alarm/

EventExternal Device Failure

External Device OK

X2 Current Limit Enable

No Limiting Limiting

X5 Circuit Switch #1 Circuit Off Circuit On




# Description Output Off Output OnDO1 Evaporator Water Pump #2 Pump Off Pump On

DO3 Circuit #1 Alarm No Alarm Alarm



Extension I/O RapidRestore® Module


# Description Signal Off Signal OnDI1 RapidRestore

UnlockLock Out Option Unlock Option

DI2 Backup Chiller Normal Chiller Backup Chiller



Set PointsThe following parameters are remembered during power off (permanent memory), are factory set to the Default value, and can be adjusted to any value in the Range column. Read and write access to these set point is determined by the Global HMI (Human Machine Interface) Standard Specification.

Unit Level Set PointsAll of these settings require the unit switch to be off in order to make a change and require rebooting the controller in orer to apply a change. The set point Slide Position Sensors will not be visible when Starter Type is set to VFD. The set point Input Voltage will not be visible unless starter Type is set to VFD.

Table 58: Set Point Default and Range

Description Default RangeBasic Unit Configuration

Starter Type Wye-Delta Wye-Delta, Benshaw-Schneider (Solid State), VFD

Input Voltage Not Set Not Set, 230, 380, 400, 460, 575

Power Connection Configuration Single Point Single Point, Multi Point

Liquid Line Solenoid Valves No No, Yes

PVM/GFP Enable Yes No, Yes

Condenser Fan VFD Enable Disable, Enable

Slide Position Sensors Yes No, Yes

Unit Mode and Enabling

Unit Enable Enable Disable, Enable

Unit Enable Initial Value Enable Disable, Enable

Control source Local Local, Network

Available Modes Cool Cool, Cool w/Glycol, Cool/Ice w/Glycol, Ice, Test

Staging and Capacity Control

Cool LWT 1 7.0°C (44.6°F) See Dynamic Set Point Ranges section

Cool LWT 2 7.0°C (44.6°F) See Dynamic Set Point Ranges section

Ice LWT -4.0°C (24.8°F) -8.0°C to 4.0°C (17.6°F to 39.2°F)

Startup Delta T 2.7 °C (4.9 °F) 0 to 5.0 °C (0 to 9.0 °F)

Shut Down Delta T 0.7 °C (1.3 °F) 0 to 1.7 °C (0 to 3.1 °F)

Stage Up Delta T 0.5 °C (0.9 °F) 0 to 1.7 °C (0 to 3.1 °F)

Stage Down Delta T 0.5 °C (0.9 °F) 0 to 1.7 °C (0 to 3.1 °F)

Stage Down Delay 5 min 0 to 60 min

Stage Down Clear 3 min 3 to 30 min

Max Pulldown Rate 1.7 deg C/min (3.1 deg F/min) 0.3 to 2.7 deg C/min (0.5 to 4.9 deg F/min)

Full Capacity Evap Delta T 2 Cir 5.6 deg C (10.1 deg F) 3.3 to 8.9 deg C (5.9 to 16.0 deg F)

Full Capacity Evap Delta T 3 Cir 5.6 deg C (10.1 deg F) 3.3 to 10 deg C (5.9 to 18.0 deg F)

Variable Evap Flow No No, Yes

Light Load Stage Down 40% 20 to 50%

High Load Stage Up 80% 50 to 100%

Max Number of Circuits Running 3 1-3

Sequence Number Circuit 1-3 1 1-3

Ice Time Delay 12 1-23 hours

Clear Ice Delay No No, Yes

RapidRestore Disable Disable, Enable

RapidRestore Max Power Off Time 15 Seconds 15 to 180 seconds



Table 59: Set Point Default and Range (continued)Description Default RangeEvaporator Pump Control

Evap Pump Control Configuration #1 Only #1 Only, #2 Only, Auto, #1 Primary, #2 Primary

Evap Recirc Timer 90 sec 0 to 300 seconds

Evap Pump 1 Run Hours 0 0 to 999999 hours

Evap Pump 2 Run Hours 0 0 to 999999 hours

Power Conservation and Limits

LWT Reset Type None None, 4-20mA, OAT

Max Reset 5.0 deg C (9.0 deg F) 0 to 10.0 deg C (0 to 18.0 deg F)

Start Reset Delta T 5.0 deg C (9.0 deg F) 0 to 10.0 deg C (0 to 18.0 deg F)

Max Reset OAT 15.5°C (59.9°F) 10.0°C to 29.4°C (50°F to 85.0 °F)

Start Reset OAT 23.8°C (74.8°F) 10.0°C to 29.4°C (50°F to 85.0 °F)

Soft Load Enable Off Off, On

Soft Load Start Capacity 40% 20-100%

Soft Load Ramp 20 min 1-60 minutes

Demand Limit Enable Off Off, On

Current @ 20mA 800 A 0 to 2000 A

Current Limit Set point 800 A 0 to 2000 A

Amp Rating Reduced Reduced, Standard

Quiet Mode Configuration

Quiet Mode Disabled Disabled, Enabled

Quiet Mode Start Hour 21:00 18:00 – 23:00

Quiet Mode Start Minute 0:00 0:00 – 0:59

Quiet Mode End Hour 6:00 5:00 – 9:00

Quiet Mode End Minute 0:00 0:00 – 0:59

Quiet Mode Condenser Offset 5.0 deg C (9.0 deg F) 0 to 14.0 deg C (0 to 25.2 deg F)

Unit Sensor Offsets

Evap LWT Sensor Offset 0 deg C (0 deg F) -5.0 to 5.0 deg C (-9.0 to 9.0 deg F)

Evap EWT Sensor Offset 0 deg C (0 deg F) -5.0 to 5.0 deg C (-9.0 to 9.0 deg F)

OAT Sensor Offset 0 deg C (0 deg F) -5.0 to 5.0 deg C (-9.0 to 9.0 deg F)

Circuit Configuration - Applied to All Circuits

Pumpdown Pressure 100 kPa (14.5 psi) 70 to 280 kPa (10.2 to 40.6 psi)

Pumpdown Time Limit 120 sec 0 to 180 sec

Liquid Injection Activation 85.0°C (185.0°F) 80.0°C to 100.0°C (176.0°C to 212.0°F)

Start-Start Time Delay 20 min 15-60 minutes

Stop-Start Time Delay 5 min 3-20 minutes

Compressor VFD Max Frequency - without economizer

52 Hz 40 to 52 Hz

Compressor VFD Max Frequency - with economizer

60 Hz 40 to 60 Hz

Compressor VFD Modbus Baud Rate 19200 4800, 9600, 19200, 38400

Compressor VFD Modbus Parity None Even, Odd, None

Compressor VFD Modbus Two Stop Bits No No, Yes

Compressor Starter Modbus Baud Rate 19200 4800, 9600, 19200

Compressor Starter Modbus Parity Even Even, Odd, None

Compressor Starter Modbus Two Stop Bits No No, Yes



Table 60: Set Point Default and Range (continued)

Description Default RangeAlarm and Limit Settings - Unit

Evap. Water Freeze 2.2°C (36.0°F) See Dynamic Set Point Ranges section

Evaporator Flow Proof 15 sec 5 to 15 sec

Recirculate Timeout 3 min 1 to 10 min

External Fault Configuration Event Event, Alarm

Low OAT Lockout 12.0°C (53.6°F) See Dynamic Set Point Ranges section

Low OAT Lockout BAS Alert Off Off, On

Alarm and Limit Settings - Circuits

Low Pressure-Unload 160 kPa (23.2 psi) See Dynamic Set Point Ranges section

Low Pressure-Hold 180 kPa (26.1 psi) See Dynamic Set Point Ranges section

High Oil Press Differential Delay 30 sec 10-180 sec

High Oil Press Differential 250 kPa (36.3 psi) 0 to 415 kPa (0 to 60.2 psi)

High Discharge Temperature 110.0°C (230.0°F) 65.0 to 110.0 °C (149.0 to 230.0°F)

Low discharge superheat 12°C (21.6°F) 10.0-15.0°C (18-27°F)

High Cond Pressure Delay 5 sec 0 to 30 sec

Low Pressure Ratio Delay 90 sec 0 to 180 sec

Start Time Limit 60 sec 20 to 180 sec

Low DSH Limit 12.0°C (53.6°F) 10°C to 15.0°C (50°F to 59.0°F)

Dynamic Set Point Ranges The following settings have different ranges of adjustment based on other settings.

Table 61: Cool LWT 1 and Cool LWT2 Set Point Ranges Available Mode Selection Unit Vintage/Amp Rating RangeWithout Glycol C vintage/reduced amp rating 4 to 15.56°C (39.2 to 60°F)

With Glycol C vintage/reduced amp rating -4 to 15.56°C (24.8 to 60°F)

Without Glycol C vintage/standard amp rating 4 to 21.12°C (39.2 to 70°F)

With Glycol C vintage/standard amp rating -4 to 15.56°C (24.8 to 70°F)

Table 62: Evaporator Water Freeze Available Mode Selection RangeWithout Glycol 1.1 to 6°C (34 to 42.8°F)

With Glycol -18 to 6°C (-0.4 to 42.8°F)

Table 63: Low Ambient Lockout Fan VFD Range

= no for all circuits 2 to 15°C (35.6 to 59°F)

= yes on any circuit -23 to 15°C (-9.4 to 59°F)

Table 64: Low Evaporator Pressure Available Mode Selection RangeHold - Without Glycol 170 to 310 kPa (24.7 to 45 PSI)

Hold - With Glycol 0 to 310 kPA (0 to 45 PSI)

Unhold - Without Glycol 150 to 310 kPa (21.8 to 45 PSI)

Unhold - With Glycol 0 to 310 kPA (0 to 45 PSI)



Table 65: Design Conditions

Description Default RangeDesign Evaporator EWT 0°C (32°F) -64°C to 64°C (-83.2°F to 147.2°F)

Design Evaporator LWT 0°C (32°F) -64°C to 64°C (-83.2°F to 147.2°F)

Design Evaporator Water Flow 0 lph 0 to 600000 lph

Design Evaporator Approach Circuit 1/2/3 0°C (32°F) -64°C to 64°C (-115.2°F to 115.2°F)

Design Ambient Temperature 0°C (32°F) -64°C to 64°C (-115.2°F to 115.2°F)

Design Condenser Approach Circuit 1 0°C (32°F) -64°C to 64°C (-115.2°F to 115.2°F)

Design Full Load Efficiency 0% 0 to 100%

Design IPLV 0 -64 to 64

Design Rated Capacity 0 tons 0 to 10000 tons

Table 66: Administration and Service Support

Description Default RangeUnit G.O. Number “Enter Data” Alphanumeric string of up to 16 characters

Unit Serial Number “Enter Data” Alphanumeric string of up to 20 characters

Next Maintenance Month January January through December

Next Maintenance Year 2009 2009 - 2100

Service Support Reference 999-999-9999 Any 10 digit phone number

Controller Time From Controller Timeclock

00:00:00 to 23:59:59

Controller Date From Controller Timeclock

1/1/2000 to 12/31/2050

UTC Difference -60 minutes -3276 to 32767 minutes

Daylight Savings Time Enable Yes No, Yes

Daylight Savings Time Start Month March January through December

Daylight Savings Time Start Week 2nd Week 1st through 5th Week

Daylight Savings Time End Month November January through December

Daylight Savings Time End Week 1st Week 1st through 5th Week

Operator Password Disable Off Off, On

Apply Changes No No, Yes

Active Alarm Clear Off Off, On

Alarm Log Clear No No, Yes

Power Restore Event Log - Day Selection Current Current, 2nd Day, 3rd Day, 4th Day, 5th Day, 6th Day, 7th Day

Display Units English English, Metric

Table 67: Unit Test Mode Set Points

Description Default RangeTest Unit Alarm Output Off Off, On

Test Circuit 1 Alarm Output Off Off, On



Test Evaporator Pump Output 1 Off Off, On

Test Evaporator Pump Output 2 Off Off, On

NOTE: Unit test mode set points can be changed only when the unit mode is Test. When the unit mode is no longer Test, all unit test mode set points will be changed back to the ‘off’ values.



Table 68: Commincation Configuration

Description Default RangeController IP DHCP On Off, On

Controller IP Network Address 192.168.001.042 000.000.000.000 to 255.255.255.255

Controller IP Network Mask 255.255.255.000 000.000.000.000 to 255.255.255.255

Controller IP Network Gateway 192.168.001.001 000.000.000.000 to 255.255.255.255

Lon Module Maximum Send Time 0 seconds 0 to 6553.4 seconds

Lon Module Minimum Send Time 0 seconds 0 to 6553.4 seconds

Lon Module Receive Heartbeat 0 seconds 0 to 6553.4 seconds

BACnet Module Name Alphanumeric string up to 15 characters long

BACnet Module Dev Instance 0 0 to 4194302

BACnet Module Unit Support English Metric, English

BACnet Module NC Dev 1 0 0 to 42949672

BACnet Module NC Dev 2 0 0 to 42949672

BACnet Module Reset Out of Service Done Done, False, True

BACnet IP Module UDP Port 0 0 to 65535

BACnet IP Module DHCP Off Off, On

BACnet IP Module Network Address 000.000.000.000 to 999.999.999.999

BACnet IP Module Network Mask 000.000.000.000 to 999.999.999.999

BACnet IP Module Network Gateway 000.000.000.000 to 999.999.999.999

BACnet MSTP Module Address 0 0 to 127

BACnet MSTP Module Baud Rate 38400 9600, 19200, 38400, 76800

BACnet MSTP Module Max Master 0 0 to 127

BACnet MSTP Module Max Info Frm 0 0 to 255

Modbus Module Address 1 1 to 247

Modbus Module Baud Rate 19200 4800, 9600, 19200, 38400

Modbus Module Parity Even Even, Odd, None

Modbus Module Two Stop Bits No No, Yes

Modbus Module Response Delay 0 milliseconds 0 to 30000 milliseconds

Modbus Module Comm LED Time Out 0 seconds 0 to 3600 seconds

AWM DHCP Off Off, On

AWM Network Address 000.000.000.000 to 999.999.999.999

AWM Network Mask 000.000.000.000 to 999.999.999.999

AWM Network Gateway 000.000.000.000 to 999.999.999.999

Table 69: BAS Control Inputs

Description Default RangeNetwork Unit Enable Disable Disable, Enable

Network Mode Command Cool Cool, Ice

Network Cool Set Point 7°C (44.6°F) See Dymanic Set Point (Table 61)

Network Ice Set Point -4°C (24.8°F) -8 to 4 °C (17.6 to 39.2 °F)

Network Capacity Limit 100% 0% to 100%

Network Quite Mode Command Auto Auto, Quiet Mode On

Network Alarm ClearCommand Normal Normal, ClearAlarm



Circuit Level Set PointsThe settings in this section all exist for each individual circuit.

Table 70: Set Points for Individual CircuitsDescription Default RangeMode, Enabling, Configuration

Circuit mode Enable Disable, enable, test

Capacity Control Auto Auto, Manual

Manual Capacity See Note 1 0 to 100%

Economizer Enable Capacity (2) 40% 40 to 75%

Condenser Control

Saturated Condenser Temp Target Min 32.0°C (89.6°F) 20.0°C to 50.0°C (68.0°F to 122.0°F)

Saturated Condenser Temp Target Max 43.0°C (109.4°F) 32.0°C to 50.0°C (89.6°F to 122.0°F)

Fan Stage 0 On Deadband See Fan Staging VFD Set Points 1.0 to 10.0 °C (1.8 to 18 °F)





Fan Stage 5 to 12 On Deadband See Fan Staging VFD Set Points 1.0 to 10.0 °C (1.8 to 18 °F)

Fan Stage 1 Off Deadband See Fan Staging VFD Set Points 1.0 to 10.0 °C (1.8 to 18 °F)





Fan Stage 6 to 12 Off Deadband See Fan Staging VFD Set Points 1.0 to 10.0 °C (1.8 to 18 °F)

Fan VFD Max Speed (3) 100% 90 to 110%

Fan VFD Min Speed (3) 25% 20 to 60%

Sensor Offsets

Evap pressure Sensor offset 0 kPa (0 psi) -100 to 100 kPa (-14.5 to 14.5 psi)

Cond pressure Sensor offset 0 kPa (0 psi) -100 to 100 kPa (-14.5 to 14.5 psi)

Oil pressure Sensor Offset 0 kPa (0 psi) -100 to 100 kPa (-14.5 to 14.5 psi)

Suction temp Sensor Offset 0 °C (0 °F) -5.0 to 5.0 °C (-9.0 to 9.0 °F)

Discharge temp offset 0 °C (0 °F) -5.0 to 5.0 °C (-9.0 to 9.0 °F)

Slide position sensor mA @ minimum 4 mA 0 to 22 mA

Slide position sensor mA @ maximum 20 mA 0 to 22 mA

Administrative and Service Support

Clear Cycle Timers No No, Yes

Service Pumpdown No No, Yes

Compressor Run Hours 0 0 to 999999 hours

Compressor Starts 0 0 to 65535

Starter Model Number “Enter Data” Alphanumeric string of up to 19 charactersStarter Serial Number “Enter Data” Alphanumeric string of up to 19 charactersEvent Log - Event Selection Low Pressure Hold Low Pressure Hold, Low Pressure Unload, High Pressure

Hold, High Pressure Unload, High Motor Amps Hold, High Motor Amps Unload, Part Load Shutdown

Event Log - Day Selection Current Current, 2nd Day, 3rd Day, 4th Day, 5th Day, 6th Day, 7th Day

NOTE: 1. The manual capacity setting value will follow the target capacity while Capacity Control = Auto.2. Economizer Enable Capacity will only be visible when unit is configured with compressor VFDs.3. VFD minimum and maximum speed will only be visible if the unit is configured with condenser fan VFDs.



Circuit Test Mode Set PointsCircuit test mode set points can be changed when either the unit mode is Test, or the circuit mode is Test. When neither the unit nor the circuit are in Test mode, all the circuit test mode set points for the circuit are automatically changed back to their ‘off’ values.

Description Default RangeTest Compressor Load Solenoid 1 Output Off Off, OnTest Compressor Load Solenoid 2 Output Off Off, OnTest Compressor Unload Solenoid 1 Output Off Off, OnTest Compressor Unload Solenoid 2 Output Off Off, OnTest Compressor Slide Assist Output Off Off, OnTest Liquid Line Solenoid Output Off Off, OnTest Liquid Injection Solenoid Output Off Off, OnTest Economizer Solenoid Output Off Off, OnTest EXV Position 0% 0 to 100%Test Condenser Fan Output 1 Off Off, OnTest Condenser Fan Output 2 Off Off, OnTest Condenser Fan Output 3 Off Off, OnTest Condenser Fan Output 4 Off Off, OnTest Condenser Fan Output 5 Off Off, OnTest Condenser Fan Output 6 Off Off, OnTest Condenser Fan VFD Speed 0% 0 to 100%

Note the following regarding visibility of some of the above set points:

• Test set points for the compressor load and unload outputs will only be visible if unit is configured without compressor VFD’s.• Test set point for the Liquid Line output will only be visible if unit is configured with liquid line solenoid valves.• Test set point for the economizer output will only be visible if unit is configured with economizers.• Test set point for condenser fan VFD speed will only be visible if unit is configured with fan VFD’s.• Test set points for condenser fan outputs will be visible only if needed for the unit configuration.

