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MEP ENGINEERING
PROCESS CONTROL & PLANT AUTOMATION
COMMISSIONING & VALIDATION
TOXIC GAS MONITORING SYSTEMS
ARC FLASH & ELECTRICAL SAFETY
Lab Architect Group
MIT He Recovery
Specification List – Bid Set
20043.001
TABLE OF CONTENTS
23 05 00 BASIC MECHANICAL REQUIREMENTS
23 05 05 ELECTRICAL REQUIREMENTS FOR MECHANICAL EQUIPMENT
23 05 08 BASIC MECHANICAL MATERIALS AND METHODS
23 05 10 BASIC PIPING MATERIALS AND METHODS
23 05 19 METERS AND GAUGES
23 05 23 HVAC VALVES
23 05 29 HANGERS AND SUPPORTS
23 05 48 VIBRATION CONTROL
23 05 53 MECHANICAL IDENTIFICATION
23 05 93 TESTING ADJUSTING AND BALANCING
20 07 00 MECHANICAL INSULATION
23 08 00 HVAC COMMISSIONING
23 09 23 BUILDING MANAGEMENT SYSTEMS
23 21 13 HYDRONIC PIPING
23 21 23 HVAC PUMPS
23 30 00 METAL DUCTWORK AND ACCESSORIES
23 34 00 FANS
23 72 00 ENERGY RECOVERY UNITS
23 82 19 HEATING AND COOLING TERMINAL UNITS
26 00 00 BASIC ELECTRICAL REQUIREMENTS
26 00 10 BASIC ELECTRICAL MATERIALS AND METHODS
26 01 01 ELECTRICAL CONNECTIONS FOR EQUIPMENT
26 01 33 RACEWAYS
26 05 19 WIRES AND CABLES
26 05 26 GROUNDING
LAB ARCHITECT GROUP
MIT HELIUM RECOVERY
SPECIFICATION LISTBID SET
20043.001 2 of 2
26 05 29 SUPPORTING DEVICES
26 05 53 ELECTRICAL IDENTIFICATION
26 24 16 PANELBOARDS
26 27 16 CABINETS, BOXES AND ENCLOSURES
26 27 26 WIRING DEVICES
26 28 13 FUSES
26 28 16 CIRCUIT AND MOTOR DISCONNECTS
26 50 00 LIGHTING FIXTURES
28 31 00 FIRE ALARM SYSTEM
40 05 17 COPPER PROCESS PIPING
40 05 23 STAINLESS PROCESS PIPING
40 05 24 VACUUM JACKETED PROCESS PIPING
40 05 56 PROCESS VALVES
40 05 XX STARTUP AND COMMISSIONING
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REVISION HISTORY
Rev Description of ChangeEffective Date
0 60% Progress Print August 16, 2019
1 Bid Set January 6, 2020
SECTION 23 05 00- BASIC MECHANICAL REQUIREMENTS
PART 1 – GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of Contract, including General and
Supplementary Conditions and Division 1 Specification Sections, apply to this
Section.
1.2 SUMMARY
A. This Section includes general administrative and procedural requirements for
mechanical installations. The following administrative and procedural
requirements are included in this Section to expand the requirements specified in
Division 1:
1. Submittals.
2. Coordination Drawings.
3. Record Documents.
4. Maintenance Manuals.
5. Coordination.
6. Code Conformance.
7. Manufacturers and Equals
8. Guarantee
1.3 SUBMITTALS
A. General: Follow the procedures specified in Division 1 for submittal procedures.
B. Provide product data and shop drawings for all equipment, trim, devices and
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materials. Submittals shall be project specific indicating all models, specialties
and accessories intended to be provided. Clearly indicate the precise items
submitted. Poorly prepared or reproduced submittals will be rejected.
C. Provide installation instructions and operation and maintenance data for all
equipment in a manual format.
D. Provide complete “as-built” record document mechanical drawings.
E. Provide complete copies of all air and water system testing, adjusting and
balancing reports.
1.4 QUALITY ASSURANCE
A. Secure and pay for all necessary fees, permits and approvals, as required for the
work of Divisions 21, 22 and 23.
B. Before commencing work, review the project with the Local and State inspectors.
Conform, in every respect, with their separate recommendations, unless the
recommendations are inferior to, or in conflict with, the Contract Documents, then
Architect's/Engineer’s acceptance will be required before proceeding with the
work.
1.5 RECORD DOCUMENTS
A. During the progress of the work, the Contractor shall furnish and keep on file at
all times a complete and separate set of black or blue line print record documents.
Each shall be clearly, neatly and accurately noted, promptly, as the work
progresses, all mechanical changes, revisions, additions, deletions and deviations
from the work. Wherever the work was installed, otherwise than as shown on the
Contract Drawings, the changes shall be so noted. In addition to the requirements
specified in Division 1 section on “FACILITIES OPERATION”, indicate the
following installed conditions:
B. Prepare record drawings in pdf format and provide record Revit model. Indicate
installed conditions for:
1. Ductwork mains and branches, size and location, for both exterior and
interior; locations of dampers and other control devices; filters, boxes, and
terminal units requiring periodic maintenance or repair.
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2. Mains and branches of piping systems, with valves, and control devices
located and numbered to correspond with installed tag numbers, concealed
unions located, and with items requiring maintenance located (i.e., traps,
programs (with comments explaining program logic), and other software used
by the BMS shall be licensed to and remain property of MIT.
8. Exceptions to BACnet compliant requirements will be allowed only when
expanding a legacy proprietary Continuum BMS within a building.
9. The BMS shall interface with MIT’s web-based Building Analytics System
called KGS Clockworks. The work associated with this interface is not part of
the BMS contractor’s scope.
1.8 DELIVERY, STORAGE, AND HANDLING
A. Provide factory shipping cartons for each piece of equipment and control device.
Maintain equipment and devices in cartons while shipping, storing and handling as
required to prevent equipment damage, and to eliminate dirt and moisture from
equipment. Store equipment and materials inside and protect from weather.
1.9 COORDINATION OF WORK WITH OTHER DIVISIONS
A. This section presents information to be used by the General Contractor and
subcontractors to facilitate full and accurate division of work. The general contractor has
full responsibility to properly coordinate and assign all work even if a prescription of the
division of work is not presented here. This information is presented to assist the
Contractor, not to assume the responsibility to fully coordinate all work.
B. Power for a minimum quantity of control panels is indicated on the Electrical Drawings
and the responsibility of the Division 26 Contractor. The BMS Contractor is responsible
for coordinating all power supply wiring from power source to power connections on
control panels, controllers, network switches and network equipment in accordance with
Division 26 Sections. The BMS Contractor shall include and provide all work to alter or
add to the power requirements indicated on the Drawings as required to complete the
BMS installation.
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C. Refer to Division-26 sections for the following work; not work of this Section.
1. Variable frequency drives except when furnished with Division 23 equipment.
D. Setting in place of valves, flow meters, water pressure and differential taps, test plugs,
flow switches, thermal wells, dampers, air flow stations, furnished by BMS Contractor,
shall be by Mechanical Contractor.
E. Installation of control components and related conduit and wire for equipment and
systems furnished by the Mechanical Contractor and requiring field installation of
interconnecting control wiring or components shall be by the BMS Contractor.
PART 2 - PRODUCTS
2.1 UNINTERRUPTABLE POWER SUPPLY
A. All network controllers and critical system controllers shall be on UPS power. A critical
system controller is defined as one that controls:
1. Chilled Water, Hot Water, & Steam Generation and Distribution.
2. Air Handlers (Supply AHUs, Make-up Air AHUs, Exhaust AHUs, Energy
Recovery Units).
3. Rooftop Units.
4. Air Distribution for Critical Rooms: Labs, Vivariums, Executive Offices, IS&T
Data Rooms.
B. The UPS strategy can be designed and implemented as a small UPS per controller or one
standalone UPS dedicated for the critical controls for an entire building. Additionally, a
building UPS used for other systems may be used for the BMS as well.
C. The UPS shall be monitored by the BMS for “low battery” and “battery on” status.
D. Individual UPSs used for controllers shall be similar to APC Model #SUA500PDR-S and
mounted underneath the controller in an enclosure of similar specifications to the
controller enclosure.
2.2 WIRE AND CABLE
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A. The BMS contractor shall provide complete electrical wiring for the BMS, including 120
VAC power wiring from circuit breaker provided by Division 26 to BMS panel or device.
B. The BMS contractor shall provide control wiring, including conduit, to control devices
from appropriate BMS controller enclosures.
C. The BMS contractor shall provide communications wiring, including conduit, for the
BACnet MSTP network.
D. The BMS contractor shall provide final power connections, including conduit, wire,
and/or disconnect switches, to control devices and control panels from the appropriate
electrical distribution panels.
E. Final connection points at devices and panels shall be made either at terminal blocks
integral to the device or at separate terminal blocks mounted inside of BMS controller
enclosures. Crimped connections are not allowed for termination of control wiring.
F. All wire and cable shall meet the requirements of NFPA 70 and NFPA 90A in addition to
the requirements of this specification.
G. Terminal blocks which are not integral to other equipment shall be insulated, modular,
feed through, clamp style with recessed captive screw-type clamping mechanism, shall be
suitable for rail mounting, and shall have end plates and partition plates for separation or
shall have enclosed sides
H. Control Wiring for Analog Signals:
1. Control wiring for analog signals shall be 18 AWG, copper, single or multiple-
twisted, minimum 2 inch lay of twist, 100 percent shielded pairs, and shall have
300-volt insulation. Each pair shall have a 20 AWG tinned-copper drain wire
and individual overall pair insulation. Cables shall have an overall aluminum-
polyester or tinned-copper cable-shield tape, overall 20 AWG tinned-copper
cable drain wire, and overall cable insulation.
2. Stranded twisted/shielded control conductors are required with shields to be
terminated within variable frequency drive enclosures to reduce effects of noise
from the VFD. The BMS contractor shall follow the VFD manufacturer's
installation instructions for wiring control conductors to the VFD.
I. Control Wiring for Digital Signals:
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1. Control wiring for digital signals shall be 18 AWG copper and shall be rated for
300-volt service.
J. Control Wiring and Power Wiring for 120-Volt Circuits:
1. Wiring for 120-volt circuits shall be 12 AWG stranded copper and shall be rated
for 600volt service.
K. Transformers:
1. Transformers shall be UL 1585-3 approved. Transformers shall be sized so that
the connected load is no greater than 80 percent of the transformer rated
capacity.
L. BMS Ethernet Network Cable shall be provided by the telecom contractor to a jack
located in the network panel.
1. BMS Ethernet network cable shall meet or exceed all requirements of Category
6 cable as specified in TIA/EIA-568-B.2. Terminations, patch panels, and other
hardware shall meet or exceed Category 6 specifications and shall be as
specified in Telecommunications specification.
2. Cabling products shall be tested and certified for use at data speeds up to at least
100 Mbps.
2.3 SENSING TUBING
A. The BMS contractor shall provide MIT sensing tubing required for a complete and
functional BMS, including sensing tubing required for:
1. Air Flow Stations.
2. Air Flow Sensing for VAV Boxes (if not provided with the VAV box).
3. Static Pressure Sensors and Switches (for air applications).
4. Differential Pressure Sensors and Switches (for air applications).
5. Differential Pressure Sensors and Switches (for water applications).
6. Refrigerant Detection Monitoring.
7. Gas Detection Monitoring.
8. Differential Pressure Sensors and Switches (for water applications)
B. Copper:
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1. Copper tubing shall conform to ASTM B 88 and ASTM B 88M.
C. Stainless Steel:
1. Stainless steel tubing shall conform to ASTM A 269.
D. Plastic:
1. Plastic tubing shall have the burning characteristics of linear low-density
polyethylene tubing, shall be self-extinguishing when tested in accordance with
ASTM D 635, shall have UL 94 V-2 flammability classification or better, and
shall withstand stress cracking when tested in accordance with ASTM D 1693.
2. Plastic-tubing bundles shall be provided with Mylar barrier and flame-retardant
polyethylene jacket.
2.4 ENCLOSURES
A. Indoor control enclosures shall be fully enclosed NEMA 1 rated sheet steel construction
with baked enamel finish, unless otherwise indicated, with hinged door key-lock latch and
removable sub-panels. Outdoor enclosures shall be rated NEMA Type 4X.
B. A common key shall open each control panel. Locks shall be single keyed locking
twistable knob(s)
C. Prewire internal and face-mounted device connections with color-coded stranded
conductors tie-wrapped or neatly installed in plastic troughs.
D. Field connection terminals shall be UL listed for 600 V service, individually identified
per control and interlock drawings, with adequate clearance for field wiring.
E. Each local panel shall have a control power source power switch (on-off) with
overcurrent protection.
F. Provide double doors on cabinets wider than 36 inches.
G. Enclosures shall contain a metal or plastic documentation holder on the inside of the door.
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H. The wiring within all enclosures shall be run in plastic track. Wiring within controllers
shall be wrapped and secured.
I. Electric Outlet: Provide a single phase, 120 Volt AC electrical service outlet inside or
within 6 feet of the controller enclosures for use with test equipment.
2.5 NETWORKING / COMMUNICATIONS
A. Network Level
1. The BMS shall reside on the protected MIT Ethernet Network also known as the
MIT BMS VLAN.
2. The BMS shall be an extension of the campus approved BMS platforms listed
above.
3. The BMS shall be web-based.
4. The BMS shall be native BACnet except where proprietary Continuum
expansion is required).