Dynamic Default ValuesThe fan staging dead bands have different default values based on the VFD enable set point. When the VFD enable set point is changed, a set of default values for the fan staging dead bands is loaded as follows:

Table 71: Fan Staging VFD Set Points

Fan VFD is Enabled Fan VFD is DisabledSet point Default loaded (°F) Set point Default loaded (°F)Stage 0 Up Deadband 2.5 °C (4.5 °F) Stage 0 Up Deadband 4.0 °C (7.2 °F)

Stage 1 Up Deadband 2.5 °C (4.5 °F) Stage 1 Up Deadband 5.0 °C (9.0 °F)


Stage 3 Up Deadband 5.0 °C (9.0 °F) Stage 3 Up Deadband 6 °C (10.8 °F)



Stage 2 Down Deadband 4.0 °C (7.2 °F) Stage 2 Down Deadband 10 °C (18 °F)

Stage 3 Down Deadband 3.5 °C (6.3 °F) Stage 3 Down Deadband 8 °C (14.4 °F)

Stage 4 Down Deadband 3.0 °C (5.4 °F) Stage 4 Down Deadband 5.5 °C (9.9 °F)




sequenCe of operaTIon


Figure 75: Unit Sequence of Operation - Cool Mode

Is unit enabled?

Is �ow present?

Evaporator pump output on

Yes

Yes

No

Wait for chilled water loop torecirculate

Unit power up

No

Unit in O� state

The chiller may be disabled via the unit switch, the remote switch, the keypadenable setting, or the BAS network. In addition, the chiller will be disabled if allcircuits are disabled, or if there is a unit alarm. If the chiller is disabled, the unitstatus display will re�ect this and also show why it is disabled.

If the chiller is enabled, then the unit will be in the Auto state and the evaporator water pump output will be activated.

If the unit switch is o�, the unit status will be O�:Unit Switch. If the chiller isdisabled due to network command, the unit status will be O�:BAS Disable. Whenthe remote switch is open, the unit status will be O�:Remote Switch. When a unitalarm is active, the unit status will be O�:Unit Alarm. In cases where no circuitsare enabled, the unit status will be O�:All Cir Disabled. If the unit is disabled viathe Chiller Enable set point, the unit status will be O�:Keypad Disable.

Yes

No

Is low ambient lockoutactive?

After establishing �ow, the chiller will wait some time to allow the chilled water loop to recirculate for an accurate reading of the leaving water temperature. The unit status during this time is Auto:Evap Recirc.

The chiller will then wait for the �ow switch to close, during which time the unit status will be Auto:Wait for �ow.

Low ambient lockout will prevent the chiller from starting even if it is otherwiseenabled. When this lockout is disabling the chiller, the unit status will be O�:LowOAT Lock.



Figure 70: Unit Sequence of Operation - Cool Mode (continued)

Yes

Start �rst circuit.

Additional circuitneeded to satisfy load?

Yes

No

Has the stage up timedelay expired?

No

The �rst circuit to start is generally the available circuit with the least number ofstarts. This circuit will go through it’s start sequence at this point.

Load/unload as needed tosatisfy load.

A minimum time must pass between the starting of circuits.

The �rst circuit will be loaded and unloaded as needed in an attempt to satisfy theload by controlling LWT to the Active Setpoint.

Yes

Start next circuit.

The second circuit will go through it’s start sequence at this point.

If a single circuit is not enough to satisfy the load, additional circuits will need to bestarted. An additional circuit will be started when all running compressors areloaded to a speci�c capacity and the LWT is higher than the Active Setpoint plusthe Stage Up Delta T.

No

Is there enough load tostart chiller?

Note that a third circuit can be started if available. The two preceding conditionsmust again be satis�ed after starting the second circuit before starting the thirdcircuit.

Keep pump output on whilechiller is enabled and either

running or ready to run.

The chiller is now ready to start if enough load is present. If the LWT is not higherthan the Active Setpoint plus the Start Up Delta T, the unit status will be Auto:Waitfor load.

If the LWT is higher than the Active Setpoint plus the Start Up Delta T, the unitstatus will be Auto. A circuit can start at this time.



Figure 70: Unit Sequence of Operation - Cool Mode (continued)

No


Is load satis�ed?

Yes

Shut down last circuit. The last circuit running now shuts down.

The remaining running circuit(s) will be loaded/unloaded as needed to satisfy theload.


No

Can less circuits handlethe load?

When only one circuit is running, the load may drop o� to the point where evenminimum unit capacity is too much. The load has been satis�ed when the LWTdrops below the Active Setpoint minus the Shutdown Delta T. At this time the onlyrunning circuit can shut down.

Yes

Shut down one circuit.

As the load drops o�, the circuits will unload accordingly. If the LWT drops belowthe Active Setpoint minus the Stage Down Delta T, one circuit will shut o�. If allrunning circuits are unloaded below a minimum value, this can also result in onecircuit shutting o�.

All circuits o�.

All running circuits will now be loaded/unloaded as needed to satisfy the load.When possible, they will load balance so that running circuits are providing nearlyequal capacity.

The next circuit to shut o� is generally the one with the most run hours.

Has the stage down

Yes

time delay expired?

When last circuit has completed pumpdown, the unit will go back to waiting forenough load to start.

No

A minimum time must pass between the shutting down of circuits.



Figure 76: Unit Sequence of Operation - Ice Mode

Is unit enabled?

Is �ow present?

Yes

Yes

No

Evaporator pump output on

Unit power up

No

Unit in O� state

The chiller may be disabled via the unit switch, the remote switch, the keypadenable setting, or the BAS network. In addition, the chiller will be disabled if allcircuits are disabled, or if there is a unit alarm. If the chiller is disabled, the unitstatus display will re�ect this and also show why it is disabled.

If the chiller is enabled, then the unit will be in the Auto state and the evaporatorwater pump output will be activated.

Yes

No

Is low ambient lockoutactive?

The chiller will then wait for the �ow switch to close, during which time the unitstatus will be Auto:Wait for �ow.

If the unit switch is o�, the unit status will be O�:Unit Switch. If the chiller isdisabled due to network command, the unit status will be O�:BAS Disable. Whenthe remote switch is open, the unit status will be O�:Remote Switch. When a unitalarm is active, the unit status will be O�:Unit Alarm. In cases where no circuitsare enabled, the unit status will be O�:All Cir Disabled. If the unit is disabled viathe Chiller Enable set point, the unit status will be O�:Keypad Disable.

Yes

No

Is Ice Mode Start Delayexpired?

Wait for chilled water loop torecirculate.

Low ambient lockout will prevent the chiller from starting even if it is otherwiseenabled. When this lockout is disabling the chiller, the unit status will be O�:LowOAT Lock.

A delay is required between Ice cycles.

After establishing �ow, the chiller will wait some time to allow the chilled water loopto recirculate for an accurate reading of the leaving water temperature. The unitstatus during this time is Auto:Evap Recirc.



Figure 71: Unit Sequence of Operation - Ice Mode (continued)

Yes

Start and run �rst circuit.

Has the stage up timedelay expired?

Start and run next circuit.

A minimum time must pass between the starting of circuits.

The �rst circuit to start is generally the available circuit with the least number ofstarts. This circuit will go through it’s start sequence at this point and load up asquickly as possible.

The second circuit will go through it’s start sequence at this point and load up as quickly as possible.

Is �uid temp high

No

enough to start?

Note that a third circuit can be started if available. The stage up time delay must expire again.

Keep pump output on whilechiller is enabled and either

running or ready to run.

Yes

No

The chiller is now ready to start if enough load is present. If the LWT is not higherthan the Active Setpoint plus the Start Up Delta T, the unit status will be Auto:Waitfor load.

Is the ice cycle complete?

No

If the LWT is higher than the Active Setpoint plus the Start Up Delta T, the unitstatus will be Auto. A circuit can start at this time.

Finish loading all circuits upto full capacity and maintain

full capacity.

Begin normal shut down ofall circuits.

Yes

All circuits o�.

All circuits begin the shut down sequence simultaneously.

When all circuits have completed pumpdown, the unit will repeat the cycle.

Ice building is complete when LWT is less than the Active Setpoint.



Figure 77: Circuit Sequence of Operation

Yes

Is circuit commanded tostart?

Unit power up

No

Circuit is in O� state

Yes

No

Is circuit is enabled tostart?

When the circuit is in the O� state the EXV is in the closed position, compressor iso�, and all condenser fans are o�.

Circuit is ready to start

No

Yes

Are compressor cycletimers active?

If the compressor is ready to start when needed, the circuit status will beO�:Ready.

Yes

The circuit must be enabled before it can run. It might be disabled for severalreasons. When the circuit switch is o�, the status will be O�:Circuit Switch.If the BAS has disabled the circuit, the status will be O�:BAS Disable. If the circuithas an active stop alarm then the status will be O�:Cir Alarm. If the circuit hasbeen disabled via the circuit mode set point, the status will be O�:Cir ModeDisable. If the compressor is not ready due to refrigerant in the oil, the circuitcannot start and circuit status will be O�:Oil Heating.

A minimum time must pass between the previous start and stop of a compressorand the next start. If this time has not passed, a cycle timer will be active and thecircuit status will be O�:Cycle Timer.

Capacity control logic at the unit level will determine when a circuit needs to startand issue a start command to the next circuit to start based on sequencing rules.

Yes

No

Is circuit commanded to shut down?

Pumpdown circuit

Run circuit

Is pumpdown complete?

No

The compressor will be started and the EXV, fans, and other devices will be controlled as needed. The normal circuit status at this time will be Run:Normal. Capacity will be controlled based on load and unload commands coming from the capacity control logic at the unit level.

When the circuit is commanded to shut down, a normal shut down of the circuit will be performed. The circuit status during this time will be Run:Pumpdown.

Pumpdown is complete when the evaporator pressure drops to a certain point or the circuit has been pumping down for longer than the pumpdown time limit.

Is EXV Preopen required?

Yes

Preopen EXV

No

Capacity control logic at the unit level will determine when a circuit needs to shut down and issue a stop command to the next circuit to stop based on sequencing rules.

If conditions require the EXV to preopen, then that will occur. Some start conditions do not require this, so this step would be skipped in those conditions.


unIT funCTIons

unIT funCTIonsCalculationsEvaporator Temperature SlopeThe slope represents the change or trend in either EWT or LWT over a time frame of one minute. It is calculated by taking readings of the temperature every few seconds and subtracting them from the previous value, over a rolling one minute interval.

Evaporator Pulldown RateA pulldown rate is calculated by inverting the slope value and limiting to a minimum value of 0°C/min.

Unit CapacityThe unit capacity is the total of the circuit target capacities divided by the number of circuits.

Total Unit PowerAn estimate of the total unit power is calculated on units with compressor VFDs. An approximate power value is read from the compressor VFDs. For each circuit the number of fans running is multiplied by 1.464 and the compressor power value is added to that value. This is the estimated power for the circuit. The estimated power for all circuits is totaled to determine the total unit power. All values are in units of kW.

Unit EnableThe unit is available to start if the following conditions are true:

• Unit switch is closed• If unit mode is ice and the ice timer has timed out.• No unit alarms exist• Emergency stop input is closed• At least one circuit is enabled• Unit enable set point is Enable• If remote control is connected & remote unit switch is

closed• If Control Source = Network, BAS Enable = True

Enabling and disabling the chiller is accomplished using set points and inputs to the chiller. The unit switch, remote switch input, and Unit Enable Set Point all are required to be On/Enable for the unit to be enabled when the control source is set to Local. The same is true if the control source is set to Network, with the additional requirement that the BAS Enable set point be Enable.

Table 72: Enable Combinations

Unit Switch

Control Source

Set Point

Remote Switch Input

Unit Enable

Set Point

BAS Request

Unit State

Off x x x x Disablex x Disable x Disablex x Disable x x Disable

On Local Enable Enable x Enablex Network x x Disable Disable

On Network Enable Enable Enable Enable

NOTE: An x indicates that the value is ignored.

All of the methods for disabling the chiller, discussed in this section, will cause a normal shutdown (pumpdown) of any running circuits.

When the controller is powered up, the Unit Enable Set Point will be initialized to ‘Disable’ if the Unit Enable Initial Set Point is set to ‘Disable’. The chiller will remain disabled after powering up until the Unit Enable Set Point is set to Enable.

Unit Mode SelectionThe operating mode of the unit is determined by set points and inputs to the chiller. The Available Modes Set Point determines what modes of operation can be used. This set point also determines whether the unit is configured for glycol use. The Control Source Set Point determines where a command to change modes will come from. A digital input switches between cool mode and ice mode if they are available and the control source is set to local. The BAS mode request switches between cool mode and ice mode if they are both available and the control source is set to Network.

The Available Modes Set Point must only be changed when the unit switch is off. This is to avoid changing modes of operation inadvertently while the chiller is running.

Unit Mode is set according to the following table.

Table 73: Unit Mode CombinationsControl Source

Set PointMode Input BAS

Request

Available Modes

Set PointUnit Mode

x x x Cool Cool

x x xCool w/Glycol

Cool

Local Off xCool/Ice w/

GlycolCool

Local On xCool/Ice w/

GlycolIce

Network x CoolCool/Ice w/

GlycolCool

Network x IceCool/Ice w/

GlycolIce

x x x Ice w/Glycol Icex x x Test Test

NOTE: “x” Indicates that the value is ignored.

Glycol ConfigurationIf the Available Modes Set Point is set to an option w/Glycol, then glycol operation is enabled for the unit. Glycol operation must be disabled only when the Available Modes Set Point is set to Cool. Glycol operation opens up the ranges for several set points to be set to lower values.

unIT funCTIons


Unit Control StatesThe unit will always be in one of three states:

1. Off – Unit is not enabled to run.

2. Auto – Unit is enabled to run.

3. Pumpdown – Unit is doing a normal shutdown.

T1 - Off to Auto. All of the following are required:

• Unit Enable = On• No unit alarm is active• At least one circuit is enabled to start• If unit mode = Ice, Ice Delay is not active• Low Ambient Lockout is not active

T2 - Auto to Pumpdown. Any of the following are required:

• Unit Enable = OffIf • Unit Mode = Ice AND LWT target is reached• Unit Pumpdown Alarm is active• Low Ambient Lockout is active

T3 - Pumpdown to Off. Any of the following are required:

• Unit rapid stop alarm is active• All circuits complete pumpdown

T4 - Auto to Off. Any of the following are required:

• Unit rapid stop alarm is active• No circuits enabled and no compressors running

Unit StatusUnit Status is displayed to indicate the general condition of the unit. The following table lists the text displayed for each unit status and the conditions that enable each status. If more than one status is enabled at the same time, the highest numbered status overrides the others and is displayed.

Table 74: Unit Status Conditions

Enum Status Conditions1 Auto Unit State = Auto

2 Off: Ice Mode Timer Unit State = Off, Unit Mode = Ice, and Ice Delay = Active

3 Off: Low OAT Lockout Unit State = Off and Low OAT Lockout is active

4 Off: All Cir Disabled Unit State = Off and all compressors unavailable

5 Off: Unit Alarm Unit State = Off and Unit Alarm active

6 Off: Keypad Disable Unit State = Off and Unit Enable Set Point = Disable

7 Off: Remote Sw Unit State = Off and Remote Switch is open

8 Off: BAS Disable Unit State = Off, Control Source = Network, and BAS Enable = false

9 Off: Unit Switch Unit State = Off and Unit Switch = Disable

10 Off: Test Mode Unit State = Off and Unit Mode = Test

11 Auto: Noise Reduction Unit State = Auto and Noise Reduction is active

12 Auto: Wait for Load Unit State = Auto, no circuits running, and LWT is less than the active set point + startup delta

13 Auto: Evap Recirc Unit State = Auto and Evaporator State = Start

14 Auto: Wait for flow Unit State = Auto, Evaporator State = Start, and Flow Switch is open

15 Auto: Pumpdown Unit State = Pumpdown

16 Auto: Max Pulldown Rate Unit State = Auto, max pulldown rate has been met or exceeded

17 Auto: Unit Cap Limit Unit State = Auto, unit capacity limit has been met or exceeded

18 Auto: Current Limit Unit State = Auto, unit current limit has been met or exceeded

19 Auto: RapidRestore Unit State = Auto, unit is performing RapidRestore operation

20 Off: Invalid Config The unit configuration is not a valid combination.

21 Off: Inp Volts Not Set Input voltage for unit with compressor VFDs is not set.

22 Off: Cfg Chg, Rst Ctlr Unit configuration set point has changed, and reboot of controller is required

3

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unIT funCTIons

Ice Mode Start DelayAn adjustable start to start ice delay timer will limit the frequency with which the chiller may start in Ice mode. The timer starts when the first compressor starts while the unit is in ice mode. While this timer is active, the chiller cannot restart in Ice mode. The time delay is user adjustable. The ice delay timer may be manually cleared to force a restart in ice mode. A set point specifically for clearing the ice mode delay is available. In addition, cycling the power to the controller should clear the ice delay timer.

Low Ambient LockoutWhen the OAT drops below the low ambient lockout set point and the OAT sensor fault is not active, low ambient lockout is triggered. The unit will go into the pumpdown state if any circuits are running. If no circuits are running the unit will go directly into the off state. Once all circuits complete pumpdown, the unit will remain in the off state until the lockout has cleared.

This condition will clear when OAT rises to the lockout set point plus 2.5°C (4.5°F).

Evaporator Pump ControlThree evaporator pump control states for control of the evaporator pumps:

1. Off - No pump on.

2. Start – Pump is on, water loop is being recirculated. Recirc timer runnning

3. Run – Pump is on, water loop has been recirculated. Recirc timer has timed out

T1 - Off to Start - Requires all of the following to be true:

• Unit state = Auto • Freeze protestion started

T2 - Start to Run - Requires the following to be true:

• Flow ok for time longer than evaporator recirculate time set point

T3 - Run to Off - Requires all of the following to be true:

• Unit state = Off• Freeze protection not active

T4 - Start to Off. - Requires all of the following to be true:

• Unit state = Off• Freeze protection is not active

T5 - Run to Start. - Requires the following to be true:

• Flow switch input is low for longer than the flow proof set point

Freeze ProtectionTo protect the evaporator from freezing, the evaporator pump will start if the manual reset flow loss alarm is not active and either of the following are true:

• LWT equal to or less than the Evap Freeze set point for at least three seconds AND LWT sensor fault isn’t active

• EWT equal to or less than the Evap Freeze set point for at least three seconds AND EWT sensor fault isn’t active

Freeze protection will end when manual reset flow loss alarm is active or all of the following are true:

• LWT is at least 1.11°C (2°F) above the Evap Freeze set point or LWT sensor fault is active

• EWT is at least 1.11°C (2°F) above the Evap Freeze set point or EWT sensor fault is active

• pump has been running for at least 15 minutes

Pump SelectionThe pump output used is determined by the Evap Pump Control set point. This setting allows the following configurations:

• #1 only – Pump 1 will always be used • #2 only – Pump 2 will always be used • Auto – The primary pump is the one with the least run

hours, the other is used as a backup• #1 Primary – Pump 1 is used normally, with pump 2 as a

backup • #2 Primary – Pump 2 is used normally, with pump 1 as a

backup

Primary/Standby Pump StagingThe pump designated as primary will start first. If the evaporator state is start for a time greater than the recirculate timeout set point and there is no flow, then the primary pump will shut off and the standby pump will start. When the evaporator is in the run state, if flow is lost for more than half of the flow proof set point value, the primary pump will shut off and the standby pump will start. Once the standby pump is started, the flow loss alarm logic will apply if flow cannot be established in the evaporator start state, or if flow is lost in the evaporator run state.