5. The BMS shall be capable of being polled by KGS Clockworks.
6. The BMS shall be capable of communication with the PI data historian.
7. The BMS shall be capable of Modbus IP communication.
8. Workstations and printers for buildings are not generally required.
B. Integrators and Routers
1. Integrators and Routers shall be available to:
a. Connect the first tier network to a facility wide communications
network.
b. Connect the BMS system to other Microprocessor based control systems,
such as a Variable Frequency Drive, via BACnet, LonMark or Open
Protocol Bus communications interface, where available.
c. Provide for a change in network physical media or data transmission
rates.
2.6 CONTROLLERS (TIER 1 AND TIER 2)
A. All controllers shall have an integrated hardware based real time clock.
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B. Each controller shall have connection provisions for a portable operators’ terminal (POT).
This tool shall allow the user to display, generate or modify all local point databases and
operating programs.
C. Provide a RS-232C port at each controller to allow access to the entire local network from
any controller on line with the operator's terminal or laptop computer.
D. All controllers shall contain self-diagnostics that continuously monitor the integrity of the
system. Any malfunction of the system shall be reported to the operator’s terminal to
inform the operator of the unitary controllers affected.
E. Power Failure: In the event of the loss of normal power, there shall be an orderly
shutdown of all controllers to prevent the loss of database or operating system software.
Nonvolatile memory shall be incorporated for all critical controller configuration data.
Battery backup shall be provided to support the real-time clock and all volatile memory
for a minimum of 72 hours.
F. During a loss of normal power, the control sequences shall go to the normal system
shutdown conditions. Upon restoration of normal power, after a minimum off time delay,
the controller shall automatically resume full operation without manual intervention
through a normal soft-start sequence.
G. Should a controller memory be lost for any reason, the operator workstation shall
automatically reload the program transparent and without any intervention by the system
operators.
H. Inputs
1. Monitoring of the following types of inputs, without the addition of equipment
outside the system controller cabinet
a. 4-20 mA sensors
b. 0-10 VDC sensors
c. Any resistive input
2. Digital inputs shall monitor dry contact closures. Input shall provide filtering to
eliminate false signals resulting from input “bouncing”.
3. Pulse Counter inputs shall monitor dry contact pulses with an input resolution of
five HZ minimum.
I. Outputs
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1. Analog outputs shall provide the following control outputs:
a. 4-20 mA
b. 0-10 VDC
2. Digital outputs shall provide SPDT output contacts rated for 2 amps at 24 VAC.
Provide surge and noise suppression on all pilot relays. Inductive loads, i.e.
solenoids, shall be controlled by pilot relays.
3. TriState outputs shall be paired digital outputs for use as Power Close/Power
Open control output contacts rated for 2 amps at 24 VAC. Provide surge and
noise suppression on all pilot relays. Inductive loads, i.e. solenoids, shall be
controlled by pilot relays.
J. Manual Overrides
1. Switches shall be mounted within the system controller key-accessed enclosure,
or the adjacent local control panel.
2. Switches shall be rotary gradual position providing the full analog signal range
of the associated analog output and shall be operable whether the panel
processor is operational or not.
3. System controllers shall monitor the status of all override switches and shall
generate an alarm whenever the switch is not in the automatic position.
4. Manual override switches shall be provided for all digital outputs (DO) and
analog outputs (AO).
K. Field Controllers
1. Field controllers shall be BACnet compliant (except where proprietary
Continuum expansion is required).
2. All field controllers must contain all of the I/O and sequence logic for the
particular system that they serve. For example, it is not acceptable to split an air
handling unit between two field controllers.
3. Airflow tracking control for a laboratory or vivarium shall reside on one
controller and not rely on the network to function.
4. The hardware in conjunction with the software residing on the controller must
execute the sequence of operation as specified. Controllers that contain
“canned” uneditable programs that do not meet the sequence of operations will
not be acceptable.
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5. The hardware in conjunction with the software residing on the controller shall,
where possible, execute the sequence of operation without relying on the
building network.
6. IP based field controllers that control major HVAC equipment (Air Handlers,
Heating and Cooling Equipment) shall be acceptable.
2.7 SUPERVISOR CONTROL UNITS (TIER 1 CONTROLLERS)
A. Network and System Controllers: Supervisory Controllers shall reside on the first tier
network and must be fully capable of communicating to a BacNet network.
2.8 APPLICATION CONTROL UNITS (TIER 2 CONTROLLERS)
A. The Application Control Units (ACU) shall be a stand-alone programmable controller.
The controller shall include all hardware and software required for communications with
the Supervisory Control Unit (SCU). A dedicated panel must be provided for each
system as indicated on the Drawings.
B. Programming of application specific controllers shall utilize the manufacturer’s
configuration tool with a library of proven software programs.
C. The operator interface to any ACU point or program shall be through the SCU panel
connection to any ACU on the local network.
D. Each ACU shall operate as a stand-alone controller capable of performing its specified
control responsibilities independently of other controllers in the network.
E. All system setpoints, proportional bands, control algorithms, and any other programmable
parameters shall be stored such that a power failure of any duration does not necessitate
reprogramming the ACU.
F. The control program shall reside in the ACU. The application program shall be
maintained in ROM. The default database, i.e., setpoints and configuration information,
shall be stored in EEPROM. Controllers requiring local setting of potentiometer or dip
switches are not acceptable.
2.9 TERMINAL CONTROL UNITS (TIER 2)
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A. Terminal control units shall not be permitted.
2.10 CONTROL INPUT DEVICES (SENSORS)
A. General
1. Provide all remote sensing points and instrumentation as required for the
systems. All sensors shall have accuracy as stated hereinafter.
2. Provide installation, testing and calibration of all sensors, transmitters, and other
input devices to meet the system requirements.
3. End to End Accuracy: The system shall maintain the specified analog
end-to-end accuracy throughout the warranty period from sensor to the PC
graphics work station readout.
4. Sensor accuracy: Sensors are only one element in the overall system accuracy
to which the BMS can respond. That response includes alarm decision, value
display, value calculation on which analog values must be multiplied,
subtracted, square rooted, etc. As such, the system end-to-end accuracy’s are
herein stated. Sensors that have a tendency to drift with age shall be supplied
with self-correction, therefore the following range/accuracies are stated
Accuracy.
5. Device Accuracy Requirements
a. Space temperature +/- 0.5 F for in the 0 - 130 F range
b. Duct temperatures +/- 1.0 for in the 40 to 130F range
c. Outside air temperatures +/-.5 F for in the -30 to 230 F range
d. Relative humidity +/-3% RH
e. Water temperatures +/- .5 F for in the 30 to 120 F range
f. Water temperatures +/- 1.0 F for in the 120 to 230 F range
g. Static Pressure 0-10 inch range water gauge +/- .1 inches
h. Filter status differential over a 0-2 inch range +/- .1 inch
i. Pressure switches +/- 3%
j. Barometric Pressure +/- .1 Hg
k. Differential water pressure +/- 1%
6. Input/output sensors and devices shall be closely matched to the requirements of
the remote panel for accurate, responsive, noise-free signal input/output.
Control input response shall be high sensitivity and matched to the loop gain
requirements for precise and responsive control.
B. Temperature Sensors
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1. General Requirements
a. Input/output sensors and devices shall be closely matched to the
requirements of the remote panel for accurate, responsive, noise-free
signal input/output. Control input response shall be high sensitivity and
matched to the loop gain requirements for precise and responsive
control. Where local displays are required, the sensor shall incorporate
an LED or LCD display for viewing the temperature, setpoint, and other
operator selectable parameters. If the setpoint adjustment is integral to
the LED or LCD display, the BMS contractor should align the high and
low limits from the front end workstation so that they are in
synchronization with the BMS software. Outside air temperature shall be
measured by the MIT weather station(s).
b. Temperature sensors shall be Resistance Temperature Detector (RTD)
type of 100, 1000, or 3,000 ohm platinum, 500 ohm Balco, or 20,000
ohm.
c. The following shall apply to temperature sensors:
1.) All temperature sensors shall be thermistors.
2.) Sensing elements shall be hermetically sealed.
3.) Stem and tip construction shall be 304 stainless steel, copper,
glass, or epoxy.
4.) External trim material shall be corrosion resistant designed for
the intended application.
2. Room Temperature Sensors
a. Room sensors shall be constructed for surface mounting.
b. Setpoint reset slide switch providing an adjustable range.
c. Momentary override request push button for activation of after hours
operation.
d. Provide room sensors with analog thermometer.
e. Provide insulated subbase for all thermostats installed on outside walls.
3. Duct Mount Sensors
a. Duct mount sensors shall mount in an electrical box through a hole in the
duct and be positioned so as to be easily accessible for repair or
replacement.
b. Duct sensors shall be insertion type and constructed as a complete
assembly including lock nut and mounting plate.
c. For outdoor air duct applications, use a weatherproof mounting box with
weatherproof cover and gasket.
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4. Averaging Sensors
a. For ductwork greater in any dimension that 48 inches and/or air
temperature stratification exists, utilize an averaging sensor with
multiple sensing points, when physically possible.
b. For plenum applications such as mixed air temperature measurements,
utilize a string of sensors mounted across the plenum to account for
stratification and/or air turbulence. Averaging Sensors shall be sized to
ensure sensing element has a minimum length equal to 1 foot / 2 square
feet of duct cross-sectional area at the installed location.
c. Provide supports at the sides of the duct to support the capillary sensing
string.
C. Humidity Sensors
1. Room humidity sensors shall have a sensing range of 20% - 80%.
2. Room humidity sensors shall be suitable for ambient conditions of 40°F - 100°F.
3. Room humidity sensors shall not drift more than =/- 3% of full scale annually.
4. Relative humidity sensors shall use thin film capacitive type. The transmitters
shall have replaceable sensing elements.
5. Duct mounted relative humidity sensing element shall be encapsulated in potting
material within a stainless steel probe.
6. Outside air relative humidity temperature shall be measured by the MIT weather
station(s).
7. Veris or equal.
D. Pressure Sensors
1. Pressure sensor range shall be as shown or as required for the application.
Pressure sensor ranges shall not exceed the high end range shown by more than
50 percent.
2. Provide remote sensing element(s) whenever operating temperature exceeds the
transmitter’s maximum allowable temperature.
3. Pressure measurements of liquids or gas shall be +/- 1.5% of full scale accurate.
4. Transmitter shall have provision for zeroing by pushbutton or digital input.
5. Wet differential pressure sensors/transmitters for water and steam applications
shall be provided with 3-valve manifold for servicing. If an electronic
differential pressure sensor is used, there must be isolation valves installed and
a take-off for bleeding of the system.
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6. Space differential pressure elements/pick-ups required to measure pressure
shall be constructed of appropriate material for the space and application and
shall be ceiling mounting or wall mounted.
2.11 STATUS AND SAFETY SWITCHES
A. Current Sensing Switches
1. Current sensing switch shall be self-powered with solid state circuitry and a dry
contact output. It shall consist of a current transformer, a solid state current
sensing circuit, adjustable trip point, solid state switch, SPDT relay and an LED
indicating the on or off status. A conductor of the load shall be passed through
the window of the device. It shall accept over current up to twice its trip point
range. Measurement of electric feeds shall adhere to the MIT metering
specification.
B. Low Temperature Limit Switches
1. The low temperature limit switch shall be of the automatic reset type. Two sets
of contacts, with each contact having a rating greater than its connected load.
Contacts shall open or close upon drop of temperature below setpoint as shown
and shall remain in this state until reset automatically.
2. Minimum element length of 1 foot/square-foot of coverage which shall respond
to the coldest 12 inch segment.
3. Field-adjustable setpoint with a range of at least 15°F to 55°F.
4. Johnson/Penn, Schneider Electric or MIT approved equal (prior to bid).
2.12 DAMPER ACTUATORS
A. Electric Damper Actuators
1. Size operators for smooth and positive operation of devices served, and with
sufficient capacity to provide tight shutoff against system temperatures and
pressure encountered. Damper actuators shall have a visible position indicator.
2. Damper actuators shall directly couple around damper shaft or an actuator crank
arm may be linked directly to damper blades but not to another crank arm.
3. All actuators (except terminal units) shall be furnished with mechanical spring
return unless otherwise specified in the sequences of operations. The actuator
mounting arrangement and spring return feature shall permit normally open or
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normally closed positions of the dampers as required. Damper actuators shall
have an electronic cut off or other means to provide burnout protection if stalled.
4. All actuators shall have external adjustable stops to limit the travel in either
direction and a gear release to allow manual positioning.
5. Modulating actuators shall accept 24 VAC or VDC power supply and consume
no more than 15 VA and be UL listed. Control signal shall be 2-10 VDC or 4-
20 mA and actuator shall provide a clamp position feedback signal of 2-10
VDC. Feedback signal shall be independent of the input signal and may be used
to parallel other actuators and provide true position indication. The feedback
signal of one damper actuator for each separately controlled damper shall be
wired back to a terminal strip in the control panel for trouble-shooting purposes.
Fail last position is not acceptable. Tri-state actuation is not acceptable.
6. Two-position or open/closed actuators shall accept 24 or 120 VAC power
supply and be UL listed. Isolation, exhaust fan and other dampers as specified
in the sequence of operations shall be furnished with adjustable end switches to
indicate open/closed position or be hard wired to start/stop associated fan. Two-
position actuators as specified in sequences of operations as “quick acting” shall
move full stroke within 20 seconds.
7. Acceptable Manufacturers: Schneider Electric, Belimo, or MIT Approved Equal
(prior to bid).
2.13 VALVE ACTUATORS
A. Electronic Valve Actuators
1. Each actuator shall have current limiting circuitry incorporated in its design to
prevent damage to the actuator.