Auto ControlIf auto pump control is selected, the primary/standby logic above is still used. When the evaporator is not in the run state, the run hours of the pumps will be compared. The pump with the least hours will be designated as the primary at this time.

STARTRUN

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unIT funCTIons

Leaving Water Temperature (LWT) ResetLWT TargetThe LWT Target varies based on settings and inputs and is selected as follows:

Table 75: Leaving Water Temperature TargetsControl Source

Control Source Set Point

Mode Input

BAS Request

Available Modes Set Point

Base LWT Target

LocalOFF X

COOL

Cool Set point 1

ON XCool Set point 2

Network X XBAS Cool Set point

LocalOFF X

COOL w/Glycol

Cool Set point 1

ON XCool Set point 2

Network X XBAS Cool Set point

LocalOFF x

COOL/ICE w/Glycol

Cool Set point 1

ON x Ice Set point

Networkx COOL

BAS Cool Set point

x ICEBAS Ice Set point

Local x xICE w/Glycol

Ice Set point

Network x xBAS Ice Set point

The base LWT target may be reset to a higher value if the unit is in Cool mode and it is configured for a reset. The type of reset to be used is determined by the LWT Reset Type set point.

When the active reset increases, the Active LWT Target is changed at a rate of 0.1 °C (0.18 °F) every 10 seconds. When the active reset decreases, the Active LWT Target is changed all at once.

After resets are applied, the LWT target can never exceed a value of 15.56°C (60°F) for C vintage chillers with reduced amp rating. The LWT target can go up to 21.12°C (70°F) for C vintage chillers with standard amp rating.

Reset Type – NoneThe Active LWT target is set equal to the base LWT set point.

Reset Type – Return Chilled WaterThe Active LWT target is adjusted based on the return water temperature (evaporator entering water temperature).

Figure 78: Return Reset

The active set point is reset using the following parameters:

1. Cool LWT set point

2. Max Reset set point

3. Start Reset Delta T set point

4. Evap Delta T

Reset varies from 0 to Max Reset set point as the Evaporator EWT – LWT (Evap delta t) varies from the Start Reset Delta T set-point to 0.

4-20 mA External Signal Reset The Active LWT target is adjusted by the 4 to 20 mA reset analog input.

Parameters used:

1. Cool LWT set point

2. Max Reset set point

3. LWT Reset signal

Reset is 0 if the reset signal is less than or equal to 4 mA. Reset is equal to the Max Reset Delta T set point if the reset signal equals or exceeds 20 mA. The amount of reset will vary linearly between these extremes if the reset signal is between 4 mA and 20 mA. An example of the operation of 4-20 reset in Cool mode follows.

Figure 79: 4-20mA Reset - Cool Mode


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Outside Air Temperature (OAT) Reset The Active Leaving Water variable is reset based on the outdoor ambient temperature. Parameters used:

1. Cool LWT set point2. Max Reset set point3. Start Reset OAT set point4. Max Reset OAT set point5. OAT

Reset is 0 if the outdoor ambient temperature is greater than Start Reset OAT set point. From Start Reset OAT set point down to Max Reset OAT the reset varies linearly from no reset to the max reset at Max Reset OAT set point. At ambient temperatures less than Max Reset OAT set point, reset is equal to the Max Reset set point.

Figure 80: OAT Reset

Unit Capacity ControlUnit capacity control will be performed as described in this section. A combination of starting/stopping

compressors and loading/unloading compressors is used to control the overall unit capacity.

Circuit Staging in Cool ModeStaging DelaysAny time the number of running circuits changes, the stage up delay will start and run for a time equivalent to the Stage Up Delay set point.

Any time the number of running circuits changes, the stage down delay will start and run for a time equivalent to the Stage Down Delay set point.

Any time there are no circuits running, both the stage up and stage down delays will be cleared.

Staging UpIf no circuits are running, then the first circuit will be started when evaporator LWT is higher than the target plus Startup Delta T set point.

If there are one or more circuits running, an additional circuit will be started when all of the following are true:

• Stage up delay has completed• [LWT is higher than the target plus the Stage Up Delta T

set point] OR [LWT is higher than the target plus half the Stage Up Delta T set point for at least two minutes]

• All running circuits are running at a capacity higher than the Load Stage Up set point or running in a limited state

In addition, for units with compressor VFD’s additional circuits cannot start unless one of the following is true:

• LWT is more than 10°C (18°F) above the target• LWT is 0.5°C to 10°C (0.9°F to 18°F) above the target

and the EWT pull down rate is less than 0.21(LWT – target)+0.39

Staging DownA circuit will shut down if any of the following are true:

• Multiple circuits are running, LWT is less than the target minus the Stage Down Delta T and Stage Down Delay has completed

• Multiple circuits are running , LWT is less than the target plus the Stage Up Delta T, Stage Down Delay has completed, and all running circuits are at a capacity less than the Light Load Stage Down set point

• Multiple circuits are running, a unit capacity limit is active, and all running circuits are at a capacity less than the Light Load Stage Down set point

• Regardless of the number of circuits running, all will shut down if the LWT is lower than the target less the Shut Down Delta T set point

• Number of running circuits is greater than the Max Number Circuit Running set point

• [One circuit is running, LWT is less than the target, Evaporator Delta T < 0.25*(Full Capacity Delta T set point/Number of Circuits set point), Variable Evap Flow set point is set to No] for longer than five minutes

Circuit Staging in Ice ModeStage Up DelayA fixed stage up delay of one minute between compressor starts should be used in this mode. When at least one

circuit is running, the other circuits should start as quickly as possible with respect to the stage up delay.

Staging UpThe first circuit should start when evaporator LWT is higher than the target plus the Startup Delta T set point.

When at least one circuit is running, another circuit will start when evaporator LWT is higher than the target

plus the Stage Up Delta T set point and the stage up delay has completed.

Staging DownAll circuits should be staged off when evaporator LWT is less than the target.


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Staging SequenceThis section defines which compressor is the next one to start or stop. In general, compressors with fewer starts will normally start first, and compressors with more run hours will normally stop first. Compressor staging sequence can also be determined by an operator defined sequence via set points.

Next To StartThe next compressor to start must meet the following requirements:

Lowest sequence number of those compressors available to start

• if sequence numbers are equal, it must have the least starts

• if starts are equal, it must have least run hours• if run hours are equal, it must be the lowest numbered

compressor

Next To StopThe next compressor to shut down must meet the following requirements:

Lowest sequence number of the compressors that are running

• if sequence numbers are equal, it must have the most run hours

• if run hours are equal, it must have the fewest starts• if starts are equal, it must be the lowest numbered

compressor

Maximum Circuits RunningIf the number of compressors running is equal to the Max Circuits Running set point, no additional compressors should be started. This applies in both Cool mode and Ice mode operation.

When multiple compressors are running, one should shut down if the number of compressors running is more than the Max Circuits Running set point.

Circuit Capacity Control in Cool ModeIn Cool mode, unit capacity is adjusted to control evaporator LWT to the LWT target. This is done by changing capacity of individual compressors one at a time.

With Non-VFD CompressorsFor units without compressor VFD’s, an error accumulator is used which accounts for loop pulldown and how far from the target the LWT is.

An error value is calculated as:

(LWT – target) + (EWT Slope X 2)

Every 4 seconds, the calculated error value is added to the error accumulator. When the total error is more than 2.8°C (5.04°F) a compressor will be loaded. When the total error is less than -2.8°C (-5.04°F) a compressor will be unloaded. Whenever a capacity change based on the error accumulator

occurs, the accumulator will be reset to zero.

Note that circuit level capacity change delays will still limit how often each circuit can change capacity.

Max Pulldown RateUnit capacity will not be increased based on the accumulator if EWT pulldown rate is higher than the Max Pulldown Rate set point minus 0.1°C (0.18°F) and the LWT is less than 15°C (59°F).

If the EWT pulldown rate is higher than the Max Pulldown Rate set point plus 0.1°C (0.18°F) and the LWT is less than 15°C (59°F), then the unit will decrease capacity.

DeadbandA deadband value is calculated as follows:

(Evap Delta T X 20)/(Unit capacity X Number of Circuits)

This deadband is centered around the LWT target but is only used in cases where the next capacity change is

either the large jump from 50% to 60% or from 60% to 50% on a compressor.

When the next compressor to load is currently at 50% capacity and the LWT is within the deadband, unit capacity will not increase.

When the next compressor to unload is currently at 60% capacity and the LWT is within the deadband, unit capacity will not decrease.

With VFD CompressorsCapacity will increase if LWT is more than 0.1°C (0.18°F) above the target. Capacity increases have a two second delay from the last increase the capacity control logic requested.

Capacity will decrease if LWT is more than 0.1°C (0.18°F) below the target. Capacity decreases have a two second delay from the last decrease the capacity control logic requested.

Note that circuit level capacity change delays will still limit how often each circuit can change capacity.

Pulldown Rate LimitCapacity will be limited from increasing or it will be decreased if the EWT pulldown rate exceeds calculated values and the LWT is less than 10°C (18°F) above the target.

The calculated capacity hold value varies from 0.5°C/min to 2.5°C/min (0.9°F/min to 4.5°F/min) as the LWT varies from 0.5°C to 10°C (0.9°F to 18°F) above the target.

The calculated capacity unload value varies from 0.7°C/min to 2.7°C/min (1.26°F/min to 4.86°F/min) as the LWT varies from 0.5°C to 10°C (0.9°F to 18°F) above the target.


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Load BalancingIn cool mode, capacity of the circuits is controlled so that when possible their capacities are balanced. Circuits will generally maintain a capacity imbalance that does not exceed 10%.

If a capacity change has not occurred for at least a minute and the difference in capacity between the highest and lowest capacity running circuits is more than 10%, then the circuit capacities will be adjusted. The circuit that is next to load will load and the circuit that is next to unload will unload simultaneously.

Circuits that are running in manual capacity control or running with active capacity limiting events will not be considered in the load balancing logic.

Load/Unload SequenceThis section defines which compressor is the next one to load or unload.

Next To LoadThe next compressor to load must meet the following requirements:

Lowest capacity of the running compressors that can load up

• if capacities are equal, it must have the lowest sequence number of the compressors that are running

• if the sequence numbers are equal, it must have the least starts

• if starts are equal, it must have the least run hours• if run hours are equal, it must be the lowest numbered

compressor

Next To UnloadThe next compressor to unload must meet the following requirements:

Highest capacity of the running compressors

• if capacities are equal, it must have the lowest sequence number of the compressors that are running

• if sequence numbers are equal, it must have the most run hours

• if run hours are equal, it must have the least startsif starts are equal, it must be the lowest numbered compressor

Circuit Capacity Control in Ice ModeIn Ice mode, running compressors are loaded up simultaneously at the maximum possible rate that allows for stable operation of the individual circuits.

Unit Capacity LimitsUnit capacity limits are used to limit total unit capacity in Cool mode only. Multiple limits may be active at any time, and the lowest limit is always used in the unit capacity control.

Soft load, demand limit, and network limit use a deadband around the actual limit value, such that unit capacity increase is not allowed within this deadband. If unit capacity is above the deadband, capacity is decreased until it is back within the deadband.

• For 2 circuit units, the deadband is 7%.• For 3 circuit units, the deadband is 5%.

The unit capacity will be adjusted as needed via compressor staging and capacity changes to meet the lowest active limit, but the last running compressor cannot be turned off to meet a limit lower than the minimum unit capacity.

Soft LoadSoft Loading is a configurable function used to ramp up the unit capacity over a period of time after the unit starts. The set points that control this function are:

• Soft Load Enable• Begin Capacity Limit• Soft Load Ramp

When the unit starts, the limit is set to the Begin Capacity Limit set point value. The limit then increases linearly from the Begin Capacity Limit set point to 100% over the amount of time specified by the Soft Load Ramp set point. If the option is turned off, the soft load limit is set to 100%.

Demand Limit The maximum unit capacity can be limited by a 4 to 20 mA signal on the Demand Limit analog input at the unit controller. This function is only enabled if the Demand Limit set point is set to ON.

As the signal varies from 4 mA up to 20 mA, the maximum unit capacity changes from 100% to 0%.

Network LimitThe maximum unit capacity can be limited by a network signal. This function is only enabled if the unit control source is set to network. The signal will be received through the BAS interface on the unit controller.

As the signal varies from 0% up to 100%, the maximum unit capacity changes from 0% to 100%.


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Current LimitCurrent Limit control should be enabled only when the current limit enable input is closed and the unit is operating in Cool mode.

Unit current will be calculated based on the 4-20 mA input that receives a signal from an external device. The current at 4 mA is assumed to be 0, and the current at 20 mA is defined by the Current At 20mA set point. As the signal varies from 4 to 20 mA, the calculated unit current varies linearly from 0 amps to the amp value defined by the set point.

Unit capacity will not be allowed to increase if the current value exceeds 95% of the Current Limit set point. The unit will reduce capacity if the current value exceeds the Current Limit set point.

Figure 81: Current Limit Operation

Cycle TimerThere is minimum time between compressor startup and shutdown. The time values are set by global circuit set points.

Start-to-start time is the time period from when a compressor starts until it starts again.

Stop-to-start is the time period from when a compressor stops until it restarts.

Table 76: Cycle Time Settings

Function DefaultRange

Minimum MaximumStart - Start time 20 min 15 min 60 minStop - Start time 5 min 3 min 20 min

Quiet ModeQuiet Mode is an operating mode designed to reduce unit sound levels by decreasing compressor and fan operating time. It is used during the night when the cooling load is usually reduced and the ambient temperature is lower.

Quiet Mode always requires the Quiet Mode set point to be set to ‘enable’. If it is set to ‘disable’, it will not activate for any reason.

Assuming this functionality is enabled, there are two ways it can become active:

1. If the unit mode is cool and the unit controller clock time is between the Quiet Mode start time and end time set points.

2. Control Source set point is set to network and the BAS command is ‘enable’.

When Quiet Mode is active, the Maximum Reset is applied to the cool LWT set point. However, if any reset type is selected, that reset will continue to be used rather than the Maximum Reset. Also, the saturated condenser target for each circuit will be offset by the Quiet Mode Condenser Target Offset.

RapidRestore™ OptionRapidRestore is an option that can be added to AWS chillers. The general purpose of the option is to allow the capability to restart more quickly and to load faster than normal when power is lost and restored.

EnablingThe Rapid Restore option is enabled via the Rapid Restore set point. Enabling will require the following to be

true:

• Rapid Restore module is present at address 22• DI1 on the Rapid Restore module has a signal• Unit is configured with compressor VFD’s OR it has slide

position sensors and liquid line solenoidvalves enabledIf any of the above conditions are no longer true, then the option will be disabled in the chiller.

Operation Following Power CycleThe chiller will enter Rapid Restore upon powering up when the following conditions are met:

• Rapid Restore is enabled• Power failure lasts less than the value of the Max Power

Failure Time set point• Power failure lasts at least one second (shorter power

loss may result in unpredictable operation)• Unit is enabled• LWT error is at least equal to the stage up delta t setting

Rapid Restore will end if any of the following conditions occur:

• LWT error is less than the stage up delta t setting• Unit capacity = 100%• All circuits become disabled for any reason• Unit becomes disabled for any reason• 10 minutes have passed since unit powered up


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Unit Level ChangesEvaporator Recirculation TimeWhen Rapid Restore is triggered, the time value used for the evaporator recirculation time will be 9 seconds for two circuit units and 6 seconds for three circuit units. Note that the evaporator recirculation time set point is not changed as a result of this.

With a goal of starting the chiller within 30 seconds after power is restored, the evaporator recirculation time must be trimmed to account for the controller boot time. The difference in times for two and three circuit units is due to the difference in the controller boot times based on the unit configuration. Many aspects of the configuration can affect the controller boot time, but the number of circuits has a substantial impact and therefore the time is selected based on that.

In addition, the controller firmware version can affect the boot time. The values chosen for the evaporator recirculation time were the result of testing with version 9.22 firmware. Other firmware versions may result in significantly different times to start the chiller.

Unit Capacity ControlDuring Rapid Restore, some parts of the unit capacity control logic are modified to allow faster loading of the unit:

• The stage up delay setting used for normal operation is ignored. In its place a fixed value of 20 seconds is used as the delay between starting circuits.

• For normal capacity control, all running circuits must meet certain requirements before any additional circuits can start. These requirements, which indicate running circuits have reached a certain capacity or are otherwise limited in capacity, are bypassed for fast loading.

• Max pulldown rate will be ignored during fast loading to avoid having it interfere in the chiller getting loaded up as fast as possible.

Circuit Level ChangesCompressor Cycle TimersWhen Rapid Restore is triggered, all compressor cycle timers are cleared to allow for starting more quickly.

The limitation of four starts per hour is still in effect though, and will not be cleared by the Rapid Restore operation.

Modulating Slide Unload OutputFor units without compressor VFD’s, the modulating slide unload output is turned on when Rapid Restore istriggered.

Normally this output is turned on when the compressor starts. Due to the sequence of events leading to a RapidRestore scenario it is likely that the modulating slide will not be in the minimum position for the start, so the output is activated before the compressor starts to help make sure it starts at as close to minimum capacity as possible.

EXV PreopenThe EXV preopen time will always be five seconds during Rapid Restore. This allows the first circuit as well as subsequent circuits to start faster since some normal starting conditions would have a preopen time as long as 25 seconds.

Capacity IncrementsFor faster loading, capacity increments are doubled for all AWS configurations.

There is one exception to this for compressors without VFD’s. The capacity change from 50% to 60% is a fixed step that is used for normal operation as well as for fast loading.


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Backup Chiller OperationIf DI2 on the Rapid Restore module has a signal and the unit has Rapid Restore enabled, then the chiller is considered a ‘backup chiller’.

When a ‘backup chiller’ is enabled, it will start using the same sequence and changes as a Rapid Restore with one difference. It will use an evaporator recirculation time of 22 seconds regardless of the unit configuration.

This will result in the time to start and time to load for a backup chiller being about the same as for a RapidRestore scenario.

Field supplied inputs to the units are required in the unusual case of a backup chiller being started after the power interruption rather than restarting the primary chiller. A field supplied control signal (normally a BAS) must turn off the Backup Chiller connection on the primary unit and turn on the Backup Chiller connection on the backup unit at the time of switching. See the Field Wiring Diagram for the Backup Chiller connection point (terminals 61 and 62). The backup unit must experience the power failure in order to perform the rapid restore function.

The time to restore full load will vary depending on the compressor starter, type number of compressors and if it is a primary or backup unit as shown on the following table.

Table 77: Time to Full Load

Starter Y-Delta Solid State VFDStandard Unit w/o Rapid Restore2-Circuit 21.6 min 21.6 min 18.8 min3-Circuit 29.0 min 29.0 min 24.7 minPrimary Unit w/ Rapid Restore2-Circuit 7.3 min 7.3 min 5.9 min3-Circuit 5.3 min 7.8 min 6.3 minBackup Unit w/ Rapid Restore2-Circuit 7.3 min 7.3 min 5.9 min3-Circuit 7.8 min 7.8 min 6.3 min

Software SettingsWhen the RapidRestore® option is ordered, hardware is added and factory software changes are made to enable the feature.

• Slide position sensors must be enabled (set to Yes). The setting is located at “View/Set Unit-> Unit Configuration -> Slide Pos Sens=”

• Liquid line solenoid must be enabled (set to Enable). The setting is loacted at “View/Set Unit-> Set-Up -> Liq Line SV=”

• RapidRestore® must be enabled (set to Enable). The setting is located at “View/Set Unit ->Set-Up -> Rapid Restore=”

Time ChartsThe following charts show the approximate best case scenario for time to start and time to full capacity with the RapidRestore® operation.The times shown represent the way the logic is programmed but do not account for small delays due to the program cycle time. As a result the actual times can be slightly longer due to small variations for each time segment stacking up. These charts also assume the fastest possible rate of loading so if any operating conditions would cause loading to pause or slow down, the times will be extended.

For units without compressor VFDs, the time charts also assume that the slide position sensors are enabled.


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Figure 82: Two Circuits Without Compressor VFDs

Figure 83: Three Circuits Without Compressor VFDs

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Figure 84: Two Circuits With Compressor VFDs

Figure 85: Three Circuits With Compressor VFDs


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CalculationsFeedback CapacityFeedback capacity is a representation of the actual capacity as a percentage of full capacity based on feedback regarding the actual running capacity of the compressor.

Non-VFD Compressors With Slide Position SensorsCompressors without VFD’s vary capacity via changes to the slide positions. The modulating slide can provide approximately 10% to 50% of the compressor capacity, while the non-modulating slide provides either 0% or 50% of the compressor capacity.

Considering the digital nature of the non-modulating slide position and the extreme positions of the modulating slide, there are four capacity values as shown in the following table. This capacity value will also vary linearly from 10% to 50% and from 60% to 100% as the modulating slide sensor signal varies from 4 to 20 mA.

Non-modulating Slide

Modulating Slide Sensor Signal

Feedback Capacity

Off 4 mA 10%

Off 20 mA 50%

On 4mA 60%

On 20 mA 100%

VFD CompressorsCompressors with VFD’s vary capacity via changes to the speed. The actual compressor speed is read from the VFD. Feedback capacity for a compressor with a VFD is:

Actual Compressor Speed x 100 ÷ Maximum Speed

Refrigerant Saturated TemperatureRefrigerant saturated temperature is calculated from the pressure sensor readings for each circuit. A function provides the converted value of temperature to match values published data for R134a:

-within 0.18°F (0.1°C) for pressure inputs from 0 to 300 psi (0 to 2070 kPa)

-within 0.36°F (0.2°C) for pressure inputs from -11.6 to 0 psi (80 kPa to 0 kPa)

Evaporator ApproachThe evaporator approach is calculated for each circuit. The equation is as follows:

Evaporator Approach = LWT – Evaporator Saturated Temperature

Condenser ApproachThe condenser approach is calculated for each circuit. The equation is as follows:

Condenser Approach = Condenser Saturated Temperature - OAT

Suction SuperheatSuction superheat is calculated for each circuit using the following equation:

Suction superheat = Suction Temperature – Evaporator Saturated Temperature

Discharge SuperheatDischarge superheat is calculated for each circuit using the following equation:

Discharge superheat = Discharge Temperature – Condenser Saturated Temperature

Oil Differential PressureOil Differential Pressure is calculated for each circuit with this equation:

Oil Differential Pressure = Condenser Pressure - Oil Pressure

Maximum Saturated Condenser TemperatureThe maximum saturated condenser temperature calculation is based on the compressor operational envelope.

If Saturated Evaporator Temperature is less than 0°C and glycol operation is not enabled then

Max Saturated Condenser Temperature = 1.596(Saturated Evaporator Temperature) + 68.3°C

If Saturated Evaporator Temperature is less than 0°C and glycol operation is enabled then

Max Saturated Condenser Temperature = 0.652(Saturated Evaporator Temperature) + 68.3°C

If Saturated Evaporator Temperature is 0°C or higher then

Max Saturated Condenser Temperature = 68.3°C

There are special cases where the Max Saturated Condenser Temperature will be set to 68.3°C regardless of the Saturated Evaporator Temperature. This will occur for 60 seconds following the transition from 50% to 60% or 60% to 50% if the unit does not have compressor VFD’s and has slide position sensors enabled. It will also occur for 60 seconds after loading from 46% to 50% or from 96% to 100% capacity if the unit does not have compressor VFD’s and does not have slide position sensors enabled.

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High Saturated Condenser – Hold ValueHigh Cond Hold Value = Max Saturated Condenser Value – 5°F (2.78°C)

High Saturated Condenser – Unload ValueHigh Cond Unload Value = Max Saturated Condenser Value – 3°F (1.67°C)

High Motor Amp LimitsHigh motor amp limits are used only when the starter type is VFD. A reference amp value is selected based on the following table.

Size Economizer 380V 460V 575V 400V204 Yes 202 167 134 187204 No 158 130 104 150215 Yes 246 203 162 228215 No 193 159 127 183232 Yes 288 238 - - 268241 Yes 346 286 - - 322263 Yes 406 335 - - 376

The reference amp value is then used to establish the amp limits using the following calculations:

High Motor Amps Hold value = reference value x 1.21

High Motor Amps Delayed Unload value = reference value x 1.25

High Motor Amps Unload value = reference value x 1.30

High Motor Amps Shutdown value = reference value x 1.35

Reduced Amp LimitsAn option to select lower amp limits is available on certain C vintage models with 460V 60hz power. The lower limits are selected when the Amp Rating set point is set to ‘reduced’. Values used in this special case are shown in the table below.

Model # Circuit 1 Circuit 2

Hold Delayed Unload Unload Shutdown Hold Delayed

Unload Unload Shutdown

210CDH 177 184.08 192.93 201.78 177 184.08 192.93 201.78

230CDH 166 172.64 180.94 189.24 219 227.76 238.71 249.66

240CDP 163 169.52 177.67 185.82 163 169.52 177.67 185.82

265CDP 157 163.28 171.13 178.98 206 214.24 224.54 234.84

280CDH 210 218.4 228.9 239.4 260 270.4 283.4 296.4

310CDP 198 205.92 215.82 225.72 245 254.8 267.05 279.3

330CDH 240 249.6 261.6 273.6 303 315.12 330.27 345.42

365CDP 245 254.8 267.05 279.3 288 299.52 313.92 328.32


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Circuit Control LogicCircuit AvailabilityA circuit is available to start if the following conditions are true:

• Circuit switch is closed• No circuit alarms are active• Circuit Mode set point is set to Enable• BAS Circuit Mode set point is set to Auto• No cycle timers are active• Discharge Temperature is at least 9°F (5°C) higher than

Oil Saturated Temperature

Circuit States

Figure 86: Circuit State Transitions

T1 – Off to Preopen - All of the following are required:

• Circuit is available to start per the previous section• Adequate pressure in the evaporator and condenser (see

No Pressure At Start Alarm)• Unit capacity control logic requires the circuit to start

T2 – Preopen to StartEXV completes preopen operation.

T3 – Start to Run - All of the following are required:

• Compressor has been running for at least 20 seconds

• Evaporator Pressure is at least as high as the Low Pressure Unload set point

T4 – Run to Pumpdown - Any of the following are required:

• Unit capacity control logic requires this circuit to stop• Unit state is pumpdown• A pumpdown alarm occurs on the circuit• Circuit switch is open• Circuit Mode set point is set to Disable• BAS Circuit Mode set point is set to Off

T5 – Pumpdown to Off - Any of the following are required:

• Evaporator Pressure drops below the Pumpdown Pressure set point

• Service Pumpdown set point is set to Yes and Evaporator Pressure drops below 35 kPa

• Circuit has been pumping down for longer than the Pumpdown Time Limit set point

• Unit state is Off• Rapid stop alarm occurs on the circuit

T6 – Run to Off - Any of the following are required:

• Unit state is Off• Rapid stop alarm occurs on the circuit

T7 – Start to Off - Any of the following are required:

• Unit state is Off• Rapid stop alarm occurs on the circuit• Circuit has been in start state longer than the Start Time

Limit set pointT8 – Start to Pumpdown - Any of the following are required:

• Unit capacity control logic requires this circuit to stop• Unit state is pumpdown• A pumpdown alarm occurs on the circuit• Circuit switch is open• Circuit Mode set point is set to Disable• BAS Circuit Mode set point is set to Off

Circuit Startup LogicCircuit startup is the time period following the starting of the compressor on a circuit. During the startup, the

low evaporator pressure alarm logic should be ignored. When the compressor has been running at least 20 seconds and the evaporator pressure rises above the low evaporator pressure unload set point, the startup is complete.

If the pressure does not rise above the unload set point and the circuit has been running longer than the Startup Time set point, then the circuit will shut down and an alarm triggered. If the evaporator pressure drops below the absolute low pressure limit then the circuit will shut down and the same alarm triggered.

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Low OAT Restart LogicLow OAT restart logic allows multiple start attempts in low and moderate ambient conditions. If the condenser saturated temperature is less than 15.5°C (59.9°F) when the compressor starts, the startup is considered to be a ‘low OAT start’. If a low OAT start is not successful the circuit shall shut down, but no alarm should be triggered for the first two attempts of the day. If a third low OAT start attempt fails, then the circuit should shut down and the Low OAT Restart Alarm should be triggered.

The restart counter should be reset when either a startup is successful, the Low OAT Restart alarm is triggered, or the unit time clock shows that a new day has started.

Minimum Discharge SuperheatDuring operation, the minimum discharge superheat is 12°C (21.6°F). When a circuit is running, it can only increase capacity during automatic capacity control when certain requirements related to the minimum discharge superheat are met. The requirements are as follows:

• Circuit must be in the start or run state for at least three minutes

• DSH must be at least 12°C (21.6°F) for longer than 30 seconds

The first requirement means that for at least three minutes after starting, the circuit cannot increase capacity. This is done to allow the oil temperature to equalize with the discharge gas temperature since the discharge temperature sensor is actually reading the oil temperature in the sump. In addition, running at the minimum capacity allows the discharge superheat to build faster.

The second requirement is a factor at startup, but will also come into play any time DSH drops below the minimum after the circuit has increased capacity.

Circuit StatusThe displayed circuit status is determined by the conditions in the following table:

Table 78: Circuit Status

Enum Status Conditions1 Off:Ready Circuit is ready to start when

needed.2 Off:Stage Up

DelayCircuit is off and cannot start due to stage up delay.

3 Off:Cycle Timer Circuit is off & cannot start due to active cycle timer.

4 Off: Max Comp Starts

Circuit is off & cannot start due to four starts per hour.

5 Off:BAS Disable Circuit is off and cannot start due to BAS Circuit Mode input being set to Off.

6 Off:Keypad Disable

Circuit is off and cannot start due to Circuit Mode set point on HMI is set to disable.

7 Off:Circuit Switch Circuit is off & circuit switch is off.

8 Off:Oil Heating Circuit is off and Discharge Temperature not at least 5°C higher than Oil Saturated Temperature.

9 Off:Alarm Circuit is off & cannot start due to active circuit alarm.

10 Off:Test Mode Circuit is in test mode.11 EXV Preopen Circuit is in preopen state.12 Run:Pumpdown Circuit is in pumpdown state.13 Run:Normal Circuit is in run state &

running normally.14 Run:Disch SH Low Circuit is running & cannot

load due to low discharge superheat.

15 Run:Evap Press Low

Circuit is running & cannot load due to low evaporator pressure.

16 Run:Cond Press High

Circuit is running & cannot load due to high condenser pressure.

17 Run: High LWT Limit

Circuit is running and cannot load due to the evaporator LWT exceeding the limit for allowing full capacity.

18 Run: High VFD Amps

Circuit is running and cannot load due to high motor current.


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Compressor ControlThe compressor/starter output will be on when the circuit state is Start, Run, or Pumpdown. It will not be running when the circuit state is Off or Preopen. Starting and stopping of compressors is done via the digital output for those without VFD’s and with VFD’s.

Cycle TimersA minimum time must pass between starts of each compressor. When the compressor starts, a timer starts which will run for a time determined by the Start-Start Timer set point.

A minimum time must pass between the stop and start of each compressor. When the compressor stops, a timer starts which will run for a time determined by the Stop-Start Timer set point.

While either timer is running the compressor cannot start. Both cycle timers will be enforced even through cycling of power to the chiller. These timers may be cleared via the Clear Cycle Timers set point.

Starts Per Hour LimitIn addition to the cycle timers, a limit of four starts per hour is enforced. A buffer of start times for the last four starts is maintained. If the current time is an hour or less after the first timestamp in the buffer, the next start will be delayed.

This limit is cleared if the Clear Cycle Timers set point is set to On.

Capacity Control – Without Compressor VFDWhen the unit is configured without compressor VFD’s, compressors vary capacity via positioning of a modulating slide and a non-modulating slide.

Capacity TargetThis section explains how the capacity target is determined.

Auto Capacity ControlAfter starting, the compressor capacity target will be the minimum physical capacity (approximately 10%), and the compressor will not increase in capacity until it has been running at least three minutes and the minimum discharge superheat has been established for at least 30 seconds. After this condition is met, the compressor capacity target will move via steps to the minimum running capacity even if unit capacity control commands do not require the compressor to load up. This minimum running capacity target is:

• 25% if configured with slide position sensors• 26% if configured without slide position sensors

Once the compressor has been loaded to the minimum running capacity target, the capacity target will always be at least equal to this value while the compressor is running.

Changes to the capacity target are performed as needed to meet unit capacity requirements based on load and unload commands coming from the unit capacity control logic (see unit

capacity control section). Standard capacity steps are:

• 5% if configured with slide position sensors• 4% if configured without slide position sensors

A minimum time of 20 seconds should pass between capacity changes other than the capacity transitions from 50% to 60% or from 60% to 50%. For those capacity transitions, a minimum time of 30 seconds will pass before capacity is changed again.

Manual Capacity ControlThe capacity target of the compressor may be controlled manually. Manual capacity control is enabled via a set point with choices of auto or manual. Another set point allows setting the compressor capacity target from 10% to 100%.

The compressor capacity target will be stepped up or down until it is equal to the manual capacity set point. If the set point is between available capacity steps the capacity target will be set to the capacity step below the set point. Changes to the capacity target will be made at the maximum rate allowed in automatic capacity control. Capacity control may be set to manual at any time.

Capacity control shall revert back to automatic control if either:

• the circuit state changes from run to any other state• capacity control has been set to manual for four hours

Slide ControlThe slides will be positioned to meet the capacity target as shown in the following sections. All slide control outputs are off when the compressor is off and will only be activated when the compressor is running.

Without Slide Position SensorsNon-modulating Load/Unload Select:

Any time the capacity target is less than 60%, the load/unload select output for the non-modulating slide should be off to unload the non-modulating slide. If the capacity target is 60% or higher, this output should be on.

Modulating load output:

When the capacity target is 10% or 60%, the modulating slide load output should be off. When the capacity target is 50% or 100%, this output should be on.

Modulating unload output:

When the capacity target is 10% or 60%, the modulating slide unload output should be on. When the capacity target is 50% or 100%, this output should be off.

At capacity targets between 10% and 50%, and 60% and 100%, the modulating slide is to be moved by pulsing the load and unload outputs. When the capacity target increases, the load output should be pulsed. When the capacity target decreases, the unload output should be pulsed.

With Slide Position SensorsNon-modulating load output:

This output should be off any time the capacity target is less than 60%. If the capacity target is 60% or higher, this output should be on.

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Non-modulating unload output:

This output should be on any time the capacity target is less than 60%. If the capacity target is 60% or higher, this output should be off.

Modulating load output:

When the capacity target is 10% or 60%, the modulating slide load output should be off. When the capacity target is 50% or 100%, this output should be on.

Modulating unload output:

When the capacity target is 10% or 60%, the modulating slide unload output should be on. When the capacity target is 50% or 100%, this output should be off.

At capacity targets between 10% and 50%, and 60% and 100%, the modulating slide should be moved via pulsing of the load and unload outputs to achieve the required capacity. Feedback from the slide position sensor should be used to maintain the slide in a position that allows compressor capacity to fall within 1.5% of the capacity target.

Turbo solenoid outputThe turbo solenoid output is activated to assist in moving the modulating slide in certain conditions. This solenoid should be enabled via turning on the output when the pressure difference between oil pressure and evaporator pressure is less than or equal to 415 kPa (60.2 PSI) for at least 5 seconds. It should be disabled when the pressure difference is above 415 kPa (60.2 PSI).

Capacity Control – With Compressor VFDWhen the unit is configured with compressor VFD’s, compressors vary capacity via changes to the motor speed (frequency). The speed is controlled via writing to a specific modbus register in the VFD.

Auto Capacity ControlImmediately after starting, the compressor speed will be set to 24hz, and the speed will not increase until it has been running at least three minutes and the minimum discharge superheat has been established for at least 30 seconds. After this condition is met, the changes to the speed are performed as needed to meet unit capacity requirements based on load and unload commands coming from the unit capacity control logic(see unit capacity control section).

Speed is normally changed in 2hz steps. The minimum speed is 24hz.

When the load delay is active, the speed cannot increase. When the unload delay is active, the speed cannot decrease. The load and unload delay times are calculated values.

Manual Capacity ControlThe capacity target of the compressor may be controlled manually. Manual capacity control is enabled via a set point with choices of auto or manual. Another set point allows setting the compressor capacity target from 10% to 100%.

The compressor speed will be stepped up or down until it is equal to the speed that corresponds to the manual capacity set point. If the set point is set to a percentage value corresponding to a speed that is in between normal speed steps, then the speed will be set to the next lowest speed step.

Changes to the speed will be made as fast as allowed by the calculated load and unload delays.

Capacity control may be set to manual at any time.

Capacity control shall revert back to automatic control if either:

• the circuit state changes from run to any other state• capacity control has been set to manual for four hours

Load and Unload Delay CalculationAs the LWT error varies from the Start Delta T set point to 0.1°C (0.18°F), the load delay varies from 15 seconds to 25 seconds linearly.

If the unit is configured with constant evaporator water flow, as the LWT error varies from -0.7°C to -0.1°C (-1.26°F to -0.18°F) the unload delay varies from 10 seconds to 20 seconds.

If the unit is configured with variable evaporator water flow, as the LWT error varies from -0.7°C to -0.1°C (-1.26°F to -0.18°F) the unload delay varies from 10 seconds to 13 seconds.

If the unit capacity control requires unloading due to the EWT pulldown rate, the unload delay will be forced to 20 seconds.

Condenser Fan ControlThe compressor must be running in order to stage fans on. All running fans will turn off when compressor goes to the Off state.

Saturated Condenser Temperature TargetThe saturated condenser temperature target is calculated by first using the following equation:

Sat condenser temp target raw = 0.8332(suction sat temp) + 63.6°F (35.0°C)

This value is then limited to a range defined by the Condenser Saturated Temperature Target min and max set point. These set points simply cut off the value to a working range, and this range can be limited to a single value if the two set points are set to the same value.