2. Provide modulating and two-position actuators as required by the sequence of
operation. Actuators shall provide the minimum torque required for proper
valve close-off against the system pressure for the required application. Size
valve actuator based on valve manufacturer’s recommendations for flow and
pressure differential. All actuators shall fail in the last position unless specified
with mechanical spring return in the sequence of operations. The spring return
feature shall permit normally open or normally closed positions of the valves as
required. All direct shaft mount rotational actuators shall have external
adjustable stops to limit the travel in either direction. Damper actuators shall
have a full stroke response time in both directions of 90 seconds or less at rated
load.
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3. Modulating Actuators shall accept 24 VAC or VDC and 120 VAC power supply
and be UL listed. Control signal shall be 2-10 VDC or 4-20 mA and actuator
shall provide a clamp position feedback signal of 2-10 VDC. Feedback signal
shall be independent of the input signal and may be used to parallel other
actuators and provide true position indication. The feedback signal of each
valve actuator (except terminal valves) shall be wired back to a terminal strip in
the control panel for trouble-shooting purposes.
4. Two-position or open/closed actuators shall accept 24 or 120 VAC power
supply and be UL listed. Butterfly isolation and other valves as specified in the
sequence of operations shall be furnished with adjustable end switches to
indicate open/closed position or be hard wired to start/stop associated pump or
chiller.
2.14 CONTROL VALVES
A. All automatic control valves shall be fully proportioning and provide near linear heat
transfer control. The valves shall be quiet in operation and fail-safe open, closed or in
their last position as required.
B. All control valves shall be sized by the BMS Contractor to meet the heating and cooling
loads as specified. All control valves shall be suitable for the system flow conditions and
close against the differential pressures involved. Body pressure rating and connection
type (sweat, screwed or flanged) shall conform to pipe schedule elsewhere in this
Specification.
C. Where required, spring ranges must be selected to prevent overlap of operation and
simultaneous heating and cooling.
D. Valves shall be rated for a minimum of 150 percent of system operating pressure at the
valve location but not less than 125 psig.
E. Three-way valves shall have linear characteristics so that the valve pressure drop remains
constant regardless of the valve position.
F. Provide all control valves as shown on the plans/details and as required to perform
functions specified. Maximum pressure drop through valve: Modulating flow control,
greater of 10 feet of water or the pressure drop through the apparatus.
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G. Valves 2 inch and smaller: Pressure independent characterized ball valve, 400# WOG,
bronze body, stainless ball and stem, pressure and temperature ports, reinforced PTFE
seats & seals, screwed ends, 250°F rating, 200 psig close-off pressure, and a maximum
differential pressure rating of not less than 50 psig.
1. Acceptable Manufacturers: Belimo or MIT Approved Equal (prior to bid).
H. Valves 2-1/2 inch and larger: Pressure independent ball valves. The valve body shall be
of cast iron and rated for 150 PSI working pressure. Internal parts shall be of stainless
steel.
1. Acceptable Manufacturers: Belimo or MIT Approved Equal (prior to bid).
2.15 CONTROL RELAYS
A. Relays shall be of the following type:
1. Coil ratings of 120 VAC, 50 mA or 10-30 VAC/VDC, 40 mA as suitable for the
application.
2. Complete isolation between the control circuit and the digital output.
3. Pickup rating, time and hold rating as required for individual applications.
4. Rated for a minimum of ten (10) million mechanical operations and a minimum
of 500,000 electrical operations.
5. Internal status LED.
2.16 THERMOSTATS
A. Low Voltage Thermostats
1. Electronic type with automatic night setback, suitable for heating or heating and
cooling as required. Provide setback schedule adjustment through keypad entry
on front of unit.
B. Line Voltage Thermostats
1. Use single or two pole as required, with minimum rating equal to electrical load
of device being controlled. Provide integral manual On/Off/Auto selector
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switch, maximum dead band of 2/F, concealed temperature adjustment, and
locking cover.
C. Remote Bulb Thermostats
1. One or two-pipe, proportioning, direct or reverse acting to match device being
controlled. Thermostat to have adjustable setpoint and throttling range.
Capillary to remote bulb shall be armored.
D. Duct Thermostats
1. Pneumatic, one or two-pipe proportioning type, with adjustable setpoint and
throttling range. Units shall be direct or reverse acting to match device being
controlled. Sensing element to be averaging type, temperature compensated,
armored, with minimum length of 8 feet.
E. Immersion Type Thermostat Sensors
1. Rod and tube type with linear output. Provide separable wells with heat
conductive fluid for installation in pipeline. Units shall be factory calibrated.
PART 3 - EXECUTION
3.1 IDENTIFICATION
A. All I/O field devices (except space sensors) that are not mounted within field installed
panels (FIPs) shall be identified with name plates.
B. All I/O field devices inside FIPs shall be labeled.
C. The identification shall match all documentation and identify the function (i.e. mixed air
temperature sensor).
D. Calibration settings shall be marked with paint or indelible ink.
E. Each terminal strip termination shall be tagged with an identification that matches the
control drawings.
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F. The outside of each FIP shall be identified with a bakelite label matching the
identification name shown on the drawings.
G. Identify all control wires with labeling tape or sleeves using either words, letters, or
numbers that can be exactly cross-referenced with as-built drawings.
H. Identify controlled devices with 1 inch by 3 inch engraved brass or laminated plastic
nameplates with 3/8 inch high lettering. Plastic nameplates shall be 1/8 inch thick, black
with white letters. Nameplates shall show point identification number as shown on
control record drawings and a plain-text device description, e.g., "D-3 OUTSIDE AIR
DAMPER".
I. Junction box covers will be marked to indicate that they are a part of the BMS system.
3.2 ENCLOSURES
A. All controls and instruments shall be logically assembled at one or more panels.
Enclosures shall have hinged doors with locks and be marked with engraved labels.
B. All BMS controllers shall be located within enclosures.
C. Enclosure assemblies shall be UL listed and labeled as specified in “Codes and
Approvals” in this Section.
D. Enclosures shall be sized for a minimum 25% spare mounting space.
3.3 WIRING AND CONDUIT
A. The term wiring is construed to include furnishing of wire, conduit, miscellaneous
material and labor to install a working system. Outdoor installations shall be of
waterproof construction or in NEMA 3R or 4 enclosures.
B. Install wiring and conduit in accordance with Division 26. Control wiring run exposed or
surface mounted shall be run in raceway in finished spaces. Conduit may be used in lieu
of raceway in unfinished spaces such as storage rooms and mechanical rooms.
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C. Minimum wire size shall be 10 Ga. for ground, 12 Ga. for 120 VAC power 18 Ga. for
actuator power and 18 Ga. for switched output. All wires shall be sized per the NEC for
the load serviced.
D. All low voltage energy limited wiring (except 24 VAC power), installed in open tray or
installed as open wiring, shall be in jacketed cables dedicated to individual devices.
E. All wiring contained in metal wireways shall be in wireways dedicated to low voltage
service. Power (24 volt and below) and Class One wiring may be run in the same
conduit.
F. Low voltage energy limited wiring shall not be run in the same wireways with or closely
parallel to high voltage or switched power wiring. Interposing relays shall be used for all
switched power loads and shall be located such that the switched power conductors do
not run in the same wireway as the interposing relay coil power or any other energy
limited low voltage conductors.
G. Splicing shall be minimized and shall be done only in accessible outlet, junction, or
cabinet boxes that are clearly shown on the As-Built Record drawings. Splicing shall be
made with Minnesota Mining & Mfg. Co. "Scotchloc" spring connectors with steel cap
and PVC insulation, Thomas & Betts or approved equal. When splicing is necessary the
insulation colors shall match and the conductors shall be mechanically secured to each
other so that no stress shall be applied to the splice. Splicing in long runs shall be
accomplished by a fully insulated crimped barrel connector.
H. Wire pulls by powered mechanical means will not be permitted. Conduit shall be cleaned
of foreign material just before pulling the wire or cable. Lubricants shall be compounds
specifically prepared for cable pulling and shall not contain petroleum or other products
that will affect cable insulation.
I. Wire that has scrapes, nicks, gouges, or crushed insulation shall not be used and shall be
removed.
J. Groups of conductors, where installed in cabinets and wire trays, shall be neatly grouped
with wire ties or equal.
K. All wire termination’s shall be made bare to screw terminals specifically designed for
bare wire connection or shall be made with T&B "Sta-Kon" (or equivalent) self-insulated,
spade lugs where connected to screw type terminals not specifically designed for bare
stranded wire connection.
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L. All wire shall be new and brought on the jobsite in original packages bearing
Underwriter's label and the date of manufacture.
M. No conduit shall be filled such that the maximum bundled cross sectional dimension
exceeds 40 % of conduit inside diameter. No raceway shall be filled to more than 40%
and maximum fill for "wiremold" (surface raceway) shall be 20%. Minimum conduit size
shall be ¾”.
N. No wire run or circuit shall be longer than 80% of the maximum allowable length or
power consumption for the wire size and application. No output circuit shall exceed 80%
of the maximum load capacity specified by the manufacturer.
O. The basic wiring method shall be in installed conduit unless otherwise permitted. All
concealed wiring shall be installed in conduit. All permitted open wiring shall be plenum
rated. Permitted open wiring is limited to the following applications and shall be installed
as described:
1. Wiring from a zone air flow terminal control unit to a nearby water control
valve not to exceed 6 feet. Ideal, but not always practical.
2. Wiring from any controller to a device which has otherwise has been approved
for installation and can not accept conduit connection. Conduit shall be used to
within 12 inches of the device.
3. Wiring otherwise protected by a metallic enclose or approved installation
method such as permitted cable tray, channel or similar.
P. Install in wireway all trunk communication wiring between the Operator Station and the
controllers and between the controllers. Open wiring is not permitted unless specifically
accepted.
Q. Wireway runs shall be parallel or perpendicular to walls, pipes and sides of openings.
Right angle turns shall be used and passage ways for access and servicing shall not be
blocked.
R. All conductors shall be identified with typed or machine lettered labels, Briade or
approved equal. Tag numbers shall agree with wire numbers assigned on wiring
diagrams and the installation drawings.
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S. Open wiring when permitted, shall be installed in compliance with WAC 296 with
reference to NEC 336-15 and shall also be installed as follows:
1. All open wiring shall penetrate walls and cross ceilings within 18 inches of the
ceiling surface.
2. Wiring shall be attached to vertical supports at attachment points prepared by a
protective wrap of electrical tape around the support. This wrap shall be
installed so as to create a surface free of sharp edges.
3. Absolutely no attachment of wiring is to be made to pipe work or conduit of any
kind.
4. Wire ties, if used, shall be trimmed so as to reduce sharp edges.
5. The vendor shall provide required cabling attachment points for controls use if
the ceiling structure does not provide acceptable attachment points.
3.4 GENERAL INSTALLATION REQUIREMENTS:
A. Building Management System:
1. The BMS shall be completely installed, tested in accordance with the
commissioning section of this standards document, and ready for operation.
2. The BMS contractor shall ensure penetrations and mounting holes in the
building exterior required for the BMS installation are watertight.
3. The BMS contractor shall ensure that there is sufficient access for all BMS
devices. All control system devices shall be located such that they can be
accessed for to calibration, removal, or repair.
4. The BMS contractor shall ensure that the BMS installation does not interfere
with the clearance requirements for mechanical and electrical system operation
and maintenance.
B. BMS Controller Requirements:
1. All BMS controllers shall be installed in enclosure except for BMS controllers
used to control terminal units.
2. The BMS contractor shall provide a unique BMS controller for each major piece
of equipment. Exhaust fans and miscellaneous monitoring may reside on
controllers designated for other major equipment.
3. Control software algorithm and inputs and outputs for a single system or piece
of equipment shall reside on a single controller. Control loops shall not rely on
the network for control.
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4. The quantity of controllers connected on one secondary MSTP network shall not
exceed 75 percent of maximum node capacity published by the BMS
manufacturer. If necessary, provide additional hardware, over and above that
shown on MEP design consultant’s drawings, to meet this requirement.
5. I/O Point Capacity:
a. BMS contractor shall provide I/O point capacity required for system
control plus spare I/O points in each control panel. Spare I/O shall not be
required for terminal unit controllers.
b. Spare I/O point capacity shall be defined as terminal connections, which
are ready to accept digital or analog inputs, dry contacts for digital
outputs, and variable voltage or current terminals for analog outputs.
Universal type points are acceptable for both discrete and analog type
points.
c. Minimum spare I/O points in each control panel shall be as follows:
1.) (1) Digital Input.
2.) (1) Digital Output.
3.) (1) Analog Input.
4.) (1) Analog Output.
C. BMS Controller Enclosure Layout:
1. BMS controller enclosure shall be built to UL508A Standards in a UL certified
panel factory with appropriate labels.
2. Terminal strips shall be located either horizontally in upper half of the back
panel or vertically.
3. All power greater than 50VAC shall not be exposed in panel. In order to prevent
accidental shock or Arc Flash, this power must be covered so that it cannot be
touched when BMS controller enclosure door is open.
4. The control panel shall contain a utility 3 prong 120VAC outlet that is
individually overload protected.
5. 24 VDC and 120 VAC, wire, cable, and devices shall be separated by 6 inches
minimum.
6. Wire and cable shall be enclosed in wireways or bundled w/ wire ties and
secured to the back panel. This does not apply to wire exiting wireways, to
terminal strips, or to panel mounted devices.
7. BMS controllers shall be spaced according to manufacturer's requirements with
at least 2 inches minimum between controllers and other devices on panel and 1
inch between controller front and door mounted devices. Ensure adequate space
is allowed for device heat dissipation and for future expansion modules.
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8. Each BMS controller in the enclosure should have its own power toggle switch
as well as a master power switch to shut off power in the entire panel.
9. Each BMS controller in the enclosure should have an inline circuit overload
protection device (Circuit Breaker).
10. BMS controller or control devices shall not be mounted on the sides of the
enclosure.
11. BMS controller enclosures shall not be used as a wire pass-through to an
adjacent panel.
12. Labels inside enclosures shall be attached using adhesive and shall not be hand
written.
D. BMS Controller Enclosure Mounting:
1. The BMS contractor shall mount BMS controller enclosures on walls with
suitable brackets or on a self-supporting stand. Where possible, the top of the
BMS controller enclosures shall be no higher than six feet above the finished
floor. There may some exceptions such as when a fan coil unit controller is
mounted above the ceiling near the actual fan coil unit.
2. BMS controller enclosure locations shall be field coordinated with the
architect/MEP design consultant and adhere to applicable codes and regulations.
3. The BMS contractor shall mount the BMS controller enclosures so that the
panel
3.5 CONTROL DEVICE INSTALLATION
A. Temperature Sensors and Thermostats
1. Wall mounted temperature sensors and thermostats shall be mounted on
electrical boxes and all wire penetrations shall be caulked to prevent thermal
convection.
2. Sensors installed for outside air measurement and pressurization shall be located
to optimize the accuracy of the measurement.
3. Temperature sensors shall be readily accessible and adaptable to each type of
application in such a manner as to permit quick, easy replacement and servicing
without special tools or skills.
4. Calibrate sensors to accuracy specified.
5. Room temperature sensors and thermostats should not be mounted on exterior
walls when other locations are available. Mount center line of room sensor at (5
feet) above finished floor.
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6. Any room temperature sensor or thermostat mounted on an exterior wall shall be
mounted on a thermally insulated sub-base.
7. Mount duct sensors in locations to sense the correct temperature of the air only,
within the vibration and velocity limits of the sensing element. Mount extended
surface element, when used, securely within the duct and position to measure
the best average temperature. Do not locate sensors in dead air spaces or
positions obstructed by ducts or equipment. Thermally isolate elements from
brackets and supports to respond to air temperature only. Surely seal duct
penetrations.
8. String duct averaging sensors between two rigid supports in a serpentine
position to sense average conditions. Thermally isolate the sensing elements
from supports.
9. When possible locate outside air temperature sensors on north side of the
building, away from exhaust hoods, air intakes and other areas that may effect
temperature readings. Provide sun shields to protect outside air sensors from
direct sunlight.
10. Provide guards on temperature sensors and thermostats in entrance hallways,
other public areas, or in locations where device is subject to physical damage.
B. Low Limit Thermostats (Freeze stats)
1. The freezestats used on fan shutdown control shall be wired so as to stop the fan
in both the Auto and Hand positions of the HOA switch. Freezestats shall be
overridden by the fire alarm controls.
2. Install low limit controls where indicated on the drawings or as specified.
Unless otherwise indicated, install sensing element on the downstream side of
heating coils.
3. Mount units using flanges and element holders. Provide duct collars or bushings
where sensing capillary passes through sheetmetal housings or ductwork; seal
this penetration to eliminate air leakage.
4. Distribute (serpentine) sensing element horizontally across the coil to cover
every square foot of coil; on larger coils this may require more than one
instrument. Install controls at accessible location with mounting brackets and
element duct collars where required. Freezestats shall be installed with
capillaries supported by non-metallic standoffs. No part of the capillary shall
otherwise touch the coil or frame. Provide mounting support for the capillary at
least every 36 inches and at the capillary end within 6 inches.
5. Freezestats capillary length shall be (by multiple Freezestat units, if necessary,
to meet this requirement) one foot of capillary for each four square feet of coil
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surface, but in all cases the coil face shall be completely crossed from corner to
corner with the Freezestat mounted at or equal to the highest capillary point so
as to maintain calibration.
C. Air Flow Stations
1. Install air flow stations in accordance with manufacturer's recommendations.
Where units are installed within 10 feet of an elbow or transition, install
straightening vanes upstream/downstream of unit.
2. It is the responsibility of the BMS Contractor to ensure that all sensors are
placed in the measured flow path so as to accurately measure the sensed
variable, when possible.
D. Pressure Sensors
1. Install pressure sensing tips in locations to sense appropriate pressure conditions
and at locations shown on the drawings.
2. Install high pressure side of the differential switch between pump discharge and
check valve.
3. Install snubbers and isolation valves on steam pressure sensing applications.
E. Signal Transmission System Equipment
1. General: Install all system components in accordance with the National
Electrical Code and other applicable codes as necessary in accordance with the
manufacturers’ recommendations.
2. Splices: Splices in shielded and coaxial cables shall consist of terminations and
the use of shielded cable couplers. Terminations shall be in accessible locations.
Cables shall be harnessed with cable ties.
3. Equipment: Fit all equipment contained in cabinets or panels with service loops,
each loop being at least 12 inches long. Equipment for fiber optics system shall
be rack mounted, as applicable, in ventilated, self-supporting, code gauge steel
enclosure. Cables shall be supported for minimum sag.
F. Control Valves
1. Valve operators shall be installed directly above the controlled valve whenever
possible unless rotation is needed to permit maintenance access. However, in no
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case shall the operator be rotated beyond 80° from the vertical centerline of the
valve.
2. Provide pilot positioners where more than two operators are controlled in
sequence and where required to provide sufficient power. Where two or more
valves are operated in sequence, pilot positioners to have adjustable start point
(2-12 psig) and span (5-13 psig).
3.6 DAMPER AND VALVE ACTUATOR APPLICATIONS
A. All valve and damper actuators shall be electronic.
B. Provide a suitably rated and labeled disconnect switch within 6’ of each electric damper
actuator power connection.
3.7 CONTROL SCHEMATICS COORDINATION
A. The control schematics on the engineered drawings imply minimum functional
expectations and may require enhancement and expansion by the BMS Contractor to meet
all specifications.
3.8 O&M DOCUMENTATION REQUIREMENTS
A. The following O&M documentation requirements assume that the General Contractor is
compiling the O&M manuals, with all Subs compiling their own sections, including some
submissions for the Architect/Engineer and Commissioning Agent.
B. These requirements may need to be merged and edited to follow the protocols and scope
of the current agency or project. However, the comprehensiveness and accessibility
described herein shall be maintained.
C. The following O&M manual requirements do not replace O&M manual documentation
requirements elsewhere in these specifications.
1. Division 23 shall compile and prepare documentation for all equipment and
systems covered in Division 23 and deliver this documentation to the General
Contractor for inclusion in the O&M manual.
2. The Commissioning Agent, where applicable, shall receive a copy of the O&M
manuals for review.
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D. Provide two copies of material required in this Section, to be bound similarly but
separately, describing operation, maintenance and servicing requirements of the
HVAC&R control system and associated equipment. Provide the following information
in separate sections each with tab index:
1. Material list
2. Technical literature for all equipment including catalog sheets, calibration,
adjustments and operation instructions, and installation instructions, (the
operator's instruction portion may be separately bound).
3. Hardware and software manuals, including supplied media that is supplied by
the original product developer, for all required features and the controls
application programs themselves, on computers and controllers provided by
vendor.
4. List of spare parts (with model numbers) recommended for purchase by the
Owner.
5. System description and complete sequence of operation.
6. Reduced size (11 inch by 17 inch) copies of record drawings.
7. Input/Output (I/O) summary forms for the system listing all connected analog
and Digital input and output functions and the number types of points. Indicate
spare input/output capacity.
8. Control programs specific to this system.
9. Point-to-point checkout plan used in CA witnessed testing.
10. Glossary of fully expanded point acronyms.
11. Detailed illustrations and complete calibration procedures.
12. Complete troubleshooting procedures and guidelines for all systems.
3.9 GRAPHICS DEVELOPMENT
A. Develop a proposed graphic display panel for each typical system. Depict each
mechanical system and building floor plan by a point-and-click graphic. Review displays
with Owner and incorporate Owner requirements and input.
1. Indicate device values, device setpoints, status, etc. using a numerically keyed
reference linking the graphic panel data points to keyed numbers on a points
data submittal form. Indicate icon links to all secondary graphics display panels.
2. Develop trend graphics as required by Owner.
3. Develop a user interface functional outline. Include each display screen, data to
be displayed, and links to other screens. Outline level hierarchy shall be:
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a. Site
b. Building
c. Floor
d. System
3.10 CONTROLS COMMISSIONING:
A. Complete startup testing to verify operation of the control system before notifying
Engineer and Owner of system demonstration. Provide Engineer and Owner with
schedule for startup testing. Engineer and Owner may have representatives present during
any or all startup testing.
1. Calibrate and prepare for service each instrument, control, and accessory
equipment furnished under this Section.
2. Verify that control wiring is properly connected and free of shorts and ground
faults. Verify that terminations are tight.
3. Enable control systems and verify each input device's calibration. Calibrate each
device according to manufacturer's recommendations.
4. Work with balancing contractor to calibrate all flow monitoring components and
to establish proper setpoints.
B. Demonstrate that all control components operate properly by illustrating their operation
via a Contractor technician operating the host terminal to verify the status of each point
with a separate technician at the point being verified, with two-way communication
between technicians. To verify each point:
1. Verify that binary output devices such as relays, solenoid valves, two-position
actuators and control valves, and magnetic starters, operate properly and that
normal positions are correct.
2. Verify that analog output devices such as actuators are functional, that start and
span are correct, and that direction and normal positions are correct. Check
control valves and automatic dampers to ensure proper action and closure. Make
necessary adjustments to valve stem and damper blade travel.
3. The technician at the terminal shall communicate the status of the point to the
technician at the point. The technician at the point shall verify, through
observation or measurement, whether the status is correct.
4. The technician at the terminal shall then cause the status of the point to change,
and the technician shall verify:
a. The status of the point did change, through observation or measurement.
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b. The status changed in the correct direction.
5. Correct any deficiencies encountered and re-verify. Record any changes in the
project record documents.
6. Prepare a log documenting startup testing of each input and output device, with
technician's initials certifying each device has been tested and calibrated.
7. Verify that system operates according to sequences of operation. Simulate and
observe each operational mode by overriding and varying inputs and schedules.
Tune PID loops and each control routine that requires tuning.
8. Alarms and Interlocks.
a. Check each alarm with an appropriate signal at a value that will trip the
alarm.
b. Trip interlocks using field contacts to check logic and to ensure that
actuators fail in the proper direction.
c. Test interlock actions by simulating alarm conditions to check initiating
value of variable and interlock action.
9. Approximately 6-8 months after the date of Substantial Completion coordinate
with the Engineer and Owner and return to the Facility and complete re-
commissioning including:
a. Modification of the control sequences and operations to fine tune the
systems per the requirements of the Owner and Engineer.
b. Verification of the proper operation of all control components and
software.
c. Modification of the project record documents to reflect all changes and
revisions made to date.
3.11 CONTROL SYSTEM DEMONSTRATION AND ACCEPTANCE
A. Demonstration. Prior to acceptance, perform the following performance tests to
demonstrate system operation and compliance with specification after and in addition to
tests specified in Article “Control System Commissioning.” Provide Engineer with log
documenting completion of startup tests.
1. Engineer and Owner will be present to observe and review system
demonstration. Notify Engineer and Owner at least 14 calendar days before
system demonstration begins.
2. Demonstration shall follow process submitted and approved under Article
“Submittals.” Complete approved checklists and forms for each system as part
of system demonstration.
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3. Demonstrate actual field operation of each sequence of operation. Provide at
least two persons equipped with two-way communication. Demonstrate
calibration and response of any input and output points requested by Engineer
and Owner. Provide and operate test equipment required to prove proper system
operation.
4. Demonstrate compliance with sequences of operation through each operational
mode.
5. Demonstrate complete operation of operator interface.
6. Demonstrate each of the following.
a. Loop response. Supply graphical trend data output showing each loop's
response to a setpoint change representing an actuator position change of
at least 25% of full range. Trend sampling rate shall be from 10 seconds
to 3 minutes, depending on loop speed. Each sample's trend data shall
show setpoint, actuator position, and controlled variable values.
Engineer will require further tuning of each loop that displays
unreasonably under- or over-damped control.
b. Trend logs for any system requested by Engineer or Owner. Trend data
shall indicate setpoints, operating points, valve positions, and other data
as specified. Each log shall cover three 48-hour periods and shall have a
sample frequency not less than 5 minutes. Logs shall be accessible
through system's operator interface and shall be retrievable for use in
other software programs as specified.
7. Tests that fail to demonstrate proper system operation shall be repeated after
Contractor makes necessary repairs or revisions to hardware or software to
successfully complete each test.
B. Acceptance. After tests described in this specification are performed to the satisfaction of
both Engineer and Owner, Engineer will accept control system as meeting completion
requirements. Engineer may exempt tests from completion requirements that cannot be
performed due to circumstances beyond Contractor's control. Engineer will provide
written statement of each exempted test. Exempted tests shall be performed as part of
warranty.
1. System shall not be accepted until completed demonstration forms and
checklists are submitted and approved.
3.12 CLEANING
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A. On completion of work in each area, clean work debris and equipment. Clean enclosure
interiors and exteriors of all dust and debris.
B. On completion of work, check equipment furnished under this Section for paint damage.
Repair damaged factory-finished paint to match adjacent areas. Replace deformed
cabinets and enclosures with new material.