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Fan Staging ControlAlthough some fan outputs control more than one fan, the total number of fans running will always change by one except when the compressor shuts down and all fans stop. Fan staging will accommodate anywhere from 5 to 12 fans per circuit according to the following table:

Table 79: Fan Staging OutputsFan Output Number # of

Digintal Outputs

Used

# of Fans1 2 3 4 5 6

* * ** *4

5* * ** ** 6* * ** ** *

57

* * ** ** ** 8* * ** ** *** 9* * ** ** *** *

610

* * ** ** *** ** 11* * ** ** *** *** 12

Fan Outputs per Fan StageThe following tables show the outputs energized for each fan stage depending on the number of fans per circuit:

Table 80: 5 Fans per CircuitFan Stage Fan Outputs On

1 1

2 1,2

3 1,3

4 1,2,3

5 1,2,3,4


1 1

2 1,2

3 1,3

4 1,2,3

5 1,3,4

6 1,2,3,4


1 1

2 1,2

3 1,3

4 1,2,3

5 1,3,4

6 1,2,3,4

7 1,2,3,4,5


1 1

2 1,2

3 1,3

4 1,2,3

5 1,3,4

6 1,2,3,4

7 1,3,4,5

8 1,2,3,4,5


1 1

2 1,2

3 1,3

4 1,2,3

5 1,3,4

6 1,2,3,4

7 1,2,3,5

8 1,3,4,5

9 1,2,3,4,5


1 1

2 1,2

3 1,3

4 1,2,3

5 1,3,4

6 1,2,3,4

7 1,2,3,5

8 1,3,4,5

9 1,2,3,4,5

10 1,2,3,4,5,6


1 1

2 1,2

3 1,3

4 1,2,3

5 1,3,4

6 1,2,3,4

7 1,2,3,5

8 1,3,4,5

9 1,2,3,4,5

10 1,3,4,5,6

11 1,2,3,4,5,6

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1 1

2 1,2

3 1,3

4 1,2,3

5 1,3,4

6 1,2,3,4

7 1,2,3,5

8 1,3,4,5

9 1,2,3,4,5

10 1,2,3,5,6

11 1,3,4,5,6

12 1,2,3,4,5,6

Staging UpSix stage-up deadbands are used in fan staging:

Stage On Deadband 0 - used when no fans are runningStage On Deadband 1 - used when 1 fan is runningStage On Deadband 2 - used when 2 fans are runningStage On Deadband 3 - used when 3 fans are runningStage On Deadband 4 - used when 4 fans are runningStage On Deadband 5 - used when 5 or more fans are running

When the saturated condenser temperature is above the Target + the active deadband, a Stage Up error is accumulated.

Stage Up Error Step = Saturated Cond. temperature – (Target + Stage-Up deadband)

The Stage Up Error Step is added to Stage Up Accumulator once every 5 seconds, only if the Saturated Condenser Refrigerant Temperature is not falling. When Stage Up Error Accumulator is greater than 19.8°F (11°C) another stage is added.

If the circuit is configured to have a VFD on the first fan, then the first fan will turn on when condenser temperature is above the target.

When a stage up occurs or the saturated condenser temperature falls back within the Stage Up dead band the Stage Up Accumulator is reset to zero.

Staging DownFive stage down dead bands are used in fan staging.

Stage Off Deadband 2 - used when 2 fans are runningStage Off Deadband 3 - used when 3 fans are runningStage Off Deadband 4 - used when 4 fans are runningStage Off Deadband 5 - used when 5 fans are runningStage Off Deadband 6 - used when 6 or more fans are running

When the saturated condenser refrigerant temperature is below the Target – the active deadband, a Stage Down error is accumulated.

Stage Down Error Step = (Target - Stage Down dead band) - Saturated Condenser Refrigerant temperature

The Stage Down Error Step is added to Stage Down Accumulator once every 5-second Stage Down Error Delay seconds. When the Stage Down Error Accumulator is greater than 5°F (2.8°C) another stage of condenser fans is removed.

When one fan is running, a fixed point is used in place of a deadband. When the Saturated Condenser temperature drops below 69.8°F (21.1°C), stage down error is accumulated.

When a stage down occurs or the saturated condenser temperature rises back within the Stage Down dead band the Stage Down Error Accumulator is reset to zero.

Figure 87: Fan Staging Up and Down

Fan Control with VFDAs an option, the first fan may be driven by a VFD. The VFD control will vary the fan speed to drive the saturated condenser temperature to a target value. The target value is normally the same as the saturated condenser temperature target.

VFD Speed SignalThe VFD speed signal should always be 0 when the fan stage is 0. When the fan stage is greater than 0, the VFD speed signal will vary between the minimum and maximum speed to control the saturated condenser temperature to the VFD target. The minimum and maximum speed are set by the VFD Min Speed and VFD Max Speed set points.

Stage Up CompensationIn order to create a smoother transition when the fan stage increases, the VFD compensates by slowing down initially. This is accomplished by adding the new fan stage up deadband to the VFD target. The higher target causes the VFD logic to decrease fan speed. Then, every 2 seconds, 0.1°C (0.18°F) is subtracted from the VFD target until it is equal to the saturated condenser temperature target set point.

If this error accumulation is greater than 19.8ºF (11ºC), then stage up.

If this error accumulation is greater than 5.0ºF (2.8ºC), then stage down.

(Target) + (Fan Stage Up Deadband)

Target Discharge Saturated Temp

(Target) - (Fan Stage Down Deadband)


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EXV ControlThe EXV is moved at a rate of 150 steps per second, with a total range of 3810 steps. Positioning is determined as described in the following sections, with adjustments made in increments of 0.1% of the total range.

Figure 88: EXV Control Transitions

T1 – Closed to Preopen - EXV goes to preopen state when the circuit enters the preopen state and the selected preopen time is not 0.

T2 – Closed to Pressure Control - EXV goes to pressure control state when the circuit enters the preopen state and the selected preopen time is 0. This effectively skips the EXV preopen operation.

T3 – Preopen to Pressure Control - EXV has been in preopen state for a time equal to the selected preopen time.

T4 – Pressure Control to Superheat Control - All of the following are required:

• DSH is 12°C or higher for at least a minute or SSH is less than the SSH target for at least five seconds

• Compressor has been running at least three minutes• Evaporator LWT is 15.5°C (59.9°F) or less• EXV has been in pressure control state for at least a

minuteT5 – Superheat Control to Pressure Control - Any of the following are required:

• Evap LWT is higher than 17°C (62.6°F) for at least 20 seconds

• DSH is less than 12°C (21.6°F) for at least five minutes and evaporator pressure is higher than the pressure target will be in pressure control

T6 – Preopen to Closed - Any of the following are required:

• Circuit state is Off• Circuit state is Pumpdown

T7 – Pressure Control to Closed - Any of the following are required:

• Circuit state is Off• Circuit state is Pumpdown

Closed PositionWhen the EXV enters the closed state, it should be reinitialized to maintain accurate positioning. This is done by issuing a specific command to the stepper driver that results in the EXV being moved in the closed direction by 3910 steps.

If the unit is configured without liquid line solenoid valves, the EXV position should be 0% any time the EXV is in a closed state.

If the unit is configured with liquid line solenoid valves, the EXV position should be 0% when the EXV initially enters the closed state, while it is reinitializing to the zero position. After the EXV position command has been 0% for a minute, the EXV should be moved to 5% to prevent excessive pressure buildup between the EXV and liquid line solenoid valve.

Preopen OperationPreopen operation will vary depending on the unit configuration. The unit will be configured for use with or

without liquid line solenoid valves via a set point.

Without Liquid Line Solenoid ValvesWhen the unit is configured without liquid line solenoid valves, the EXV will open to 5% and the EXV state

will remain preopen for 5 seconds before the compressor is started.

With Liquid Line Solenoid ValvesWhen the unit is configured with liquid line solenoid valves, preopen operation will vary depending on the evaporator and condenser pressure at the time the circuit is starting.

If evaporator pressure is less than condenser pressure, the EXV will open to 50% and the EXV state will remain preopen for 25 seconds before the compressor is started.

If evaporator pressure is equal to or higher than condenser pressure, the preopen time will be 0 (position will already be 5%).

Pressure Control OperationIn pressure control, the EXV is positioned to control the evaporator pressure to a target.

Minimum Pressure Target CalculationThere is a minimum allowed value for the pressure target calculation on units with and without compressor VFD’s. To get this minimum value, first the following calculation is performed:

LWT x 6.3617 + 109.65

Then, this value is limited to a range from the low pressure hold set point plus 14 kpa up to 350 kpa. This value

is the minimum that is allowed for the pressure target calculations.

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Pressure TargetThe pressure target is calculated based on evaporator LWT, offset based on DSH, then limits applied to keep the target in an acceptable range.

The base target value varies from 180 kpa to 350 kpa (26.11 to 50.76 PSI) as LWT varies from 4.44°C to 26.67°C (39.99°F to 80°F), and is then limited to a range from the calculated minimum pressure target value up to 350 kpa (50.76 PSI).

The base target may be adjusted if the discharge superheat is not within an acceptable range. If the superheat is less than 12°C (21.6°F), the pressure target will be reduced by 24 x (DSH – 12). If the superheat is more than 22°C (39.6°F), the pressure target will be increased by 24 x (DSH – 22). The adjusted target is limited to a range from the calculated minimum pressure target value up to 350 kpa (50.76 PSI).

When the EXV transitions from closed or preopen to pressure control, the pressure target will be forced to the calculated minimum pressure target value for three minutes. After that, the pressure target will begin increasing by 1 kpa every second until reaching the normal calculated target. Any time a low pressure ratio is encountered during this time, the target will stop increasing until the pressure ratio is normal for at least 10 seconds.

When the EXV transitions from superheat control to pressure control, the target will start at the current evaporator pressure. The pressure target will then be decreased until reaching the normal calculated target, at a rate of 3 kPa (0.44 PSI) per second. If the pressure at transition is less than the calculated target, then pressure control will start immediately with the calculated target.

Superheat Control OperationIn superheat control, the EXV is positioned to control suction superheat. The superheat target varies linearly from 2.8 to 5.5 °C (5 to 9.9 °F) as discharge superheat changes from 17 to 12 °C (30.6 to 21.6 °F) and is limited to a range from 2.8 to 5.5 °C (5 to 9.9 °F). This target is constantly updated, and averaged over a 10 second period.

When the EXV transitions to the superheat control state, the target will start at the current suction superheat value (limited to a maximum of 8°C or 46.4°F). This target will then be adjusted 0.1°C (0.18°F) every five seconds until reaching the normal calculated target.

EXV Operating RangeWhenever the compressor is running and the circuit is not pumping down, the EXV can operate in a range from 5% to 100% open.

EXV Positioning – Pressure and Superheat ControlWhen the EXV control state is either pressure control or superheat control, the position is adjusted using a PID function. The proportional factor of the PID when in superheat control is determined by the compressor size to allow for stable control

of the superheat. Position commands generated by the PID are filtered so that the minimum change in position is 0.3%. Changes of less than this are ignored.

Position commands generated by the PID are also limited to a maximum change of 1.1% for chillers with two circuits and 0.9% for chillers with three circuits. This allows the stepper to move the valve to the commanded position before the next position command is issued in the program cycle. The maximum change is different between two and three circuit chillers because the number of circuits has a large effect on the program cycle time.

The minimum and maximum change limits are in place to minimum the chance of losing EXV steps.

Economizer ControlThe economizer is activated by turning on the output that controls the economizer solenoid valve. Conditions for activating the economizer differ between units with and without compressor VFD’s.

Economizer Activation – Without Compressor VFD’sThe economizer is activated when the circuit is in the run state and the target capacity exceeds 95%.

It will turn back off when either the target capacity drops below 80% or the circuit is no longer in a run state.

Economizer Activation – With Compressor VFD’sThe economizer is activated when the circuit is in the run state, the capacity reaches the Economizer Enable Capacity set point or higher, and the OAT is less than a certain value. The temperature value is dependent on the sizes of the compressors on the unit. For units that have an F4AS or F4AL compressor on any circuit, the temperature value is 40.83°C (105.5°F). For all other units the value is 43.61°C (110.5°F).

The economizer will turn back off when either the capacity drops to 20% below the Economizer Enable Capacity set point or the circuit is no longer in the run state.

Liquid InjectionLiquid injection is activated by turning on the liquid injection output. It will be activated when the circuit is in the run state and the discharge temperature rises above the Liquid Injection Activation set point.

Liquid injection will be turned off when the discharge temperature drops to 15°C (27°F) below the activation set point or the circuit is no longer in the run state.


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Liquid Line Solenoid ValveThe liquid line solenoid valve output will be on any time the circuit is in the Start or Run state. It will be off when the circuit is in any other state.

Capacity OverridesThe following conditions override automatic capacity control as described. These overrides keep the circuit from entering a condition in which it is not designed to run.

Low Evaporator PressureThe compressor capacity will be decreased or limited from increasing if the evaporator pressure starts to approach the limits. See the section on the low evaporator pressure events for details on trigger conditions, actions taken, and reset conditions.

High Condenser PressureThe compressor capacity will be decreased or limited from increasing if the condenser pressure starts to approach the limits. See the section on the high condenser pressure events for details on trigger conditions, actions taken, and reset conditions.

High Motor AmpsIf the unit has compressor VFD’s, the compressor capacity will be decreased or limited from increasing if the motor amps start to approach the limits. See the section on the high motor amp events for details on trigger conditions, actions taken, and reset conditions.

High Water Temperature Capacity LimitIf the evaporator LWT is 25°C (77°F) or higher, and the capacity is 80%, the compressor will not increase in capacity.

If the evaporator LWT is 25°C (77°F) or higher, and the capacity is higher than 80%, the compressor capacity will be reduced until it is at 80% or lower.

Once this limit has triggered, it will be in effect until evaporator LWT is less than 25°C (77°F) for at least a minute.

Part Load ShutdownIf the unit is configured with glycol, then a circuit may shut down if certain conditions are met. See the section on the part load shutdown event for details on trigger conditions, actions taken, and reset conditions.

Compressor VFD Fault ClearingWhen a VFD fault occurs, the VFD fault alarm is triggered in the controller. When the alarm is cleared in the

controller, the fault will be cleared in the VFD assuming the fault condition no longer exists.

Solid State Starter Fault ClearingUnits could have either Benshaw or Schneider starters. The controller software operation differs depending on which starters the unit is equipped with.

The Benshaw starters have special programming that automatically clears certain faults. So, when alarms are cleared in the controller the starter will be ready to run if the fault is an auto clearing fault and it is no longer active. Some faults in the Benshaw starter do not automatically clear, and those faults must be cleared in the starter before the starter fault alarm can be cleared in the controller.

In the Schneider starters, all faults must be manually cleared. In order to mimic the behavior of the Benshaw

starters, the last fault code will be read from the Schneider starters. If the fault is one that can be auto cleared,

then the reset command will be sent to the starter when the alarms are cleared in the controller. This communication is via modbus, and if the communication is not working then all starter faults must be cleared manually in the starter.

alarMs and evenTs


alarMs and evenTs

Situations may arise that require some action from the chiller, or that should be logged for future reference. Alarms are classified in the following sections per the Global Chiller Protocol Standard using the Fault/Problem/Warning scheme.

When any Unit Fault Alarm is active, the alarm digital output should be turned on continuously. If all circuits have a Circuit Fault Alarm active, the alarm digital output should be turned on continuously. If no Unit Fault Alarm is active and only some of the circuits have Circuit Fault Alarms active, the alarm digital output should alternate five seconds on and five seconds off.

All alarms appear in the active alarm list while active. All alarms are added to the alarm log when triggered and when cleared. Entries in the log representing the occurrence of an alarm will be preceded by ‘+’ while entries representing the clearing of an alarm will be preceded by ‘-‘.

Signaling AlarmsThe following actions will signal that an alarm has occurred:

The unit or a circuit will execute a rapid or pumpdown shutoff.

An alarm bell icon will be displayed in the upper right-hand corner of all controller screens including the optional remote user interface panel’s screens.

An optional field supplied and wired remote alarm device will be activated.

Clearing Alarms/Faults Active alarms can be cleared through the keypad/display or a BAS network. Alarms are automatically cleared when controller power is cycled. Alarms are cleared only if the conditions required to initiate the alarm no longer exist. All alarms and groups of alarms can be cleared via the keypad or network via LON using nviClearAlarms and via BACnet using the ClearAlarms object.

To use the keypad, follow the Alarm links to the Alarms screen, which will show Active Alarms and Alarm Log. Select Active Alarm and press the wheel to view the Alarm List (list of current active alarms). They are in order of occurrence with the most recent on top. The second line on the screen shows Alm Cnt (number of alarms currently active) and the status of the alarm clear function. Off indicates that the Clear function is off and the alarm is not cleared. Press the wheel to go to the edit mode. The Alm Clr (alarm clear) parameter will be highlighted with OFF showing. To clear all alarms, rotate the wheel to select ON and enter it by pressing the wheel.

An active password is not necessary to clear alarms.

If the problem(s) causing the alarm have been corrected, the alarms will be cleared, disappear from the Active Alarm list and be posted in the Alarm Log. If not corrected, the On will immediately change back to OFF and the unit will remain in the alarm condition.

Remote Alarm SignalThe unit is configured to allow field wiring of a remote alarm device. See the field wiring diagram in the Electrical Information section.

Description of AlarmsThe alarms have the following conventions:

ALARM, any condition outside of normal operation requiring some action on the part of the control or information useful to the operator or to be logged for future reference

WARNING, an alarm indicating a condition that is not critical to safe unit operation, but is worthy of note and/or logging.

PROBLEM, a alarm that indicates operation off normal and requires some action by the control such as unloading a compressor.

FAULT, an alarm with consequences serious enough to require a compressor, a circuit, or entire unit to shutdown. The shutdown may be rapid, bypassing the pumpdown cycle, or controlled and incorporate the pumpdown cycle.

Alarm description conventions:

• CnCmpn OffMechPressLo, the Cn is the circuit number; the Cmpn is the compressor number.

• UnitOff EvapWaterFlow, UnitOff refers to the entire unit.

Unit FaultsPVM/GFP FaultAlarm description (as shown on screen): UnitOffPvmGfp

Trigger: Power Configuration = Single Point

AND PVM/GFP Enable = Yes

AND Unit PVM/GFP Input is open

Action Taken: Rapid stop all circuits

Reset: Auto reset for at least 5 seconds when:

Unit PVM/GFP Input is closed

OR PVM/GFP Enable = No

OR Power Configuration = Multi Point

Evaporator Flow LossAlarm description (as shown on screen): UnitOffEvapWaterFlow

Trigger:

1: Evaporator Pump State = Run AND Evaporator Flow Digital Input = No Flow for time > Flow Proof Set Point AND at least one compressor running

2: Evaporator Pump State = Start for time greater than Recirc Timeout Set Point and all pumps have been tried and Evaporator Flow Digital Input = No Flow


Reset: This alarm can be cleared manually via the unit controller keypad or BAS command.

If active via trigger condition 1:

When the alarm occurs due to this trigger, it can auto reset the first two times each day, with the third occurrence being manual reset.


alarMs and evenTs

For the auto reset occurrences, the alarm will reset automatically when the evaporator state is Run again. This means the alarm stays active while the unit waits for flow, then it goes through the recirculation process after flow is detected. Once the recirculation is complete, the evaporator goes to the Run state which will clear the alarm. After three occurrences, the count of occurrences is reset and the cycle starts over if the manual reset flow loss alarm is cleared.

If active via trigger condition 2:

If the flow loss alarm has occurred due to this trigger, it is a manual reset alarm.

Evaporator Water Freeze ProtectAlarm description (as shown on screen): UnitOffEvapWaterTmpLo

Trigger: Evaporator LWT or EWT drops below evaporator freeze protect set point for longer than evap recirc time specified. If the sensor fault is active for either LWT or EWT, then that sensor value cannot trigger the alarm.


Reset: This alarm can be cleared manually via the unit controller keypad if alarm trigger conditions no longer exist.

Evaporator Water Temperatures InvertedAlarm description (as shown on screen): UnitOffEvpWTempInvrtd

Trigger: Evap EWT < Evap LWT - 1 deg C AND at least one circuit is running AND EWT sensor fault not active AND LWT sensor fault not active for 30 sec

Action Taken: No stop on all circuits


Leaving Evaporator Water Temperature Sensor FaultAlarm description (as shown on screen): UnitOffEvpLvgWTempSen

Trigger: Sensor shorted or open


Reset: This alarm can be cleared manually via the unit controller keypad or BAS command if the sensor is back in range.