3.13 TRAINING OF OWNER PERSONNEL
A. Training Plan: The BMS Contractor shall provide designated Owner personnel training
on the BMS installed. The intent is to clearly and completely instruct the Owner on all the
capabilities of the control system. The trainers are expected to be fully prepared and
experienced in self-paced training, web-based or computer-based training, classroom
training, or a combination of training methods. Participants will attend one or more of
sessions, depending on knowledge level required.
1. Day-to-Day Operators (Training I & III).
2. System Managers and Administrators (Training I, II & III).
B. Training I. Control System. The first training shall consist of 8 hours of actual training.
This training may be held on-site. Upon completion, each student, using appropriate
documentation, should be able to perform elementary operations and describe general
hardware architecture and functionality of the system and accomplish the following
objectives:
1. Proficiently operate system
2. Understand control system architecture and configuration
3. Understand system components and functions
4. Understand system operation, including system control and optimizing routines
(algorithms)
5. Operate workstation and peripherals
6. Log on and off system
7. Access graphics, point reports, and logs
8. Adjust and change system setpoints, time schedules, and holiday schedules
9. Recognize common HVAC system malfunctions by observing system graphics,
trend graphs, and other system tools
10. Understand system drawings and Operation and Maintenance manual
11. Understand job layout and location of control components
12. Access data from controllers
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13. Operate portable operator's terminals
14. Use of remote access to the system via web access.
C. Training II. Building Systems. The second session shall be held on-site for a period of
12 hours of actual hands-on training after the completion of system start-up. The training
shall be broken into 3-4 hour sessions held over a period of approximately 3 weeks (one
session per week). When appropriate the session shall include instruction on:
1. Security levels, alarms, system start-up, shut-down, power outage and restart
routines.
2. Use of keypad or plug-in laptop computer at the zone level.
3. Create and change system graphics
4. Create, delete, and modify alarms, including configuring alarm reactions
5. Create, delete, and modify point trend logs (graphs) and multi-point trend graphs
6. Configure and run reports
7. Add, remove, and modify system's physical points
8. Create, modify, and delete application programming
9. Add operator interface stations
10. Add a new controller to system
11. Download firmware and advanced applications programming to a controller
12. Configure and calibrate I/O points
13. Maintain software and prepare backups
14. Interface with job-specific, third-party operator software
15. Add new users and understand password security procedures
END OF SECTION 23 09 23
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HYDRONIC PIPING 23 21 13-1
REVISION HISTORY
Rev Description of ChangeEffective Date
0 60% Progress Print August 16, 2019
1 Bid Sit January 6, 2020
SECTION 23 21 13 - HYDRONIC PIPING
PART 1 – GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of Contract, including General and
Supplementary Conditions and Division 1 Specification sections, apply to this
Section.
1.2 SUMMARY
A. This Section includes piping systems for hot water heating, chilled water cooling,
condensate drain piping, or any other HVAC water piping system. Piping
materials and equipment specified in this Section include:
1. Pipes, fittings, and specialties;
2. Cleaning chemical.
B. Test reports specified in Part 3 of this Section.
1.3 SUBMITTALS
A. Product Data: Include rated capacities of selected models, operating weights,
furnished specialties and accessories, flow and pressure drop curves, and
installation instructions for each of the following:
1. Pipe, including the intended use.
2. Pipe fittings, including the intended use.
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B. Reports and Certifications: Provide signed reports and certifications documenting
test conditions, installation acceptance, treatment chemicals, concentrations and
observations for the following:
1. Pressure tests report for hydronic piping systems within buildings.
2. Chemical cleaning report for hydronic systems at completion of chemical
cleaning work.
1.4 QUALITY ASSURANCE
A. Regulatory Requirements: comply with the provisions of the following:
1. ASME B 31.9 “Building Services Piping” for materials, products, and
installation.
PART 2 – PRODUCTS
2.1 PIPE, FITTING, AND JOINT MATERIALS
A. General: Refer to Part 3 Article “PIPE APPLICATIONS” for identification of
where the below materials are used.
B. Annealed Temper Copper Tubing:
ITEM SIZE ASTM SPEC NO. MATERIAL WEIGHT & TYPE
Pipe 3" B88 copper Type L, drawn
Fittings 3"Wrought copper or
cast bronzeANSI B16.22 & B16.18
BoltsPer flange
standard
A193, grade B7
carbon steel
Hex head (ANSI B18.2.1), B1.1,
class 2A course thread
NutsPer flange
standard
A194, Grade 2H,
Carbon steel
Heavy hex (ANSI B18.2.2),
B1.1,class 2B course thread
GasketsPer flange
standard1/16" Compound fiber
C. Solder Filler Metals: Refer to Division 23 Section, “BASIC PIPING
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MATERIALS AND METHODS”.
2.2 GENERAL DUTY VALVES
A. General duty valves (i.e., globe, check, ball, and butterfly valves) are specified in
Division 23 Section “HVAC VALVES”. Special duty valves are specified below
by their generic name; refer to Part 3 Article “VALVE APPLICATION” for
specific uses and applications for each valve specified.
PART 3 – EXECUTION
3.1 PIPE APPLICATIONS
A. All water and glycol systems with operating temperatures of 40to 210: Install
Type L, drawn copper tubing with wrought copper fittings and solder joints for 2"
and smaller, above ground, within building.
B. All condensate drain systems: Install Type L, drawn copper tubing with wrought
copper drainage pattern fittings and solder joints for 2" and smaller, above
ground, within building.
3.2 PIPING INSTALLATIONS
A. General: Refer to Division 23 Section, “BASIC PIPING MATERIALS AND
METHODS” for general piping installation requirements.
B. Install dielectric waterway fittings or unions to join dissimilar metals, refer to
Division 23 Section, “BASIC PIPING MATERIALS AND METHODS”.
3.3 HANGERS AND SUPPORTS
A. General: Refer to Division 23 Section, “HANGERS AND SUPPORTS”, for
hangers, supports, and anchors.
3.4 PIPE JOINT CONSTRUCTION
A. General: Refer to Division 23 Section, “BASIC PIPING MATERIALS AND
METHODS” for welded, threaded, brazed, grooved and soldered requirements.
3.5 VALVE APPLICATIONS
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A. General: Refer to Division 23 Section, “HVAC VALVES”, for general duty
valves.
B. Install shut off duty valves at each branch connection to mains, at connection to
each piece of equipment, and elsewhere as indicated.
C. Install drain valves at low points in mains, risers, branch lines, and elsewhere as
required for system drainage.
3.6 HYDRONIC SPECIALTIES INSTALLATION
A. Install air vents at high points in the system, heat transfer coils, and elsewhere as
required for system air venting.
B. Install balancing valves per the manufacturer’s written instructions and the
following criteria:
1. A minimum of 5 pipe diameters upstream and 2 pipe diameters
downstream of the balancing valve to a pipe fitting or another valve.
2. A minimum of 10 pipe diameters upstream of the valve to a pump and a
minimum of 5 pipe diameters downstream of the valve to a pipe fitting or
another valve when the balancing valve is downstream to a pump.
3.7 FIELD QUALITY CONTROL
A. Preparation for testing: Prepare hydronic piping in accordance with ASME
B-31.9 and as follows:
1. Leave joints uninsulated and exposed for examination during the test.
2. Provide temporary restraints for expansion joints that cannot sustain the
reactions due to test pressure. If temporary restraints are not practical,
isolate expansion joints from testing.
3. Flush system with clean water. Clean strainers.
4. Isolate equipment that is not to be subjected to the test pressure from the
piping. If a valve is used to isolate the equipment, its closure shall be
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capable of sealing against the test pressure without damage to the valve.
Flanged joints at which blinds are inserted to isolate equipment need not
be tested.
5. Install relief valve set at a pressure no more than 25% higher than the test
pressure, to protect against damage by expansion of liquid or other source
of over pressure during the test.
B. Testing: Test hydronic piping as follows:
1. Use ambient temperature water as the testing medium, except where there
is a risk of damage due to freezing. Another liquid may be used if it is safe
for workmen and compatible with the piping system components.
2. Use vents installed at high points in the system to release trapped air while
filling the system. Use drains installed at low points for complete removal
of the liquid.
3. Examine system to see that equipment and parts that cannot withstand test
pressures are properly isolated. Examine test equipment to ensure that it is
tight and that low-pressure filling lines are disconnected.
4. Subject piping system to a hydrostatic test pressure of 125 psig. The test
pressure shall not exceed the maximum pressure for any vessel, pump,
valve, or other component in the system under test. Make a check to
verify that the stress due to pressure at the bottom of vertical runs does not
exceed either 90% of specified minimum yield strength, or 1.7 times the
"SE" value in Appendix A of ASME B31.9, Code For Pressure Piping,
Building Services Piping.
5. After the hydrostatic test pressure has been applied for at least 10 minutes,
examine piping, joints, and connections for leakage. Eliminate leaks by
tightening, repairing, or replacing components as appropriate, and repeat
hydrostatic test until there are no leaks and pressure holds for a period of
four hours. Contractor to complete test report for signature by Owner.
Coordinate with Owner for witnessing the test.
3.8 ADJUSTING AND CLEANING
A. Clean and flush hydronic piping systems. Remove, clean, and replace strainer
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screens. After cleaning and flushing hydronic piping system, but before
balancing, remove disposable fine mesh strainers in pump suction diffusers.
3.9 INSTALLATION OF WATER TREATMENT
A. General: Furnish chemicals recommended by water treatment system
manufacturer for treating hydronic systems. Provide only chemicals that are
compatible with materials of hydronic systems and equipment. Install water
treatment in accordance with chemical treatment manufacturer’s written
instruction.
B. Chemical treatment products specified herein are products of Vermont Boiler
Systems. Provide specified products or products of an approved alternate
chemical treatment company.
C. Hydronic system:
1. After system has been tested for leaks, and piping systems flushed clean of
all grit, fillings, dope, etc., fill the system with clean water and add Fernox
Cleaner F3 or equivalent to remove sludge, scale, flux and other debris.
Add cleaner at the recommended concentration and temperature and
circulate for the recommended cleaning period. Dump product to drain
and flush until TDS of the system water is within 10% of the raw water
and clean all strainers. Drain the cleaning water and flushing water to a
location a directed by the Owner.
2. After cleaning hydronic system add sufficient Fernox Protector F1 or
equivalent to provide long term protection of the hydronic system against
corrosion and lime scale formation. Add protector at the recommended
rate for non-glycoled hydronic systems and verify concentration with the
Fernox Protector test kit to be turned over to Owner.
3. Verify the system pH and adjust as required to achieve a value near the
mid-point of the boiler manufacturer recommended range. The system
fluid pH must be maintained over the life of the system. The pH shall be
checked annually by the Owner.
4. Provide a chemical treatment analysis and submit a treatment report for
each hydronic system at the completion of the water treatment work.
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3.10 COMMISSIONING
A. Fill system
B. Before operating the system perform these steps:
1. Open valves to full open position.
2. Remove and clean strainers.
3. Check pump for proper rotation direction and correct improper wiring.
4. Check air vents at high points of systems and bleed air completely.
5. Check and set operating temperatures of heating system to design
requirements (refer to drawing schedules).
6. Lubricate motors and bearings.
END OF SECTION 23 21 13
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HVAC PUMPS 23 21 23-1
REVISION HISTORY
Rev Description of ChangeEffective Date
0 60% Progress Print August 16, 2019
1 Bid Set January 6, 2020
SECTION 23 21 23 - HVAC PUMPS
PART 1 - GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of Contract, including General and
Supplementary Conditions and Division 1 Specification Sections, apply to this
Section.
1.2 SUMMARY
A. The Section includes pumps for HVAC service. The scope of HVAC pump
requirements is indicated on Drawings and schedules, and by requirements of this
Section.
1.3 SUBMITTALS
A. Refer to Division 1 and Division 23 Section “BASIC MECHANICAL
REQUIREMENTS” for administrative and procedural requirements for
submittals.
B. General: Submit the following:
1. Product data including certified performance curves of selected models
indicating selected pump's operating point, materials of construction, weights ,
dimensions, furnished specialties, and accessories.
2. Shop drawings showing installation of foundation bolts and other anchorages
for base mounted pumps.
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3. Pump alignment report specified in Part 3 of this Section.
4. Maintenance data for HVAC pumps for inclusion in Operating and
Maintenance Manual specified in Division 1 and Division 23 Section “BASIC
MECHANICAL REQUIREMENTS”.
1.4 QUALITY ASSURANCE
A. Hydraulic Institute Compliance: Design, manufacture, and install HVAC pumps
in accordance with “Hydraulic Institute Standards”.
B. National Electrical Code Compliance: Provide components complying with
NFPA 70 “National Electrical Code”.
C. NEMA Compliance: Provide electric motors and components that are listed and
labeled NEMA.
D. Single Source Responsibility: Obtain HVAC pumps from a single manufacturer.
E. HVAC pumps shall be tested and verified for performance. Certifications of
performance shall be made available if requested.
F. Design Criteria: The Drawings indicate sizes, profiles, connections, and
dimensional requirements of HVAC pumps, and are based on the specific
manufacturer types and models indicated. Pumps having equal performance
characteristics by other manufacturers may be considered, provided deviations in
dimensions and profiles and efficiencies do not change the design concept or
intended performance as judged by the Engineer.
1.5 DELIVERY, STORAGE, AND HANDLING
A. Preparation for Shipping: After assembly and testing, clean flanges and exposed
machined metal surfaces and treat with an anticorrosion compound. Protect
flanges, pipe openings, and nozzles with covers or plugs.
B. Store pumps in a dry location. Retain shipping flange protective covers and
protective coatings during storage.
C. Protect bearings and couplings against damage from sand, grit, and other foreign
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matter.
PART 2 - PRODUCTS
2.1 PUMPS, GENERAL
A. Pumps and Circulators: Factory-assembled and factory-tested. Fabricate casings
to allow removal and replacement of impellers without necessity of disconnecting
piping. Type, sizes, and capacities shall be as scheduled on Drawings.
B. Motors: Refer to Division 23 section, “ELECTRICAL REQUIREMENTS FOR
MECHANICAL EQUIPMENT” for motor requirements.
C. Apply factory finish paint to assembled, tested units prior to shipping.
2.2 WET ROTOR CIRCULATOR PUMPS
A. Pumps shall be of the in-line wet rotor design without shaft seal. The pump,
motor, and variable speed drive shall be an integral product designed and built by
the same manufacturer. Pumps shall include single phase electronic converters
and wireless communication capability. Pumps shall include a user interface and
graphical display.
B. The pumps shall be certified and listed by a Nationally Recognized Test
Laboratory (NRTL) for U.S. and Canada and shall bear the emblem of UL, CSA
or ETL as required.
C. The pumps shall be factory performance and hydrostatic tested as a complete unit
prior to shipment. Pump sizes and capacities shall be as scheduled on Drawings.
The pumps shall be rated for a minimum 145 psig and 230 deg F. Pumps shall be
rated for continuous operation with a minimum water temperature of 203 deg F.
D. Pump Construction
1. Pump Housing: Stainless steel.
2. Impellers: Composite.
3. Rotor Can: Stainless steel.
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4. Rotor Cladding and Bearing Plate: 316 Stainless steel.
5. Stator Housing: Aluminum alloy.
6. Shaft and Radial Bearings: Ceramics.
7. Thrust Bearing: Carbon.
8. Gaskets: EPDM.
9. Control Box: Polycarbonate.
E. Motor:
1. Motor shall permanent magnet ECM motor.
2. The motor shall be rated for 115, 208 or 230 volt, single phase, 60 Hz power
supply as scheduled on Drawings. Motor shall be rated to operate without
damage with minimum voltage variances of +/-10%.
3. The motor shall be cooled by the pumped fluid and electronics shall be self-
ventilating air cooled to the ambient air.
4. Minimum insulation class for the motor shall be Class F.
F. Variable speed mode
1. The pumps shall have three constant pressure control modes, an LED display
and push button controls
G. Manufacturers:
1. Grundfos ALPHA 1 Series
2. Or equal
PART 3 - EXECUTION
3.1 EXAMINATION
A. Examine areas, equipment foundations, and conditions, with Installer present, for
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compliance with requirements for installation tolerances and other conditions
affecting performance of HVAC pumps.
B. Examine rough in for piping systems to verify actual locations of piping
connections prior to installation.
C. Examine equipment foundations and inertia bases for suitable conditions where
pumps are to be installed.
D. Do not proceed until unsatisfactory conditions have been corrected.
3.2 INSTALLATION
A. General: Comply with the manufacturer's written installation and alignment
instructions.
B. Install pumps in locations and arranged to provide access for periodic
maintenance, including removal of motors, impellers, couplings, and accessories.
C. Support pumps and piping separately so that the weight of the piping system does
not rest on the pump.
D. Install variable speed wet rotor type pumps with motor shaft in a horizontal
position with no exceptions in accordance with manufacturer instructions.
E. Suspend inline pumps using threaded hanger rod and vibration isolation hangers
of sufficient size to support the weight of the pump independent from the piping
system.
3.3 CONNECTIONS
A. Install HVAC pumps with piping connections and valving as indicated on
Drawings.
B. Electrical power wiring and connections are specified in Division 26 sections.
C. Control wiring and connections are specified in Division 23 Section “FACILITY
MANAGEMENT SYSTEM”.
3.4 COMMISSIONING
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A. Final Checks Before Start-Up: Perform the following preventative maintenance
operations and checks before start-up:
1. Verify the HVAC pump installation is completed in accordance with the
manufacturer’s requirements.
2. Disconnect coupling and check motor for proper rotation. Rotation shall
match direction of rotation marked on pump casing.
3. Check that pump is free to rotate by hand. For pumps handling hot liquids,
pump shall be free to rotate with the pump hot and cold. If the pump is bound
or even drags slightly, do not operate the pump until the cause of the trouble is
determined and corrected.
B. Start HVAC pumps in accordance with the manufacturer’s instructions and the
following:
1. Open the system line valves to prevent operated against dead shutoff.
2. Start the motor.
3. Check the general mechanical operation of the pump and motor including the
pump seal.
C. Refer to Division 23 Section “TESTING, ADJUSTING, AND BALANCING” for
detailed requirements for testing, adjusting, and balancing hydronic systems.
END OF SECTION 23 21 23
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METAL DUCTWORK AND ACCESSORIES 23 30 00 - 1
REVISION HISTORY
Rev Description of ChangeEffective Date
0 60% Progress Print August 16, 2019
1 Bid Set January 6, 2020
SECTION 15891 - METAL DUCTWORK & ACCESSORIES
PART 1 GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of Contract, including General and
Supplementary Conditions and Division-1 Specification sections, apply to work
of this Section.
1.2 SUMMARY
A. This Section includes metal ductwork and accessories. The scope of metal
ductwork and accessories requirements is indicated on Drawings and schedules,
and by requirements of this Section.
B. Drawings: The intent of the Specifications and Drawings is to have a “complete”
system which operates as described and required. The Drawings should not be
considered as complete with every detail, coordination and method of installation.
Provide all work and coordination with all other building services as required for
a complete project.
1.3 SUBMITTALS
A. Product Data: Submit manufacturer's technical product data and installation
instructions for the following:
1. Manual dampers.
2. Control dampers.
3. Turning vanes.
4. Duct hardware.
5. Duct access doors.
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6. Flexible connections.
7. Registers, grilles and diffusers.
8. Louvers.
9. Flexible ductwork.
10. Duct sealant.
11. Air terminals.
12. Factory built grease duct components.
B. Sheet Metal Shop Standards: Submit ductwork Fabrication Shop Standards
Manual indicating materials, gauges, reinforcing, and similar information for
ductwork, fittings, accessories, etc., for the required sizes and static pressure
classes to fully demonstrate compliance with SMACNA “HVAC Duct
Construction Standards, Metal and Flexible, Third Edition (2005)”. The Manual
shall be shop specific.
C. Duct Leakage Testing:
1. Procedures and Qualifications: The first submittal, to be made in a timely
manner to allow review by Architect/Engineer in advance of
commencement of actual testing. The first submittal shall consist of the
following:
a. Procedures and Agenda: Submit a synopsis of the testing
procedures and agenda proposed to be used for this project.
b. Sample Forms: Submit sample test report forms.
c. Calibration Reports: Submit proof that all required
instrumentation has been calibrated to tolerances specified in the
referenced standards, and within the device manufacturer’s
published calibration period prior to starting the project.
d. Contractor qualifications: Submit evidence of testing agency
qualifications to complete the required testing.
2. Test Reports: The second submittal, to be made after the first submittal
has been satisfactorily reviewed, shall be made after the testing work has
been performed.
a. Certified Reports: Submit testing reports bearing the signature of
the test lead technician. The reports shall be certified proof that
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the systems have been tested in accordance with the referenced
standards and are an accurate representation of the leakage rates
observed. Final reports shall be type written, organized and
formatted as specified below.
b. Report Format: Report forms shall be those included in the first
submittal. Bind report forms complete with schematic systems
diagrams and other data.
c. Report Contents: Inside cover sheet to identify testing agency,
Contractor, Owner, Architect, Engineer, and Project; including
addresses, contact names, and telephone numbers. Provide a
listing of the instruments used for the procedures along with the
proof of calibration. The remainder of the report shall contain the
report forms for each respective item and system. Prepare a
schematic diagram for each tested section of the duct system to
accompany each respective report form.
1.4 QUALITY ASSURANCE
A. Manufacturer's Qualifications: Firms regularly engaged in manufacture of metal
ductwork, products and accessories of types, materials, and sizes required, whose
products have been in satisfactory use in similar service for not less than 3 years.
B. Installer's Qualifications: Firm with at least 3 years of successful installation
experience on projects with metal ductwork systems similar to that required for
the project.
C. Codes and Standards:
1. SMACNA Standards:
a. Comply with SMACNA “HVAC Duct Construction Standards,
Metal and Flexible, Third Edition (2005)” for fabrication and
installation of metal ductwork.
b. Comply with SMACNA “HVAC Air Duct Leakage Test Manual”
for sealing requirements of metal ductwork.
c. Comply with SMACNA “Duct Cleanliness for New Construction
Guidelines” (latest edition).
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d. Comply with SMACNA “Guideline on Through-Penetration Fire-
stopping (latest edition).
e. Comply with SMACNA “Fire, Smoke and Radiation Damper
Installation Guide for HVAC Systems” (latest edition).
2. ASHRAE Standards: Comply with ASHRAE Handbook, “Systems and
Equipment”, Latest Edition, “Duct Construction”, for fabrication and
installation of metal ductwork and accessories.
3. NFPA Standards:
a. Comply with NFPA 90A, “Standard for the Installation of Air
Conditioning and Ventilating Systems”.
b. Comply with NFPA 96, “Standard for Ventilation Control and Fire
Protection of Commercial Cooking Operations.”
c. Comply with NFPA 80, Standard for Fire Doors and Other
Opening Protectives.
d. Comply with NFPA 105, Standard for Smoke Door Assemblies
and Other Opening Protectives.
4. ANSI/UL Compliance:
a. Construct, test, and label fire dampers in accordance with
ANSI/UL Standard 555 “Standard for Safety: Fire Dampers,”
latest Edition.
b. Construct, test and label ceiling radiation dampers in accordance
with ANSI/UL Standard 555C, “Standard for Safety Ceiling
Dampers”, latest Edition.
c. Construct, test and label smoke dampers in accordance with
ANSI/UL Standard 555S, “Standard for Safety Smoke Dampers”,
latest Edition.
d. Construct, test and label flexible air ducts in accordance with
ANSI/UL Standard 181 “Standard for Safety Factory-Made Air
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Ducts and Connectors”, latest Edition.
e. Construct, test and label factory built grease ducts and grease duct
assemblies in accordance with UL 1978 “Grease Ducts.”
f. ANSI/UL 181, “Standard for Safety Factory-Made Air Ducts and
Air Connectors.”
g. ANSI/UL 181A, “Standard for Safety Closure Systems for Use
with Rigid Air Ducts.”
h. “ANSI/UL 181B, “Standard for Safety Closure Systems for Use
with Flexible Air Ducts and Air Connectors.”
5. ARI Compliance: Test and rate air outlets and inlets in accordance with
ARI 650, “Standard for Air Outlets and Inlets”.
6. ASHRAE Compliance: Test and rate air outlets and inlets in accordance
with ASHRAE 70, “Method of Testing the Performance of Air Outlets and
Inlets”.
7. ADC Standards: Install flexible ducts in accordance with the “Flexible
Duct Performance and Installation Standards”, latest Edition.
8. AMCA Compliance: Test and rate louvers in accordance with AMCA
500-L-12, “Laboratory Methods of Testing Louvers for Rating.”.
1.5 DELIVERY, STORAGE, AND HANDLING
A. Protection: Protect shop-fabricated and factory-fabricated ductwork, air devices,
accessories and purchased products from damage during shipping, storage and
handling. Prevent end damage and prevent dirt and moisture from entering
ductwork and accessories.
B. Storage: Store ductwork and accessories inside and protect from weather. Where
necessary to store outside, store above grade and enclose with waterproof and
dustproof wrapping.
C. All ductwork shall be fabricated, transported, stored, handled, installed, and
protected in accordance with the recommendations and requirements set forth in
the SMACNA Duct Cleanliness for New Construction Guidelines. The
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Mechanical and Sheet-metal Contractors shall be responsible to ensure that every
effort is made to maintain cleanliness throughout the ductwork systems.
1.6 DESIGN CRITERIA
A. Static Pressure Classifications: Except where otherwise indicated, construct duct
systems to the following pressure classifications:
1. Supply ducts and other ducts at discharge side of fans: 3" water gauge,
positive pressure.
2. Return ducts at inlet side of fans: 3" water gauge, negative pressure.
3. Exhaust ducts at inlet side of fans: 3" water gauge, negative pressure.
B. Seal Class – New Ducts: Seal all new sheet metal ducts to SMACNA Seal Class
‘A’.
C. Seal Class – Existing Ducts: Seal all existing sheet metal ducts to SMACNA Seal
Class ‘A’.
PART 2 PRODUCTS
2.1 DUCTWORK MATERIALS
A. Exposed Ductwork Materials: Where ductwork is indicated to be exposed to view
in occupied spaces, provide materials that are free from visual imperfections
including pitting, seam marks, roller marks, oils, stains and discolorations, and
other imperfections, including those that would impair painting.
B. Sheet Metal: Except as otherwise indicated, or specified fabricate ductwork from
galvanized sheet steel complying with ASTM A 924 and A 653, lock-forming
quality, with G 90 zinc coating in accordance with ASTM A 90.
2.2 MISCELLANEOUS DUCTWORK MATERIALS
A. General: Provide miscellaneous materials and products of types and sizes
indicated and, where not otherwise indicated, provide type and size required to
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comply with ductwork system requirements including proper connection of
ductwork and equipment.