Entering Evaporator Water Temperature Sensor FaultAlarm description (as shown on screen: UnitOffEvpEntWTempSen


Action Taken: Normal stop of all circuits


AC Comm FailureAlarm description (as shown on screen): AlrmLimCtrlrCommFail

Trigger: Communication with the I/O extension module has failed.


Reset:This alarm can be cleared manually via the keypad or BAS command when communicationbetween main controller and the extension module is working for 5 seconds.

Outdoor Air Temperature Sensor FaultAlarm description (as shown on screen): UnitOffAmbTempSen


Action Taken: Normal shutdown of all circuits


External AlarmAlarm description (as shown on screen): UnitOffExternal Alarm

Trigger: External Alarm/Event input is open for at least 5 seconds and external fault input is configured as an alarm

Action Taken: Rapid stop of all circuits

Reset: Auto clear when digital input is closed

Emergency Stop AlarmAlarm description (as shown on screen): UnitOffEmergencyStop

Trigger: Emergency Stop input is open

Action Taken: Rapid stop of all circuits

Reset: This alarm can be cleared manually via the keypad or via BAS command if the emergency switch is closed.

Unit Problem AlarmsThe following unit events are logged in the warning log with a time stamp.

Evaporator Pump #1 FailureAlarm description (as shown on screen): EvapPmp1Fault

Trigger: Unit is configured with primary and backup pumps, pump #1 is running, and the pump control logic switches to pump #2

Action Taken: Backup pump is used

Reset: This alarm can be cleared manually via the keypad or BAS command

Evaporator Pump #2 FailureAlarm description (as shown on screen): EvapPmp2Fault

Trigger: Unit is configured with primary and backup pumps,

alarMs and evenTs


pump #2 is running, and the pump

control logic switches to pump #1

Action Taken: Backup pump is used

Reset: This alarm can be cleared manually via the keypad or BAS command

Unit Warning AlarmsThe following unit events are logged in the warning log with a time stamp.

External EventAlarm description (as shown on screen): UnitExternalEvent

Trigger: External Alarm/Event input is open for at least 5 seconds and external fault is configured as an alarm

Action Taken: None

Reset: Auto clear when digital input is closed

Bad Demand Limit InputAlarm description (as shown on screen): BadDemandLimitInput

Trigger: Demand limit input out of range and demand limit is enabled. For this alarm out of range is considered to be a signal less than 3mA or more than 21mA

Action Taken: None

Reset: Auto clear when demand limit disabled or demand limit input back in range for 5 seconds

Bad LWT Reset InputAlarm description (as shown on screen): BadSetptOverrideInput

Trigger: LWT reset input out of range and LWT reset = 4-20mA. For this alarm out of range is considered to be a signal less than 3mA or more than 21mA.

Action Taken: None

Reset: Auto clear when LWT reset is not 4-20mA or LWT reset input back in range for 5 seconds

Circuit FaultsAll circuit stop alarms require shutdown of the circuit on which they occur. Rapid stop alarms do not trigger a pumpdown before shutting off. All other alarms will initiate a pumpdown.

When one or more circuit alarms are active and no unit alarms are active, the alarm output will be switched on and off on 5 second intervals.

Alarm descriptions apply to all circuits, the circuit number is represented by ‘n’ in the description.

Phase Volts (PVM)/GFP FaultAlarm description (as shown on screen): UnitOffPhaseVoltage or CnOff PhaseVoltage

Trigger: Power configuration = Multi Point and PVM/GFP Enable = Yes and Circuit PVM/GFP Input is open

Action Taken: Rapid stop unit or circuit

Rese: Auto reset when Circuit PVM/GFP Input is closed

OR PVM/GFP Enable = No OR Power Configuration = Single Point for at least 5 seconds

Low Evaporator PressureAlarm description (as shown on screen): CnCmpnOffEvpPressLo

Trigger 1:

This alarm will trigger when Freeze time is exceeded and Circuit State = Run.

Freezestat logic allows the circuit to run for varying times at low pressures. The lower the pressure, the shorter the time the compressor can run. This time is calculated as follows:

Freeze error = Low Evaporator Pressure Unload – Evaporator Pressure

Freeze time = 70 – 0.906 x freeze error, limited to a range of 20-70 seconds

When the evaporator pressure goes below the Low Evaporator Pressure Unload set point, a timer starts. If this timer exceeds the freeze time, then a freezestat trip occurs. If the evaporator pressure rises to the unload set point or higher, and the freeze time has not been exceeded, the timer will reset.

Trigger 2:

This alarm will trigger if Evaporator Press is less than -69 kPa (-10 PSI) for longer than one second.

For either trigger condition, the alarm cannot trigger if the evaporator pressure sensor fault is active..

Action Taken: Rapid stop circuit

Reset: This alarm can be cleared manually via the Unit Controller keypad if the evaporator pressure is above -69 kPa (-10 PSI).

Low Pressure Start FailAlarm description (as shown on screen): CnOffStrtFailEvpPrLo

Trigger: Circuit state = start for time greater than Startup Time set point.



Mechanical Low Pressure SwitchAlarm description (as shown on screen): CnCmpnOffMechPressLo

Trigger: Circuit state = start for time greater than Startup Time set point.


Reset: This alarm can be cleared manually via the Unit Controller keypad if the Mechanical Low Pressure Switch Input is high .


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High Condenser PressureAlarm description (as shown on screen): CnCmpnOffCondPressHi

Trigger: Condenser Saturated Temperature > Max Saturated Condenser Value for time > High Cond Delay set point.


Reset: This alarm can be cleared manually via the unit controller keypad.

Low Pressure RatioAlarm description (as shown on screen):

CnCmpnOffPrRatioLo

Trigger: Pressure ratio is less than calculated limit for longer than the Low Pressure Ratio Delay set point after circuit startup has completed. The calculated limit will vary from 1.4 to 1.8 as the compressor’s capacity varies from 10% to 100%.

Pressure ratio is calculated as shown with pressures in kPa:

Ratio = (Condenser Pressure + 101.325)/(Evaporator Pressure + 101.325)

Pressure ratio limit is calculated as:

Limit = 0.00444(capacity) + 1.35556

Action Taken: Normal shutdown of circuit


Mechanical High Pressure (MHP) SwitchAlarm description (as shown on screen): CnCmpnOffMechPressHi

Trigger: Mechanical High Pressure switch input is low AND Emergency Stop Alarm is not active. (opening emergency stop switch kills power to MHP switches).


Reset: This alarm can be cleared manually via the unit controller keypad if the MHP switch input is high

High Discharge TemperatureAlarm description (as shown on screen): CnCmpn OffDischTmpHi

Trigger: Discharge Temperature > High Discharge Temperature set point AND compressor is running. Alarm cannot trigger if temperature sensor fault is active


Reset: This alarm can be cleared manually via the unit controller keypad or BAS command

High Oil Pressure DifferenceAlarm description (as shown on screen): CnCmpn OffOilPrDiffHi

Trigger: Circuit is in the Run state and Oil Pressure Differential > High Oil Pressure Differential set point for a time greater than Oil Pressure Differential Delay.


Reset: This alarm can be cleared manually via the unit controller keypad or BAS command

Compressor Starter FaultAlarm description (as shown on screen): CnCmpn OffStarterFlt

Trigger:

If starter type = Benshaw or Schneider: any time starter fault input is open

If starter type = wye delta: compressor has been running for at least 14 seconds and starter fault input is open for at least 3 seconds



High Motor TemperatureAlarm description (as shown on screen): CnCmpnOffMotorTempHi

Trigger:

Motor Protection input is open for longer than two seconds.


Reset: This alarm can be cleared manually via the unit controller keypad after Motor Protection input has been closed for at least 5 minutes.

Low OAT Restart FaultAlarm description (as shown on screen): CnCmpnOffNbrRestarts

Trigger: Circuit has failed three low OAT start attempts



No Pressure Change After StartAlarm description (as shown on screen): CnOffNoPressChgStart

Trigger: After start of compressor, at least a 1 psi drop in evaporator pressure OR 5 psi increase in condenser pressure has not occurred after 40 seconds.



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No Pressure At StartupAlarm description (as shown on screen): CnOffNoPressAtStart

Trigger: Either Evap Pressure < 35 kPa (5.1 psi) OR Cond Pressure < 35 kPa (5.1 psi) AND Compressor start requested AND circuit does not have a fan VFD


Reset: This alarm can be cleared manually via the unit controller keypad or BAS command if Evap Pressure > 35 kPa (5.1 psi) and Cond Pressure > 35 kPa (5.1 psi), or circuit is configured for fan VFD.

Low Discharge SuperheatAlarm description (as shown on screen): CnCmpn OffLowDischSHLo

Trigger: If all of the following are true for at least 20 minutes, the alarm is triggered:

• Circuit state is run• Liquid injection is off• DSH is less than the Low DSH Limit set pointAction Taken: Normal shutdown of circuit


Power Loss While RunningEvent description (as shown on screen): CnPwrLossRun

Trigger: Compressor is running when controller loses power

Action Taken: N/A

Reset: N/A

High Motor Amps Alarm description (as shown on screen): CnCmp1 OffMtrAmpsHi

Trigger: Alarm is triggered if unit has compressor VFD’s, compressor is running, and motor current exceeds the high motor amps shutdown value.

Action Taken:Rapid stop circuit

Reset: This alarm can be cleared manually via the Unit Controller keypad or via BAS command.

Compressor VFD Temperature HighAlarm description (as shown on screen): CnCmpnOffVfdTempHi

Trigger: Alarm is triggered if unit has compressor VFD’s, compressor is running, and VFD heatsink temperature (as reported via modbus) exceeds 120°C (248°F) for at least five seconds.



Compressor VFD Communication Failed Alarm description (as shown on screen): CnCmpnOffVfdCommFail

Trigger: Unit has compressor VFD’s and there is either a modbus configuration error or there are 10 consecutive read or write errors.



Compressor VFD Fault Alarm description (as shown on screen): CnCmpnOffVfdFault

Trigger: Fault flag from VFD is set - VFD is sending a fault status to controller via modbus communications



CC Comm FailureAlarm description (as shown on screen): CnOffCmpCttrlComFail

Trigger: Compressor is running when controller loses power

Action Taken: N/A

Reset: This alarm can be cleared manually via the keypad or BAS command when communication between main controller and the extension module is working for 5 seconds.

CC Comm FailureAlarm description (as shown on screen): CnOffCmpCtrlrComFail




FC Comm Failure Circuit 1 and 2Alarm description (as shown on screen): C1C2OffFnCtlrComFail

Trigger: [Circuit 1 or Circuit 2 Number of Fans > 6 OR PVM Config = Multi Point] and communication with the I/O extension module has failed.

Action Taken: Rapid stop circuit 1 and 2



alarMs and evenTs

FC Comm Failure Circuit 3Alarm description (as shown on screen): C3OffFnCtlrComFail

Trigger: Chiller is configured with three circuits and communication with the I/O extension module has failed.

Action Taken: Rapid stop of circuit 3


FC Comm Failure Circuit 3/4Alarm description (as shown on screen): C3C4OffFnCtlrComFail

Trigger: Chiller is configured with three circuits , circuit 3 number of fans > 6, and communication with the I/O extension module has failed.

Action Taken: Rapid stop of circuit 3


EEXV Comm Failure NAlarm description (as shown on screen): CnOffEXVCtrlrComFail




Evaporator Pressure Sensor FaultAlarm description (as shown on screen): CnCmpnOffEvpPress Sen

Trigger: When sensor is shorted or open, the alarm should be triggered, with the following exception. If the evaporator LWT is 30°C (86°F) or higher, the fault should not be triggered due to the input signal reading too high unless the circuit has been running for longer than 90 seconds


Reset: This alarm can be cleared manually via the unit controller keypad or BAS command if the sensor is back in range

Condenser Pressure Sensor FaultAlarm description (as shown on screen): CnCmpnOffCondPressSen



Reset: This alarm can be cleared manually via the unit controller keypad or BAS if the sensor is back in range.

Oil Pressure Sensor FaultAlarm description (as shown on screen): CnCmpnOffOilFeedSen




Suction Temperature Sensor FaultAlarm description (as shown on screen): CnCmpnOffSuctTempSen

Trigger: Sensor shorted or open.



Discharge Temperature Sensor FaultAlarm description (as shown on screen): CnCmpnOffDishTmpSen




Slide Position Sensor FaultAlarm description (as shown on screen): CnCmpnOffSlidePosSen

Trigger: Sensor reads less than 1mA or higher than 23mA, unit is configured for use with slide position sensors, and circuit capacity control is set to auto


Reset: This alarm can be cleared manually via the Unit Controller keypad if the trigger conditions no longer exist.

Low Remote Evaporator pressureAlarm description (as shown on screen): CnCmpn OffMechPressLo

Trigger: [Freezestat trip AND Circuit State = Run OR Evaporator Press , -10 psi

When the remote evaporator pressure goes below the Low Remote Evaporator Pressure Unload set point, a timer starts. If this timer exceeds the freeze time, then a freezestat trip occurs. If the evaporator pressure rises to the unload set point or higher, and the freeze time has not been exceeded, the timer will reset.


Reset: This alarm is cleared manually if the evaporator pressure is above 10 psi.

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Failed PumpdownEvent description (as shown on screen): CnFailedPumpdown

Trigger: Circuit state = pumpdown for time > Pumpdown Time set point

Action Taken: Shut down circuit

Reset: N/A

EventsSituations may arise that require some action from the chiller or that should be logged for future reference, but aren’t severe enough to track as alarms. These events are stored in a log separate from alarms. This log shows the time and date of the latest occurrence, the count of occurrences for the current day, and the count of occurrences for each of the previous 7 days.

Unit Power RestoreTrigger: Unit controller is powered up.

Action Taken: Non

Reset: N/A

Low Evaporator Pressure - HoldTrigger: This event will trigger when the unit mode is cool, the circuit state is run, and evaporator pressure drops below the Low Evaporator Pressure Hold set point.

If the unit does not have compressor VFD’s, the hold cannot be triggered for 60 seconds following the capacity change of the compressor from 50% to 60% or from 60% to 50%.

Action Taken: Compressor will not be able to increase in capacity.

Reset: This event is cleared when the evaporator pressure rises at least 14 kPa (2.03 PSI) above the Low Evaporator Pressure Hold set point. It is also cleared if the circuit is no longer in the run state or the unit operating mode is changed to Ice.

Low Evaporator Pressure - UnloadTrigger: This event will trigger when the unit mode is cool, the circuit state is run, and evaporator pressure drops below the Low Evaporator Pressure Unload set point.

If the unit does not have compressor VFD’s, the unload cannot be triggered for 60 seconds following the capacity change of the compressor from 50% to 60% or from 60% to 50%.

Action Taken: If the unit does not have compressor VFD’s, the compressor capacity will decrease by one step every 5 seconds until the evaporator pressure rises up to the Low Evaporator Pressure Unload set point or higher.

If the unit has compressor VFD’s, the compressor capacity will decrease by one step every 4 seconds until the evaporator pressure rises up to the Low Evaporator Pressure Unload set point or higher.

Reset: This event is cleared when the evaporator pressure rises at least 14 kPa (2.03 PSI) above the Low Evaporator Pressure Hold set point. It is also cleared if the circuit is no longer in the run state or the unit operating mode is changed to Ice.

High Condenser Pressure - HoldTrigger: This event will trigger when the circuit state is run and saturated condenser temperature exceeds the high saturated condenser hold value.

Action Taken: Compressor will not be able to increase in capacity

Reset: This event is cleared when the saturated condenser temperature drops at least 5.6°C (10.08°F) below the high saturated condenser hold value. It is also cleared if the circuit is no longer in the run state.

High Condenser Pressure - UnloadTrigger: This event will trigger when the circuit state is run and saturated condenser temperature exceeds the high saturated condenser unload value.

Action Taken: The compressor capacity will decrease by one step every 5 seconds until the saturated condenser temperature drops down to the high saturated condenser unload value or lower.

Reset: This event is cleared when the saturated condenser temperature drops at least 5.6°C (10.08°F) below the high saturated condenser unload value. It is also cleared if the circuit is no longer in the run state.

High Motor Amps – Hold Trigger: This event will trigger if the unit has compressor VFD’s, the compressor is running, and the motor current exceeds the high motor amps hold value.

Action Taken: Compressor n will not be able to increase in capacity.

Reset: This event is cleared when the motor current drops below the high motor amps hold value for at least 10 seconds. It is also cleared if the compressor is no longer running.

High Motor Amps - Unload Trigger: This event will trigger if the unit has compressor VFD’s, the compressor is running, and the motor current exceeds the high motor amps unload value or the motor current exceeds the high motor amps delayed unload value for at least 20 seconds.

Action Taken:The compressor capacity will decrease by one step every 5 seconds.

Reset: This event is cleared when the motor current drops below the high motor amps delayed unload value for at least 3 seconds. It is also cleared if the compressor is no longer running.


alarMs and evenTs

Part Load Shutdown Trigger: All of the following are required to trigger this event:

• unit is configured with glycol• condenser saturated temperature > (evaporator saturated

temperature x 2) + 68.3• circuit capacity < 50%• evaporator saturated temperature less than -5°C (23°F)• circuit has been running at least 10 minutes• at least 10 minutes has passed since any other circuit

shut downOnce the above conditions are met for at least five minutes, the event is triggered.

Action Taken:Normal shutdown of circuit. If two circuits satisfy these conditions at the same time, then the one that should be next off by the normal sequencing rules will shut down.

Reset: N/A

Alarm LoggingWhen an alarm occurs, the alarm type, date, and time are stored in the active alarm buffer corresponding to that alarm (viewed on the Alarm Active screens) also in the alarm history buffer (viewed on the Alarm Log screens). The active alarm buffers hold a record of all current alarms.

A separate alarm log stores the last 25 alarms to occur. When an alarm occurs, it is put into the first slot in the alarm log and all others are moved down one, dropping the last alarm. The date and time the alarm occurred are stored in the alarm log.

Event LogThis menu is accessed through the alarm menu. It gives access to the event occurrence over a seven day period and the last occurrence with time and date for:

• Unit Power Restore• Low Pressure Hold• Low Pressure Unload• High Pressure Hold• High Pressure Unload• High Current Hold• High Current Unload

usIng The ConTroller



Unit Controller OperationFigure 89: Unit Controller

The keypad/display consists of a 5-line by 22-character display, three buttons (keys) and a “push and roll” navigation wheel. There is an Alarm Button, Menu (Home) Button, and a Back Button. The wheel is used to navigate between lines on a screen (page) and to increase and decrease changeable values when editing. Pushing the wheel acts as an Enter Button and will jump from a link to the next set of parameters.

Figure 90: Typical Screen

♦6 View/Set Unit 3Status/Settings >Set Up >Temperature >Date/Time/Schedule >

Generally, each line on the display contains a menu title, a parameter (such as a value or a set point), or a link (which will have an arrow in the right of the line) to a further menu.

The first line visible on each display includes the menu title and the line number to which the cursor is currently “pointing”, in the above case 3, Temperature.

The left most position of the title line includes an “up” arrow ▲ to indicate there are lines (parameters) “above” the currently displayed line; and/or a “down” arrow ▼ to indicate there are

lines (parameters) “below” the currently displayed items or an “up/down” arrow to indicate there are lines “above and below” the currently displayed line. The selected line is highlighted.

Each line on a screen can contain status-only information or include changeable data fields (set points).