B. Duct Sealant - General: ANSI/UL 181A or ANSI/UL 181B listed, low V.O.C,
non-hardening, non-migrating water based mastic or liquid elastic sealant, type
applicable for fabrication/installation detail, as compounded and recommended by
manufacturer specifically for sealing joints and seams in ductwork.
1. Hardcast: Flex Grip
2. United McGill: United Duct Sealer
C. Duct Sealant, Two Part System: ANSI/UL 181A or ANSI/UL 181B listed, low
V.O.C., two-part system consisting of an adhesive activator and a gypsum
impregnated fiber tape. Materials shall be suitable for use outdoors, and
recommended by manufacturer specifically for sealing joints and seams in
ductwork.
1. Hardcast: DT-5300 tape and RTA-50 adhesive
2. United McGill: Uni-cast
D. Duct Sealant, Flange Type: Continuous butyl rubber extrusion specifically
designed for use in flanged duct joints. Product shall be listed by ANSI/UL to
have a flame spread rating of less than 25 and smoke developed rating of less than
50.
1. Hardcast: Flange Grip #1902-FR
E. Ductwork Support Materials: Provide hot-dipped galvanized steel fasteners,
anchors, rods, straps, trim and angles for support of ductwork.
2.3 RECTANGULAR DUCT FABRICATION
A. General: Except as otherwise indicated, fabricate rectangular ducts with
galvanized sheet steel, in accordance with SMACNA “HVAC Duct Construction
Standards” Tables 2-1 through 2-49, including associated details. Conform to the
requirements in the referenced standard for metal thickness, reinforcing types and
intervals, tie rod applications, and joint types and intervals.
B. Fabricate rectangular ducts in lengths appropriate to reinforcement and rigidity
class required for pressure classification.
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C. Provide materials that are free from visual imperfections such as pitting, seam
marks, roller marks, oils, stains, and discoloration.
D. Cross Breaking or Cross Beading: Cross break or bead duct sides that are 11" and
larger and are 20 gauge or less, with more than 4 sq. ft. of unbraced panel area, as
indicated in SMACNA “HVAC Duct Construction Standard,” Figure 2-9,
regardless of insulation.
E. Fittings: Provide long radius type fittings, radius to centerline of duct is 1 ½
times duct width.
F. Fabricate elbows, transitions, offsets, branch connections, and other duct
construction in accordance with SMACNA “HVAC Metal Duct Construction
Standard,” Figures 4-1 through 4-9, with the following modifications:
1. Figure 4-2
a. Type RE1 – Square throat is not permitted.
b. Types RE4, 6, 7, 8, 9, & 10 are not permitted.
2. Figure 4-3
a. Use single thickness vanes with trailing ends, SP=1½”.
3. Figure 4-7
a. Offset types 1& 2 are not allowed.
b. Minimum bell mouth radius shall be 1½”.
4. Figure 4-8
a. Figures A & C are not allowed.
G. Fabricate duct fittings to match adjoining ducts, and to comply with duct
requirements as applicable to fittings. Limit angular tapers to 30 for contracting
tapers and 20 for expanding tapers.
H. Fabricate ductwork with accessories installed during fabrication to the greatest
extent possible.
I. Duct joining system shall be Ductmate, Ward Industries, Carlisle, MEZ Industries
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or equal Transverse Duct Connection (TDC) for all ducts with longest side over
24". Above systems are optional for smaller duct systems. Above systems are to
be used with galvanized sheet steel and aluminum sheet. Ducts fabricated of
stainless steel shall have welded joints.
J. Button punch snap lock (figure 2-2, type L-2) and internal standing seam joints
(figure 2-7) are not allowed.
K. Duct sizes indicated on the Drawings are the net free area. Where duct liner
and/or double wall ductwork is installed, increase the duct size accordingly.
2.4 ROUND AND SPIRAL DUCT FABRICATION
A. General: Except as otherwise indicated, fabricate round ducts with galvanized
sheet steel, in accordance with SMACNA “HVAC Duct Construction Standards,”
Tables 3-1 through 3-14 and figures 3-1 through 3-6. Conform to the
requirements in the referenced standard for metal thickness and joint types.
Modify the above tables and figures as follows:
1. Table 3-1
a. All elbows, regardless of duct velocity, shall be 1½ radius to duct
diameter.
2. Figure 3-2
a. Seam types RL-3, 6A, 6B and 7 are not allowed.
3. Figure 3-4
a. Adjustable elbows are not allowed.
4. Figure 3-5
a. Non lateral taps may be used only where spatial conditions do not
allow lateral taps.
5. Figure 3-6
a. Replace the transition length formula listed (L2=A-B) with the
following: Limit angular tapers to 30 for contracting tapers and
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20 for expanding tapers.
B. Provide materials that are free from visual imperfections such as pitting, seam
marks, roller marks, oils, stains, and discoloration.
C. Fabricate ductwork with accessories installed during fabrication to the greatest
extent possible.
D. Diverging-Flow Fittings: Fabricate with a reduced entrance to branch taps with no
excess material projecting from the body onto branch tap entrance.
E. Fitting Gauges: One gauge heavier than the duct size requirement, 22 gauge
minimum.
F. Manufacturers: Subject to compliance with requirements, provide spiral
ductwork of one of the following:
1. Semco Mfg., Inc.
2. United Sheet Metal Div., United McGill Corp.
3. Spirosafe, division of Lindlab
4. Spiro Metal, Inc.
2.5 DAMPERS
A. Manual Dampers: Provide dampers of single blade type or multi blade type,
constructed in accordance with SMACNA “HVAC Duct Construction Standards”,
Figures 7-4 and 7-5, amended as follows:
1. Figure 7-4
a. Figure A is not allowed, use only figure B regardless of duct size.
2. Manufacturers: Subject to compliance with requirements, provide
dampers of one of the following:
a. Greenheck
b. Ruskin
B. Provide end bearings for all systems requiring Seal Class A regardless of pressure
class.
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C. Control Dampers:
1. Provide dampers with parallel blades for 2 position control, or opposed
blades for modulating control. Construct blades of 16 gauge steel, provide
heavy duty molded self lubricating nylon bearings, 1/2" diameter steel
axles spaced on 9" centers. Construct frame of 2" x 1/2" x 1/8" steel
channel for face areas 25 sq. ft. and under; 4" x 1¼" x 16 gauge channel
for face areas over 25 sq. ft. Provide galvanized steel finish.
2. Motor operated control dampers shall be furnished by the automatic
temperature controls contractor and installed by the sheet metal contractor.
3. Manufacturers: Subject to compliance with requirements, provide
dampers of one of the following:
a. TAMCO with SW (saltwater) construction features
2.6 DUCT HARDWARE
A. General: Provide duct hardware, manufactured by one manufacturer for all items
on project, for the following:
B. Quadrant Locks: Provide for each manually controlled damper, quadrant lock
device on one end of shaft; and end bearing plate on other end. Provide extended
quadrant locks and extended end bearing plates for externally insulated ductwork.
C. Manufacturers: Subject to compliance with requirements, provide duct hardware
of one of the following:
1. Duro Dyne National Corp.
2. Ventfabrics, Inc.
3. Young Regulator Co.
2.7 REGISTERS, GRILLES, AND DIFFUSERS
A. General: Except as otherwise indicated, provide manufacturer's standard
diffusers, registers and grilles where shown; of size, shape, capacity and type
indicated; constructed of materials and components as indicated, and as required
for complete installation.
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B. Performance: Provide diffusers, registers and grilles that have, as minimum,
throw, pressure drop, and noise criteria ratings for each size device as listed in
manufacturer's current data. The products specified on the Drawings are the basis
of the design for this project, products of alternate manufacturer’s must meet the
basis of design. All performance data must be per requirements of ARI 650 and
ASHRAE Standard 70.
C. Compatibility: Provide diffusers, registers and grilles with border styles that are
compatible with adjacent wall and ceiling systems, and that are specifically
manufactured to fit into wall and ceiling construction with accurate fit and
adequate support. Refer to general construction drawings and specifications for
types of wall and ceiling construction that will contain each type of register,
grille, and diffuser. It is the Contractor’s responsibility to fully coordinate
installation requirements for various surfaces.
D. Types: Provide diffusers, registers and grilles of type, capacity, and with
accessories and finishes as listed on the Drawing schedule and as described here.
E. Round Ceiling Diffuser: Round face and neck, aluminum construction, adjustable
inner assembly with a minimum of 2 cones, flush surface mount, maximum depth
from ceiling in open position is 3 inches. Provide with opposed blade or butterfly
damper.
1. Metalaire Series 3100
2. Titus Series TMRA-AA
3. Anemostat Series C
4. Price Series RCD
5. Nailor Model 6300R
6. Tuttle & Bailey Series VJR
PART 3 EXECUTION
3.1 GENERAL
A. Inspection: Examine areas and conditions under which metal ductwork, air inlets
and outlets and accessories are to be installed. Do not proceed with work until
unsatisfactory conditions have been corrected in manner acceptable to Installer.
B. Coordination: It is the responsibility of the sheet metal contractor to coordinate
the work of his trade with all other trades prior to the commencement of
construction. Any conflicts must be brought to the attention of the
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Architect/Engineer. Any work requiring removal and reinstallation due to the
lack of coordination shall be the responsibility of the Contractors with no
additional cost to the Owner.
C. Offsets: The HVAC duct drawings are schematic in nature and do not indicate all
fittings. It is the responsibility of the Contractor to provide all necessary offsets,
fittings, and transformations to provide a complete project at no additional cost to
the Owner.
D. Ductwork which is dented, deformed, skewed, elongated or out-of-round,
buckled, deflected, heavily marred, corroded or otherwise damaged, will be
considered unacceptable. Such ductwork will be removed from the project site
and replaced at no additional cost or delay to the project.
E. Ductwork which has been exposed to weather or water and exhibits “white rust”,
rust, corrosion, oxidization, or other damage or deterioration shall be considered
unacceptable, and shall be removed and replaced at no additional cost to the
Owner.
3.2 INSTALLATION OF METAL DUCTWORK
A. General: Assemble and install ductwork in accordance with recognized industry
practices which will achieve air-tight and noiseless (no objectionable noise)
systems, capable of performing each indicated service. Install each run with
minimum number of joints. Align ductwork accurately at connections, within
1/8" misalignment tolerance and with internal surfaces smooth. Support ducts
rigidly with suitable ties, braces, hangers and anchors of type which will hold
ducts true-to-shape and to prevent buckling. Ductwork shall be supported
independently of others system components and other systems. Support vertical
ducts at every floor.
B. Routing: Locate ductwork runs, except as otherwise indicated, vertically and
horizontally and avoid diagonal runs wherever possible. Locate runs as indicated
by drawings, details and notations or, if not otherwise indicated, run ductwork in
shortest route which does not obstruct useable space or block access for servicing
building and its equipment. Hold ducts close to walls, overhead construction,
columns, and other structural and permanent enclosure elements of building.
Limit clearance to 1/2" where furring is shown for enclosure or concealment of
ducts, but allow for insulation thickness, if any. Where possible, locate insulated
ductwork for 1" clearance outside of insulation. Wherever possible in finished
and occupied spaces, conceal ductwork from view, by locating in mechanical
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shafts or above suspended ceilings. Do not encase horizontal runs in solid
partitions, except as specifically shown. Coordinate layout with suspended
ceiling and lighting layouts and similar finished work.
C. Branch takeoffs shall be flange-mounted 45-degree lateral wye, conical tee, or
bell-mouth, “mini” bell-mouth, or square-to-round dovetail type. Other takeoff
types shall not be used except by written permission from the Architect/Engineer.
1. Spin-in take-offs are not acceptable.
2. “Cut-and-tabbed over” connections are not acceptable.
3. “Straight-taps” are not acceptable.
4. All branch take-offs shall be sealed with appropriate gasket and/or sealant
for an air-tight connection.
D. As a minimum, seal all transverse and longitudinal joints, seams and ductwall
penetrations (except continuously welded joints, and gasketed jointing system) in
all ductwork in accordance with the Seal Class indicated in Part 1 and as defined
in the SMACNA HVAC Duct Construction Standards.
E. Clearance to Combustible Materials: Maintain a minimum ½” clearance from
metal air ducts used for heating to assemblies constructed of combustible
materials in accordance with NFPA 90A.
F. Electrical Equipment Spaces: Do not route ductwork through transformer vaults
and electrical equipment spaces and enclosures. Do not locate ductwork above
electrical equipment within clear spaces as required by the electrical code.
G. Penetrations: Where ducts pass through non-fire rated interior partitions and
exterior walls, and are exposed to view, conceal space between construction
opening and duct or duct insulation with sheet metal flanges of same gauge as
duct. Overlap opening on 4 sides by at least 1½". Fasten to duct or substrate.
H. Coordination: Coordinate duct installations with installation of accessories,
dampers, coil frames, equipment, controls and other associated work of ductwork
system.
I. Installation: Install metal ductwork in accordance with SMACNA HVAC Duct
Construction Standards. Provide all auxiliary steel for attachment of duct
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supports to the building structure.
J. Volume Dampers: Prior to the installation of the sheet metal ducts, the sheet
metal contractor shall coordinate with the balancing contractor to ensure volume
dampers are located in locations where the balancing contractor can effectively
perform his trade.
K. Temporary Closure: At ends of ducts which are not connected to equipment or air
distribution devices at time of ductwork installation, provide temporary closure of
polyethylene film or other covering which will prevent entrance of dust and debris
until time connections are to be completed.