A line in a menu may also be a link to further menus. This is often referred to as a jump line, meaning pushing the navigation wheel will cause a “jump” to a new menu. An arrow is displayed to the far right of the line to indicate it is a “jump” line and the entire line is highlighted when the cursor is on that line. NOTE: Only menus and items that are applicable to the

specific unit configuration are displayed.

This manual includes information relative to the operator level of parameters; data and set points necessary for the every day operation of the chiller. There are more extensive menus available for the use of service technicians.



Navigating When power is applied to the control circuit, the controller screen will be active and display the Home screen, which can also be accessed by pressing the Menu Button The navigating wheel is the only navigating device necessary, although the MENU, ALARM, and BACK buttons can provide shortcuts as explained later.

PasswordsEnter passwords from the Main Menu:

• Enter Password links to the Entry screen, which is an editable screen. So pressing the wheel goes to the edit mode where the password (5321 for operators) can be entered. The first (*) will be highlighted, rotate the wheel clockwise to the first number and set it by pressing the wheel. Repeat for the remaining three numbers. The password will time out after 10 minutes with no keypad activity, and is cancelled if a new password is entered or the control powers down.

• Not entering a password allows access to a limited number of parameters (with asterisks) as shown in Figure 93.

Figure 91: Password Menu

Main Menu 1/3Enter Password >Unit StatusOff: Unit SwACTIVE SETPT 44.6°F

Entering an invalid password has the same effect as not entering a password.

Once a valid password has been entered, the controller allows further changes and access without requiring the user to enter a password until either the password timer expires or a different password is entered. The default value for this password timer is 10 minutes.

Navigation ModeWhen the navigation wheel is turned clockwise, the cursor moves to the next line (down) on the page. When the wheel is turned counter-clockwise the cursor moves to the previous line (up) on the page. The faster the wheel is turned the faster the cursor moves. Pushing the wheel acts as an “Enter” button.

Three types of lines exist:

• Menu title, displayed in the first line as in Figure 91. • Link (also called Jump) having an arrow ( > ) in the right

of the line and used to link to the next menu.• Parameters with a value or adjustable set point.

For example, “Time Until Restart” jumps from level 1 to level 2 and stops there.

When the Back Button is pressed the display reverts back to the previously displayed page. If the Back button is repeatedly pressed the display continues to revert one page back along

the current navigation path until the “main menu” is reached.

When the Menu (Home) Button is pressed the display reverts to the “main page.”

When the Alarm Button is depressed, the Alarm Lists menu is displayed.

Edit ModeThe Editing Mode is entered by pressing the navigation wheel while the cursor is pointing to a line containing an editable field. Once in the edit mode pressing the wheel again causes the editable field to be highlighted. Turning the wheel clockwise while the editable field is highlighted causes the value to be increased. Turning the wheel counter-clockwise while the editable field is highlighted causes the value to be decreased. The faster the wheel is turned the faster the value is increased or decreased. Pressing the wheel again cause the new value to be saved and the keypad/display to leave the edit mode and return to the navigation mode.

A parameter with an “R” is read only; it is giving a value or description of a condition. An “R/W indicates a read and/or write opportunity; a value can be read or changed (providing the proper password has been entered).

Link and parameter access is indicated for the various password levels with one column for each level. Column headings for the password levels are as follows and shown in Figure 92:

N = No password

O = Operator level

T = Technician level

D = Daikin Applied factory service technician level

Screen navigational links:

• For each link on a screen, the linked screen is indicated in the rightmost column.

• For each screen, the screen(s) from which you can navigate to it is also shown in parentheses after the screen identifier.

• For most circuit or compressor level parameters, there is a link to a screen that shows the values for all circuits/compressors which is indicated in the ‘Links to screen’ column as *.

For many of the circuit level screens, only one screen will be shown in this section. The same set of screens exists for each circuit and compressor. These screens are the ones with ‘Cx’ and Cmpx’ identifiers.

Figure 92: Example of Screen Menu With Access Levels



Figure 93: HMI Keypad Navigation


opTIonal reMoTe user InTerfaCe


The optional remote user interface is a remote control panel that mimics operation of the controller located on the unit. Up to eight Pathfinder® units can be connected to it and selected on the screen. It provides HMI (Human Machine Interface) within a building, the building engineer’s office for example, without going outdoors to the unit.

It can be ordered with the unit and shipped loose as a field installed option. It can also be ordered anytime after chiller shipment and mounted and wired on the job as explained on

the following page. The remote panel is powered from the unit and no additional power supply is required.

All viewing and setpoint adjustments available on the unit controller are available on the remote panel. Navigation is identical to the unit controller as described in this manual.

The initial screen when the remote is turned on shows the units connected to it. Highlight the desired unit and press the wheel to access it. The remote will automatically show the units attached to it, no initial entry is required.

Figure 94: Remote User Interface Layout

Menu Button

Alarm Button Back Button Push and Roll w/ Flashing Red Alarm Light Navigating Wheel




opTIonal CoMpressor vfd


An optional variable frequency drive (VFD) for each unit compressor provides compressor speed reduction to the extent permissible by chiller load and discharge pressure requirements. The speed reduction provides significant energy savings over fixed-speed compressors.

The VFD has its own controller that monitors VFD operation, provides safety shutdowns and sends data to the chiller controller. VFD alarms and faults are handled the same as chiller related faults. See page 137 for information on viewing and clearing them.

WARNINGAccess to the VFD enclosure is by factory-trained technicians only. Unauthorized entry can result in property damage, severe personal injury, or death.

Faults and Minor Faults/AlarmsWhen the drive detects a fault:

• The VFD sends a message to the chiller controller regarding the fault.

• The chiller controller displays a hexadecimal number code that identifies specific VFD faults listed in Table 88.

• An alarm bell icon will be displayed in the upper right-hand corner of all controller screens including the optional remote user interface panel’s screens.

• The remote alarm circuit will be energized (wiring to a remote alarm device is optional)

• The drive output is interrupted and the compressor coasts to a stop.

• The drive is inoperable until the fault is corrected.When the drive detects an alarm or minor fault:

• No message is sent to the chiller controller since no operator action is required.

• The drive continues running the compressor.

Navigating VFD Fault CodesWhen a VFD fault condition is detected, the VFD hexadecimal fault code will appear on the chiller controller display (HMI) as a hexadecimal code, for example; 0002H. The faults that can be corrected by the operator without accessing the VFD interior are listed in Table 88. Note the fault code and contact Daikin Applied factory service if unsuccessful in clearing the listed faults or for assistance with unlisted faults.

Table 88: Fault Code, Causes and Possible Solutions

Hexa-decimal Code VFD HMI Display Fault Name, Cause Possible Solutions0083H CPF02 A/D Conversion Error Cycle power to drive (See notes)0095H CPF20,CPF21 Control Circuit Error Cycle power to drive (See notes)0097 CPF22 Hybrid IC Error Cycle power to drive (See notes)0019H dEv Speed Deviation Reduce compressor load001FH Err EEPROM Write Error Cycle power to drive (See notes)

0007H oC OvercurrentMeasure the current going to the compressor. Determine if there is a sudden fluctuation in current. Reduce load

0106H to0107H oFA03 to oFA06 Option Card Error Cycle power to drive (See notes)0111H, 0112H oFA10, oFA11 Option Card Error Cycle power to drive (See notes)0131H to 0139H oFA30 to oFA43 Option Card Error Cycle power to drive (See notes)0205H to 0211H oFb03 to oFb11 Option Card Error Cycle power to drive (See notes)0212H to0217H oFb12 to oFb17 Option Card Error Cycle power to drive (See notes)0231H to 0239H, 023AH to 023EH

oFb30 to oFb43 Option Card Error Cycle power to drive (See notes)

0305H,0306H oFC05, oFC06 Option Card Error Cycle power to drive (See notes)

0009H oH Heatsink OverheatVerify ambient temperature within specification. Remove any adjacent heat producing equipment. Decrease load

000AH oH1 Heatsink Overheat Verify ambient temperature within specification. Remove any adjacent heat producing equipment. Decrease load

000BH oL1 Motor OverloadReduce load. Check for power supply phase loss/fluctuation. Check motor current against nameplate.

000CH oL2 Drive Overload Reduce load. Check for power supply phase loss/fluctuation.0008H ov Overvoltage DC Bus Check motor wiring for ground faults. Check input voltage.000FH rr Braking Transistor Failed Cycle power to drive (See notes)

0002H Uv1 DC Bus UndervoltageCheck for loose power connections. Check supply voltage. Cycle power to drive (See notes)

0003F Uv2 Control Power Fault Cycle power to drive (See notes)0004H Uv3 Bypass Circuit Undervoltage Cycle power to drive (See notes)



NOTE: Depending on the fault type, the fault will shut down the circuit or entire unit. If a circuit is still running and on its own disconnect, it can be left running. Disconnect and then reconnect

the faulted circuit.If a circuit is still running and there is a common disconnect for the unit, pump down the running circuit, disconnect and reconnect the entire unit.

Table 89: Setpoint Changes between VFD and Non-VFD Units

Setpoint VFD Units Non-VFD UnitsLight Load Stage Down

Default 35 Default 40

Stop Delta T Default 1.5 Default 0.7Stage Up Delta T Default 0.5 Default 1.0PVM Config Default None Default Single

PointSlide Position Sensor

Default No Default Yes

Table 90: Logic Changes

Logic VFD Units Non-VFD UnitsRequirements for staging a circuit on are different

If a calculated limit for pulldown rate is exceeded when LWT error is less than 10°C, no additional circuit can start.

Has the logic outlined in original SRS, without the additional logic shown at left for VFD chillers.

Method for generating load/unload commands is different

A scaled limit on pulldown rate is used in combination with a scaled time delay between capacity changes based on LWT error.

An error accumulator using LWT error and loop pulldown rate are used. Time between capacity changes is determined by accumulator reaching limit and the time delays in individual circuits.

Pressure control target is different

Always controls to 350 kPa other than after transition from SSH control

Allows pressure target to vary in order to maintain DSH (12 to 22 °C)

Limits of SSH target are different

SSH target varies from 3.4 to 7.0 °C (as DSH varies from 18 to 12 °C)

SSH target varies from 2.8 to 5.5 °C (as DSH varies from 17 to 12 °C)

Triggers for transition from pressure control to SSH control are different.

Circuit running for 3 minutes and DSH >= 12 deg C for 1 minute or SSH < SSH target plus 1 degree C.

Low Pressure Unload not active and LWT <= 15.5°c and SSH >= SSH target and DSH >= 12°C for at least 3 minutes

Triggers for transition from SSH control to pressure control are different.

Evap Pressure > 350 kPa for 60 seconds LWT > 17°C or DSH < 12°C



Control PanelThe control panel for VFD units is different from non-VFD units due to the space requirements of the drive.

Figure 95: Upper Section of the VFD Control Panel Section

Figure 96: Lower Section of the VF Control Panel Section

opTIonal power faCTor CorreCTIon CapaCITors


opTIonal power faCTor CorreCTIon CapaCITors

Optional power factor correction capacitors (PFCC) located in an electrical panel may have been ordered with the chiller. If so, there is one panel per compressor and they are mounted on the side base rail near the evaporator.The panel has no moving parts and no routine maintenance is required. There is a fuse for each phase, each with a blown fuse indicator and associated red indicating light.

A fuse failure will cause a phase fault and the unit will experience a rapid shutdown from the Phase-Voltage Monitor for wye-delta starters or internally within solid state starters. Units with compressor VFDs will not normally have PFCCs.

Before replacing the fuse, the cause for failure must be determined and corrected. The chiller will not run with a blown circuit fuse.

WARNINGDisconnect power from the unit before opening the capacitor panel. After disconnecting, allow ten minutes for capacitor to discharge and check for no capacitor voltage with a voltmeter before attempting any service work.

Failure to do so can result in property damage, severe personal injury, or death.

Figure 97: Power Factor Correction Capacitor Panel Layout


sTarTup and shuTdown


NOTICEDaikin Applied service personnel or factory authorized service agency must perform initial startup in order to activate warranty.

CAUTIONMost relays and terminals in the unit control center are powered when S1 is closed and the control circuit disconnect is on. Therefore, do not close S1 until ready for startup or the unit may start unintentionally and possibly cause equipment damage.

Seasonal Startup1. Double check that the discharge shutoff valve and the

optional compressor suction butterfly valves are open.

2. Check that the manual liquid-line shutoff valves at the outlet of the subcooler coils are open.

3. Check the leaving chilled water temperature set point on the MicroTech® III controller to be sure it is set at the desired chilled water temperature.

4. Start the auxiliary equipment for the installation by turning on the time clock, and/or remote on/off switch, and chilled water pump.

5. Check to see that pumpdown switches Q1 and Q2 (and Q3) are in the “Pumpdown and Stop” (open) position. Throw the S1 switch to the “auto” position.

6. Under the “Control Mode” menu of the keypad, place the unit into the automatic cool mode.

7. Start the system by moving pumpdown switch Q1 to the “auto” position.

8. Repeat step 7 for Q2 (and Q3).

Temporary ShutdownMove pumpdown switches Q1 and Q2 to the “Pumpdown and Stop” position. After the compressors have pumped down, turn off the chilled water pump.

CAUTIONDo not turn the unit off using the “Override Stop” switch, without first moving Q1 and Q2 (and Q3) to the “Stop” position, unless it is an emergency, as this will prevent the unit from going through a proper shutdown/pumpdown sequence, resulting in possible equipment damage.

CAUTIONThe unit has a one-time pumpdown operation. When Q1 and Q2 are in the “Pumpdown and Stop” position the unit will pump down once and not run again until the Q1 and Q2 switches are moved to the auto position. If Q1 and Q2 are in the auto position and the load has been satisfied, the unit will go into one-time pumpdown and will remain off until the MicroTech® III control senses a call for cooling and starts the unit.

CAUTIONWater flow to the unit must not be interrupted before the compressors pump down to avoid freeze-up in the evaporator. Interruption will cause equipment damage.

CAUTIONIf all power to the unit is turned off, the compressor heaters will become inoperable. Once power is resumed to the unit, the compressor and oil separator heaters must be energized a minimum of 12 hours before attempting to start the unit.

Failure to do so can damage the compressors due to excessive accumulation of liquid in the compressor.

Startup After Temporary Shutdown1. Insure that the compressor and oil separator heaters

have been energized for at least 12 hours prior to starting the unit.

2. Start the chilled water pump.

3. With System switch Q0 in the “on” position, move pumpdown switches Q1 and Q2 to the “auto” position.

4. Observe the unit operation until the system has stabilized.

Extended (Seasonal) Shutdown1. Move the Q1 and Q2 (and Q3) switches to the manual

pumpdown position.

2. After the compressors have pumped down, turn off the chilled water pump.

3. Turn off all power to the unit and to the chilled water pump.

4. If fluid is left in the evaporator, confirm that the evaporator heaters are operational.

5. Move the emergency stop switch S1 to the “off” position.

6. Close the compressor discharge valve and the optional compressor suction valve (if so equipped) as well as the liquid line shutoff valves.

7. Tag all opened compressor disconnect switches to warn against startup before opening the compressor suction valve and liquid line shutoff valves.

8. If glycol is not used in the system, drain all water from the unit evaporator and chilled water piping if the unit is to be shutdown during winter and temperatures below -20°F can be expected. The evaporator is equipped with heaters to help protect it down to -20°F. Chilled water piping must be protected with field-installed protection. Do not leave the vessels or piping open to the atmosphere over the shutdown period.

9. Do not apply power to the evaporator heaters if the system is drained of fluids as this can cause the heaters to burn out.



Startup After Extended (Seasonal) Shutdown

1. With all electrical disconnects locked and tagged out, check all screw or lug-type electrical connections to be sure they are tight for good electrical contact.

DANGERLOCK AND TAG OUT ALL POWER SOURCES WHEN CHECKING CONNECTIONS. ELECTRICAL SHOCK WILL CAUSE SEVERE PERSONAL INJURY OR DEATH.

2. Check the voltage of the unit power supply and see that it is within the ±10% tolerance that is allowed. Voltage unbalance between phases must be within ±3%.

3. See that all auxiliary control equipment is operative and that an adequate cooling load is available for startup.

4. Check all compressor flange connections for tightness to avoid refrigerant loss. Always replace valve seal caps.

5. Make sure system switch Q0 is in the “Stop” position and pumpdown switches Q1 and Q2 are set to “Pumpdown and Stop”, throw the main power and control disconnect switches to “on.” This will energize the crankcase heaters. Wait a minimum of 12 hours before starting up unit. Turn compressor circuit breakers to “off” position until ready to start unit.

6. Open the optional compressor suction butterfly as well as the liquid line shutoff valves, compressor discharge valves.

7. Vent the air from the evaporator water side as well as from the system piping. Open all water flow valves and start the chilled water pump. Check all piping for leaks and recheck for air in the system. Verify the correct flow rate by taking the pressure drop across the evaporator and checking the pressure drop curves beginning on page 82.

The following table gives glycol concentrations required for freeze protection.

Table 91: Freeze Protection Temperature

°F (°C)

Percent Volume Glycol Concentration Required

For Freeze Protection For Burst Protection

Ethylene Glycol

Propylene Glycol

Ethylene Glycol

Propylene Glycol

20 (6.7) 16 18 11 12

10 (-12.2) 25 29 17 20

0 (-17.8) 33 36 22 24

-10 (-23.3) 39 42 26 28

-20 (-28.9) 44 46 30 30

-30 (-34.4) 48 50 30 33

-40 (-40.0) 52 54 30 35

-50 (-45.6) 56 57 30 35

-60 (-51.1) 60 60 30 35

NOTE: These values are examples only and cannot be appropriate to every situation. Generally, for an extended margin of protection, select a temperature at least 10°F lower than the expected lowest ambient temperature. Inhibitor levels should be adjusted for solutions less than 25% glycol.Glycol of less than 25% concentration is not recommended, unless inhibitors are adjusted, because of the potential for bacterial growth and loss of heat transfer efficiency.


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GeneralOn initial startup and periodically during operation, it will be necessary to perform certain routine service checks. Among these are checking the liquid line sight glasses, and the compressor oil level sight glass. In addition, check the MicroTech® III controller temperature and pressure readings with gauges and thermometers to see that the unit has normal condensing and suction pressure and superheat and subcooling readings.

A Periodic Maintenance Log is located at the end of this manual. It is suggested that the log be copied and a report be completed on a regular basis. The log will serve as a useful tool for a service technician in the event service is required.

Initial startup date, vibration readings, compressor megger readings and oil analysis information should be kept for reference base-line data.

Vibration Monitoring (Optional)Vibration readings are often used as an indicator of a possible problem requiring maintenance. If vibration monitoring is part of the site PM program, the compressor can be checked with a vibration analyzer on an annual basis. When doing the annual testing, the load should be maintained as closely as possible to the load of the original test. The initial vibration analysis test provides a benchmark of the compressor, and when performed routinely, can give a warning of impending problems.

LubricationThe fan motor bearings are permanently lubricated. No further lubrication is required. Excessive fan motor bearing noise is an indication of a potential bearing failure.

POE type oil is used for compressor lubrication. This type of oil is extremely hygroscopic which means it will quickly absorb moisture if exposed to air and form acids that can be harmful to the chiller. Avoid prolonged exposure of refrigerant to the atmosphere to prevent this problem. For more details on acceptable oil types, contact your Daikin Applied service representative.

CAUTIONPOE oil must be handled carefully using proper protective equipment (gloves, eye protection, etc.). The oil must not come into contact with certain polymers (e.g. PVC) as it may absorb moisture from this material. Also, do not use oil or refrigerant additives to the system.

It is important that only the manufacturer’s recommended oil be used. Acceptable POE oil types are:

• CPI/Lubrizol Emkarate RL68H• Exxon/Mobil EAL Arctic 68• Hatcol 3693• Everest 68

The compressor oil heater is 250 watts and is on when the compressor is off and off when it is on.

Oil Filter Removal and Renewal

Prior to this procedure, pump out the compressor; isolate the electrical supply to the control panels and compressor motor terminal.

WARNINGAfter the compressor has been pumped down and isolated, the oil contained inside the filter housing will remain hot enough to cause burns for some time afterwards. Always allow sufficient time for the oil to cool down so that it is cool enough not to be a danger when drained off (less than 35 °C is recommended). Severe injury from burns can result.

Figure 98: Oil Filter Location

Figure 99: Oil Filter Housing Cover Plate

Oil filter assembly components are:

• Oil Filter - 250mm• Oil Filter Housing Cover• O-Ring – 89.5x3• O-Ring – 76.1x3.4• (6) M8 Bolts

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Disassembly Procedure1. Unscrew and remove two hex head side cover bolts 180°

apart. Insert M8 guide studs into the vacant holes.

2. Remove remaining bolts, remove oil filter housing cover.

3. Pull the oil filter off of the spigot and withdraw the oil filter from the housing and clean the housing.

4. Clean oil filter housing cover plate and all other components.

Fitting a New Oil Filter Element – ReassemblyBefore reassembly, remove any paint from joint faces. Inspect parts individually for damage, ensure they are completely clean before laying them out on a clean surface in a logical order ready for reassembly.

Use fresh refrigerant oil to lubricate parts during reassembly.

1. Install new O-rings on the oil filter housing cover.

2. Insert new oil filter into the housing, ensuring the filter sits tightly on the sealing spigot.

3. Replace the oil filter housing cover.

Electrical Terminals DANGER

Electric equipment can cause electric shock which will cause severe personal injury or death. Turn off, lock out and tag all power before continuing with following service. Panels can have more than one power source.

CAUTIONPeriodically check electrical terminals for tightness and tighten as required. Always use a back-up wrench when tightening electrical terminals.

CondensersThe condensers are air-cooled and constructed of 3/8” (9.5mm) OD internally finned copper tubes bonded in a staggered pattern into louvered aluminum fins. No maintenance is ordinarily required except the routine removal of dirt and debris from the outside surface of the fins. Daikin recommends the use of non-caustic, non-acidic cleaners available at most air conditioning supply outlets. Flush the coil from the inside out.

WARNINGUse caution when applying coil cleaners. They can contain potentially harmful chemicals. Wear breathing apparatus and protective clothing. Carefully follow the cleaner manufacturer’s MSDS sheets. Thoroughly rinse all surfaces to remove any cleaner residue. Do not damage the fins during cleaning.

If the service technician has determined that the refrigerant charge has been contaminated, the charge should be recovered and tested for contaminates or noncondensables. Appropriate actions should be taken based on testing and Clean Air Act regulations.

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Optional Compressor VFDTable 92: Compressor VFD Inspection Areas

Inspection Area

Inspection Points Corrective Action

General

Inspect equipment for discoloration from overheating or deterioration.

Replace damaged equipment as required.

Inspect for dirt, foreign particles, or dust collection on components

Inspect door seal if so equipped. Use dry air to clear foreign matter

Conductors and Wiring

Inspect wiring and connections for discoloration, damage or heat stress.

Repair or replace damaged wire.

Terminals Inspect terminals for loose, stripped, or damaged connections

Tighten loose screws and replace damaged screws or terminals.

Relays and Contactors

Inspect contactors and relay for excessive noise during operation

Check coil voltage for over or under voltage condition.

Inspect coils for signs of overheating such as melted or cracked insulation.

Replace damaged removable relays, contactors or circuit board.

Liquid Line Sight GlassObserve the refrigerant sight glasses weekly. A clear glass of liquid indicates that there is adequate refrigerant charge in the system to provide proper feed through the expansion valve.

Bubbling refrigerant in the sight glass, during stable run conditions, may indicate that there can be an electronic expansion valve (EXV) problem since the EXV regulates refrigerant flow. Refrigerant gas flashing in the sight glass could also indicate an excessive pressure drop in the liquid line, possibly due to a clogged filter-drier or a restriction elsewhere in the liquid line.

An element inside the sight glass indicates the moisture condition corresponding to a given element color. If the sight glass does not indicate a dry condition after about 12 hours of operation, an oil acid test is recommended.

Do not use the sight glass on the EXV body for refrigerant charging. Its purpose is to view the position of the valve.

Lead-LagA feature on all Daikin Pathfinder® air-cooled chillers is a system for alternating the sequence in which the compressors start to balance the number of starts and run hours. Lead-Lag of the refrigerant circuits is accomplished automatically through the MicroTech® III controller. When in the auto mode, the circuit with the fewest number of starts will be started first. If all circuits are operating and a stage down in the number of operating compressors is required, the circuit with the most operating hours will cycle off first. The operator can override the MicroTech® III controller, and manually select the lead circuit as circuit #1, #2 or #3.

Pump OperationIt is highly recommended that the chiller unit control the chilled water pump(s). The integral chiller control system has the capability to selectively start pump A or B or automatically alternate pump selection at each start and also has pump standby operation capability.

Failure to have the chiller control the pumps may cause the following problems:

1. If any device, other than the chiller, should try to start the chiller without first starting the pumps, the chiller will lock out on the no-flow alarm and require a manual reset to restart. This can be disruptive to the normal cooling process.

2. In areas where freeze-up is a concern, the chiller control senses the chilled water temperature and turns on an immersion heater in the evaporator. It also signals the chilled water pump to start to providing flow through the evaporator and additional protection against evaporator and outside pipe freeze-up . Other pump starting methods will not automatically provide this protection. Note: the owner/operator must be aware that when the water temperature falls below freezing temperatures it is imperative NOT to stop the pump(s) as immediate freeze-up can occur.

This method of freeze protection is only effective as long as the facility and the chiller have power. The only positive freeze protection during power failures is to drain the evaporator and blow out each tube or add the appropriate concentration of glycol to the system.

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Figure 100: Preventative Maintenance Schedule

Operation Weekly Monthly (Note 1)

Annual (Note 2)

General Complete unit log and review (Note 3) X Inspect unit for loose or damaged components and visible leaks X Inspect thermal insulation for integrity X Clean and paint as required XElectrical ( * including the optional VFD) Sequence test controls * X Check contactors for pitting, replace as required * X Check terminals for tightness, tighten as necessary * X Clean control panel interior * X Clean control box fan filter * (Note 7 ) X Visually inspect components for signs of overheating * X Verify compressor and oil heater operation X Megger compressor motor XRefrigeration/Lubricant Leak test X Check liquid line sight glasses for clear flow X Check compressor oil sight glass for correct level (lubricant charge) X Check filter-drier pressure drop (Note 6) X Perform compressor vibration test (optional) X Perform oil analysis test on compressor oil XCondenser (air-cooled) Clean condenser coils (Note 4) X Check fan blades for tightness on shaft (Note 5) X Check fans for loose rivets and cracks, check motor brackets X Check coil fins for damage and straighten as necessary X

NOTE: 1 Monthly operations include all weekly operations. 2 Annual (or spring startup) operations include all weekly and monthly operations. 3 Log readings can be taken daily for a higher level of unit observation. 4 Coil cleaning can be required more frequently in areas with a high level of airborne particles. 5 Be sure fan motors are electrically locked out. 6 Replace the filter if pressure drop exceeds 20 psi. 7 The weekly fan filter cleaning schedule can be modified to meet job conditions. It is important that the filter allows full air flow.

warranTy regIsTraTIon forM (sCrew)



Part # 3306931012/11/2010 - HNAControl # - 10F-4068 1

Attention: Warranty Department Screw Compressor Equipment Warranty Registration FormDaikin This form must be completely filled out and returned to theP.O Box 2510 Staunton Warrenty Departmen within ten (10) days of start-up in order to comply Staunton, VA 24402-2510 with the terms of "Daikin Limited Product Warranty".

Note: Use OM and IMM or Later Manuals

Job Name: Startup Date:

Daikin G .O . No .: Daikin S .O . No .:

Installation Address: City/State/Zip:

Purchasing Contractor: Phone:

City/State/Zip: No . of units at site:

Unit Model No .: Serial No .:

Compressor # 1 Model . #: Compressor # 1 Serial No .:



Benshaw Control Box M/M #: Benshaw Control Box S/N #:

I . Pre Start-Up Procedure: Refer to contractors pre-start-up checklist .

DESIGN CONDITIONSCHILLER:

Entering Temp .: °F Leaving Temp .: °F GPM:

Evap . H2O Press . Drop: ft./▲P Design minimum outdoor air: °F

Pre Start-Up Checklist, All NO checks require an explanation under "Description" . Please check yes or no .YES NO

A. Is the unit free of visible shipping damage, corrosion or paint problems?

B. Is unit installed level and isolator springs properly installed (if applicable)?

C. Does the unit meet all location, installation and service clearances per IM Bulletin?

D. Are fans properly aligned and do they turn freely?

E. Are all set screws on the fans tight?

F. Does electrical service correspond to unit nameplate?

G. Has electrical service been checked for proper phasing at each circuit power terminal block?

H. Has unit been properly grounded?

I. Has a fused disconnect and fuses or breaker been sized per product manual and installed per local code?

Check, Test and Commissioning forDaikin Air-Cooled Screw Compressor

Pathfinder (AWS)




Pre Start-Up Checklist (continued)YES NO

J. Are all electrical power connections tight?

K. Have compressor heaters and oil separator heaters been been operating for 24 hours prior to start-up?

L. Does all field wiring conform to unit electrical specifications?

M. Are all system hand valves properly positioned?

N. Has a flow switch been installed properly and calibrated correctly?

O. Are there access taps in the evaporator entering and leaving chilled water lines to record water pressures and temperatures?

P. Has the chill water circuit been cleaned, flushed, and water treatment confirmed?

Q. Does the chiller water piping conform to the IM Bulletin and strainer installed before evaporator?

R. Is this job a BAS interfaced controlled site? LON BACNET MOD BUS

S. Verify building automation control sequence and describe under notes.

T. Has the unit been leak checked and any leaks found listed under notes?

U. Have outputs been tested using the service test mode?

V. Have Roto-lock fittings on compressor been checked for factory torque markings?

W. Description of unit location with respect to building structures.

Description:

MiroTech Status Check - Each reading must be verified with field provided instruments.

Software ID: MicroTech Verification

A . Leaving Evaporator Setpoint F

B . Reset Setpoint F

C . Unit Temperatures: Leaving Evaporator F F

Entering Evaporator F F

Outdoor Air F F

D . Unit Offsets: Outdoor Air Offset F

Entering Evaporator Temp Offset F

Leaving Evaporator Temp Offset F




II . Commissioning Procedure - Please refer to I .M . bulletin for operating and unit functions .Caution: Do not take readings until the system has stabilized at 75% to 100% of comrpessor capacity.Under "System Notes" on page 8, list settings which have been changed fromfactory default to accomadate applications and installation conditions.

III . Startup (Readings Should be Taken at Full Load if Possible) .YES NO

A. Does unit start and perform per sequence of operation as stated in the IM bulletin?

B. Do condenser fans rotate in the proper direction?

C. If the VFD Fan Speed Control option is present; does it function properly?

D. Is mechanical operation satisfactory (noise, vibration, etc)?

E. Is the main liquid line sight glasses clear (do not use the ETXV body sight glass)?

F. Are the line moisture indicators showing a dry system?

G. Is there a reset mode programmed?

ACTUAL CONDITIONS RECORDED AT START-UPCHILLER:

Entering Temp. °F Leaving Temp. °F GPM Pressure Drop ft

IV . Electrical Data

A. Unit voltage across each phase: L1-L2 V L1-L3 V L2-L3 V

B. Unit current per phase: L1 Amps L2 Amps L3 Amps

C. Compressor current per phase at starter input:

Compressor # 1: T1 Amps T2 Amps T3 Amps



D. The starter overload trip setting: C1 C2 C3

E. Phase voltage monitor settings: Voltage Imbalance Restart Time Delay

F. #1 Motor megger readings per Service Bulletin: #1 #2 #3

#4 #5 #6

#2 Motor megger readings per Service Bulletin: #1 #2 #3

#4 #5 #6

#3 Motor meggar readings per Service Bulletin: #1 #2 #3

#4 #5 #6




Circuit # 1 Readings Slide target %

Number of fan stages active Fan VFD YES NO

Microtech Verification

Refrigerant Pressures: Evaporator Pressure psig psig

Condenser Pressure psig psig

Liquid Line Pressure psig psig

Refrigerant Temps: Saturated Evaporator Temperature °F °F

Saturated Condenser Temperature °F °F

Saturated Liquid Line Temperature °F °F

Suction Temperature °F °F

Discharge Temperature °F °F

Liquid Temperature °F °F

Suction Superheat °F °F

Discharge Superheat °F °F

Liquid Subcooling °F °F

Condenser Approach °F

Evaporator Approach °F

EXV Data: EXV control Type

EXV Steps %

Circuit #1 Offsets: Evaporator Pressure psig

Condenser Pressure psig

Liquid Line Pressure psig

Evaporator Temperature °F

Condenser Temperature °F

Liquid Line Temperature °F

Additional Data: Liquid Line Filter Drier Pressure Drop #1 psid #2 psid

Condenser Pressure Drop psid

Oil Injection Pressure at Compressor psig

Oil Filter Pressure Drop from Compressor Discharges (as DP SW) psid

Circuit #1




Circuit # 2 Readings Slide target %


















EXV Steps %











Circuit #2




Circuit #3 Readings Slide target %


















EXV Steps %











Circuit #3




Note: If the refrigerant charge was adjusted, how much? List any leaks under notesCkt. 1 Ckt. 2 Ckt. 3

Non-MicroTech Information

Does the system contain glycol? YES NO

If yes, is it Ethylene or Proplene % by weight %

If the chilled water system includes glycol, have the setpoints been changed? YES NO

Note: If glycol had been added, has the contractor and owner been cautioned to maintain an adequate mix?

YES NO

Stage pressure hold setting psig, Stage Pressure unload setting psig.The freeze water setpoint °F.

The vibration levels are: Comp. #1 Comp. #2 Comp. #3

Liquid Line filter/drier pressure drop #1 #2 #3

Note: See installation bulletin for low temperature or ice bank applications.

On completion list run hours and starts of each circuit:

Circuit # 1 hrs. Starts Circuit # 2 hrs. Starts Circuit # 3 hrs. Starts

Notes: (Include any known deficiencies or pending issues)

Brief System and Control Description, include how unit is cycled:




List any control settings changed from defaults:

Performed By: Title:PLEASE PRINT

Performed By: Date:SIGNATURE

Mechanical Contractor’s/Owner’s Signature (REQUIRED) Date:

Building AutomationSystem Contractor:

Electrical Contractor:

Attention: Warranty DepartmentDaikinP .O . Box 2510Staunton, VA 24402-2510

Screw Compressor Equipment Warranty Registration FormThis form must be completely filled out and returned to Staunton Warranty Department, within ten (10) days of start-up in order to comply with the terms of the Daikin Limited Product Warranty .


appendIx

appendIx

DefinitionsActive Set PointThe active set point is the setting in effect at any given moment. This variation occurs on set points that can be altered during normal operation. Resetting the chilled water leaving temperature set point by one of several methods, such as return water temperature, is an example.

Active Capacity LimitThe active set point is the setting in effect at any given moment. Any one of several external inputs can limit a compressor’s capacity below its maximum value.

Dead BandThe dead band is a range of values surrounding a set point such that a change in the variable occurring within the dead band range causes no action from the controller. For example, if a temperature set point is 44°F and it has a dead band of ± 2 degrees F, nothing will happen until the measured temperature is less than 42°F or more than 46°F.

DINDigital input, usually followed by a number designating the number of the input.

ErrorIn the context of this manual, “Error” is the difference between the actual value of a variable and the target setting or set point.

Evaporator ApproachThe evaporator approach is calculated for each circuit.

Evaporator Approach = LWT – Evap Saturated Temp

Evap Recirc TimerA timing function, with a 30-second default, that holds off any reading of chilled water for the duration of the timing setting. This delay allows the chilled water sensors (especially water temperatures) to take a more accurate reading of the chilled water system conditions.

EXVElectronic expansion valve, used to control the flow of refrigerant to the evaporator.

Load LimitAn external signal from the keypad, the BAS or a 4-20 ma signal that limits the compressor loading to a designated percent of full load. Frequently used to limit unit power input.

Load BalanceLoad balance is a technique that equally distributes the total unit load among the running compressors on a unit or group of units.

LWTLeaving water temperature. The “water” is any fluid used in the chiller circuit.

msMilli-second

OATOutside ambient air temperature

OffsetOffset is the difference between the actual value of a variable (such as temperature or pressure) and the reading shown on the controller as a result of the sensor signal.

pLANPeco Local Area Network is the proprietary name of the network connecting the control elements.

Refrigerant Saturated TemperatureRefrigerant saturated temperature is calculated from the pressure sensor readings for each circuit. The pressure is fitted to an R-134a temperature/pressure curve to determine the saturated temperature.

Soft LoadSoft Loading is a configurable function used to ramp up the unit capacity over a given time period, usually used to influence building electrical demand by gradually loading the unit.

SPSet point

SSSSolid state starter as used on Daikin screw compressors.

Suction SuperheatSuction superheat is calculated for each circuit using the following equation:

Suction Superheat = Suction Temp – Evap Saturated Temp

Stage Up/Down Accumulator - FansThe accumulator can be thought of as a bank storing occurrences that indicate the need for an additional fan.

Stageup/Stagedown Delta-TStaging is the act of starting or stopping a compressor or fan when another is still operating. Startup and Stop is the act of starting the first compressor or fan and stopping the last compressor or fan. The Delta-T is the “dead band” on either side of the set point in which no action is taken.

Stage Up DelayThe time delay from the start of the first compressor to the start of the second.

Startup Delta-TNumber of degrees above the LWT set point required to start the first compressor.

Stop Delta-TNumber of degrees below the LWT set point required for the last compressor to stop.

VDCVolts, Direct current, sometimes noted as vdc.

IOM 1202-2 (05/15) ©2015 Daikin Applied | (800) 432–1342 | www.DaikinApplied.com

Daikin Applied Training and DevelopmentNow that you have made an investment in modern, efficient Daikin Applied equipment, its care should be a high priority. For training information on all Daikin Applied HVAC products, please visit us at www.DaikinApplied.com and click on Training, or call 540-248-9646 and ask for the Training Department.

Warranty

All Daikin Applied equipment is sold pursuant to its standard terms and conditions of sale, including Limited Product Warranty. Consult your local Daikin Applied representative for warranty details. To find your local Daikin Applied representative, go to www.DaikinApplied.com.

Aftermarket Services

To find your local parts office, visit www.DaikinApplied.com or call 800-37PARTS (800-377-2787). To find your local service office, visit www.DaikinApplied.com or call 800-432-1342.

This document contains the most current product information as of this printing. For the most up-to-date product information, please go to www.DaikinApplied.com.

Products manufactured in an ISO Certified Facility.

Date: May 2015 Pathfinder Air-cooled Screw Chillerslit.daikinapplied.com/bizlit/DocumentStorage/AirCooledChiller/... · Air-cooled Screw Chillers Model AWS ... Pre-Start Checklist

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