L. Test Holes: Drill test holes in ducts as required for testing and balancing and
adjacent to control system sensors and probes in order to facilitate testing and
calibration of the sensors and probes. Plug with red plastic plugs to permit easy
locating.
3.3 EQUIPMENT CONNECTIONS
A. General: Connect metal ductwork to equipment as indicated. Provide flexible
connection for each ductwork connection to equipment mounted on vibration
isolators and/or equipment containing rotating machinery. Provide access doors
as indicated.
3.4 INSTALLATION OF DUCTWORK ACCESSORIES
A. Install ductwork accessories in accordance with manufacturer's installation
instructions, with applicable portions of details of construction as shown in
SMACNA standards, and in accordance with recognized industry practices to
ensure that products serve intended function.
B. Install turning vanes in square or rectangular 90 elbows in supply and exhaust air
systems, and elsewhere as indicated.
C. Install access doors with latches operable from either side, except outside only
where duct is too small for person to enter. Install access doors at all fire
dampers, smoke dampers, motor operated dampers, humidifiers, duct mounted
coils, smoke detectors and similar devices requiring access. Install access doors
every 20' on return and exhaust air systems. Label access doors in accordance
with Division 15 Section “MECHANICAL IDENTIFICATION.”
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D. Provide access doors at all plenums and connections to louvers and exterior vents.
Suitably size access doors to facilitate thorough inspection and cleaning of the
plenums and/or louvers and vents.
E. Access doors should be located as close as practicable to the devices being
accessed. Access doors shall be located at the underside of the duct rather than the
side of the duct if the device being accessed can be more easily and readily
accessed in this manner.
F. Generally duct access doors are not shown on the Drawings, but they shall be
provided in accordance with the above requirements, and as necessary to properly
service, clean, maintain and operate systems and equipment.
G. Install all components provided by other trades for installation in metal ducts
(temperature sensors, pressure sensors, smoke detectors, etc.) in accordance with
the component manufacturer’s requirements.
3.5 INSTALLATION OF AIR INLETS AND OUTLETS
A. General: Install air outlets and inlets in accordance with manufacturer's written
instructions and in accordance with recognized industry practices to insure that
products serve intended function.
B. Coordinate with other work, as necessary to interface installation of air outlets
and inlets with other work.
C. Locate diffusers, registers, and grilles, as indicated. Unless otherwise indicated,
locate units in center of acoustical ceiling module.
D. Where required by Drawing details, provide sheet metal elbows when connecting
ceiling diffusers with flexible ducts.
3.6 FIELD QUALITY CONTROL
A. Operate installed ductwork and accessories to demonstrate compliance with
requirements. Check for air leakage while system is operating. Repair or replace
faulty accessories, as required to obtain proper operation and quiet performance.
3.7 EXTRA STOCK
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A. Furnish extra fusible links to Owner, one link for every 10 installed of each
temperature range.
B. Furnish to Owner, three (3) operating keys for each type of air outlet and inlet that
require them.
3.8 ADJUSTING AND CLEANING
A. Clean ductwork internally, section by section as it is installed, of dust and debris.
Clean external surfaces of foreign substances which might cause corrosive
deterioration of metal or, where ductwork is to be painted, might interfere with
painting or cause paint deterioration.
B. Strip protective paper from stainless ductwork surfaces, and repair finish
wherever it has been damaged.
C. Verify all temporary closures have been removed.
D. Temporary Closure: At ends of ducts which are not connected to equipment or air
distribution devices at time of ductwork installation, provide temporary closure of
polyethylene film or other covering which will prevent entrance of dust and debris
until time connections are to be completed.
E. Adjust ductwork and accessories for proper settings, install fusible links in fire
dampers and adjust for proper action.
F. Final positioning of manual dampers is specified in Division-15 Section
“TESTING, ADJUSTING, AND BALANCING”.
G. Balancing: Provide sufficient on site manpower to assist the balancing contractor
during balancing of air systems. Provide the necessary temporary caps and install
dampers as required.
3.9 ACCEPTANCE TESTING
A. At the completion of construction and prior to occupancy, perform acceptance
tests to determine that all fire, heat and smoke protective devices function as
intended and required to restrict the spread of fire and smoke under normal
operating conditions. Identify and correct all deficiencies. Submit a written report
of acceptance test procedures and findings. Verify the following:
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1. Protective device is installed in full compliance with the requirements of
its listing and the manufacturer’s instructions.
2. For motor actuated devices, that the correct actuation occurs upon receipt
of the actuation signal and that the actuation signal is correctly provided as
described in the sequence of operation for the device.
3. Proper duct access doors and general construction access doors, if
required, have been installed, located and are of a size suitable to permit
the inspection and servicing of the device.
END OF SECTION 15891
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REVISION HISTORY
Rev Description of Change Effective Date
0 60% Progress Print August 16, 2019
1 Bid Set January 6, 2020
SECTION 23 34 00 - FANS
PART 1 - GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of Contract, including General and Supplementary Conditions and Division 00 Specification Sections, apply to this Section.
1.2 SUMMARY
A. This Section includes the following types of fans:
1. Square Inline Centrifugal (SIC)
1.3 SUBMITTALS
A. General: Submit the following in accordance with Conditions of Contract and Division 00 Specification Sections:
1. Product data for selected models, including specialties, accessories, and the following:
a. Certified fan performance curves with system operating conditions indicated.
2. Certified fan sound power ratings in all octave bands (including 63 Hz) for the following:
a. Fan inlet.b. Fan discharge.
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c. Radiated casing.
3. Motor ratings and electrical characteristics plus motor and fan accessories.
4. Materials gages and finishes, including color charts.
5. Dampers, including housings, linkages, and operators.
B. Shop drawings from manufacturer detailing equipment assemblies and indicating dimensions, weights, required clearances, components, and location and size of field connections.
C. Maintenance data for fans, for inclusion in Operating and Maintenance Manual.
1.4 QUALITY ASSURANCE
A. UL Compliance: Fans shall be designed, manufactured, and tested in accordance with UL 705 “Power Ventilators”.
B. UL Compliance: Fans and components shall be UL listed and labeled. Nationally Recognized Testing Laboratory and NEMA Compliance (NRTL): Fans and components shall be NRTL listed and labeled. The term “NRTL” shall be as defined in OSHA Regulation 1910.7.
C. NEMA Compliance: Motors and electrical accessories shall comply with NEMA standards.
D. Electrical Component Standard: Components and installation shall comply with NFPA 70, “National Electrical Code”, and the requirements of Division 23 05 30, “ELECTRICAL REQUIREMENTS FOR MECHANICAL EQUIPMENT”.
E. Sound Power Level Ratings: Comply with AMCA Standard 301 “Method for Calculating Fan Sound Ratings From Laboratory Test Data”. Test fans in accordance with AMCA Standard 300 “Test Code for Sound Rating”. Fans shall be licensed to bear the AMCA Certified Sound Ratings Seal.
F. Fan Performance Ratings: Establish flow rate, pressure, power, air density, speed of rotation, and efficiency by factory tests and ratings in accordance with AMCA Standard 210/ASHRAE Standard 51 - Laboratory Methods of Testing Fans for Rating.
1.5 DELIVERY, STORAGE, AND HANDLING
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A. Lift and support units with the manufacturer's designated lifting or supporting points.
B. Disassemble and reassemble units as required for movement into the final location following manufacturer's written instructions.
C. Deliver fan units as a factory assembled unit to the extent allowable by shipping limitations, with protective crating and covering.
1.6 SEQUENCING AND SCHEDULING
A. Coordinate the size and location of concrete equipment pads. Cast anchor bolts into pad.
B. Coordinate the installation of roof curbs, equipment supports, and roof penetrations specified in Division 07.
C. Coordinate the size and location of structural steel support members.
1.7 EXTRA MATERIALS
A. Furnish one additional complete set of belts for each belt driven fan.
PART 2 PRODUCTS
2.1 GENERAL
A. General: Provide fans that are factory fabricated and assembled, factory tested, and factory finished, with indicated capacities and characteristics.
B. Fans and Shafts: Statically and dynamically balanced and designed for continuous operation at the maximum rated fan speed and motor horsepower.
C. Fan Shaft: Turned, ground, and polished steel designed to operate at no more than 70% of the first critical speed at the top of the speed range of the fan's class.
D. Belt Drives: Factory mounted, with final alignment and belt adjustment made after installation.
E. Service Factor: 1.4.
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F. Belts: Oil-resistant, non-sparking, and non-static.
G. Motors and Fan Wheel Pulleys: Adjustable pitch for use with motors through 15 HP; fixed pitch for use with motors larger than 15 HP. Select pulley so that pitch adjustment is at the middle of the adjustment range at fan design conditions.
H. Belt Guards: Provide steel belt guards for motors mounted on the outside of the fan cabinet.
2.2 SQUARE INLINE CENTRIFUGAL (SIC)
A. General Description: Belt or direct drive (as scheduled on the Drawings) centrifugal fan for inline air flow. Fan housing shall be square with removable or hinged panels far access.
B. Materials: Fan housing shall be minimum 18 gauge galvanized steel or factory applied primer with enamel paint on cold rolled steel. Fan wheels shall be aluminum.
C. Motor: Provide VFD rated motor.
D. Fan Wheel: Backward inclined (BI).
E. Bearings; Permanently lubricated, pillow block type, minimum (L50) life of 200,000 hours.
F. Finish: As stated in Materials.
G. Accessories:
1. Disconnect switch with wiring to motor, accessible from the exterior of the fan.
H. Manufacturers:
1. Carnes model VI.2. Cook SQ or SQN series.3. Greenheck Model SQ or BSQ.4. Penn Centrex Inliner SX.
PART 3 EXECUTION
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3.1 EXAMINATION
A. Examine areas and conditions, with Installer present, for compliance with requirements for installation tolerances, housekeeping pads, and other conditions affecting performance of fans.
B. Do not proceed until unsatisfactory conditions have been corrected.
3.2 INSTALLATION, GENERAL
A. Install fans level and plumb, in accordance with manufacturer's written instructions. Support units as described below, using the vibration control devices indicated. Vibration control devices are specified in Division 23 Section “VIBRATION CONTROLS”.
B. Support floor mounted units on concrete equipment bases using neoprene pads. Secure units to anchor bolts installed in concrete equipment base.
C. Support floor mounted units on concrete equipment bases using housed spring isolators. Secure units to anchor bolts installed in concrete equipment base.
D. Secure roof mounted fans to roof curbs with cadmium plated hardware.
1. Installation of roof curbs is specified in Division 07.
E. Suspended Units: Suspend units from structural steel support frame using threaded steel rods and vibration isolation springs.
F. Arrange installation of units to provide access space around fans for service and maintenance.
3.3 EQUIPMENT BASES
A. Coordinate size of equipment bases with actual unit sizes provided. Construct base 4" larger in both directions than the overall dimensions of the supported unit.
3.4 CONNECTIONS
A. Duct installations and connections are specified in other Division 23 sections. Make final duct connections with flexible connections.
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B. Electrical Connections: The following requirements apply:
1. Electrical power wiring is specified in Division 26.
2. Temperature control wiring and interlock wiring are specified in Division 23 Section “FACILITY MANAGEMENT SYSTEM”.
C. Grounding: Connect unit components to ground in accordance with the National Electrical Code.
3.5 ADJUSTING, CLEANING, AND PROTECTING
A. Clean unit cabinet interiors to remove foreign material and construction dirt and dust. Vacuum clean fan wheel and cabinet.
3.6 COMMISSIONING
A. Final Checks Before Start-Up: Perform the following operations and checks before start-up:
1. Remove shipping blocking and bracing.
2. Verify unit is secure on mountings and supporting devices and that connections for piping, ductwork, and electrical are complete. Verify proper thermal overload protection is installed in motors, starters, and disconnects.
3. Perform cleaning and adjusting specified in this Section.
4. Disconnect fan drive from motor, verify proper motor rotation direction, and verify fan wheel free rotation and smooth bearings operations. Reconnect fan drive system, align belts, and install belt guards.
5. Lubricate bearings, pulleys, belts, and other moving parts with factory recommend lubricants.
6. Verify manual and automatic volume control and that fire and smoke dampers in connected ductwork systems are in the full open position.
7. Disable automatic temperature control operators.
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B. Starting procedures for fans:
1. Energize motor; verify proper operation of motor, drive system, and fan wheel. Adjust fan to indicated RPM.
2. Replace fan and motor pulleys as required to achieve design conditions.
3. Measure and record motor electrical values for voltage and amperage.
4. Shut unit down and reconnect automatic temperature control operators.
C. Refer to Division 23 Section “TESTING, ADJUSTING, AND BALANCING” for procedures for air handling system testing, adjusting, and balancing.
END OF SECTION 23 34 00
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REVISION HISTORY
Rev Description of ChangeEffective Date
0 60% Progress Print August 16, 2019
1 Bid Set January 6, 2020
SECTION 23 72 00 - ENERGY RECOVERY UNITS
PART 1 – GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of Contract, including General and
Supplementary Conditions and Division-1 Specification sections, apply to work
of this section.
B. Division-23 Basic Mechanical Materials and Methods sections apply to work of
this section.
1.2 DESCRIPTION OF WORK
A. Extent of energy recovery units work required by this section is indicated on
drawings and schedules, and by requirements of this section.
B. Types of energy recovery units specified in this section include the following:
1. Enthalpy (Total Energy) Wheels
2. Packaged energy recovery units.
C. Refer to other Division-23 sections for concrete pads, piping, specialties, pumps,
ductwork, etc. required external to energy recovery units for installation; not work
of this section.
1.3 QUALITY ASSURANCE
A. Manufacturer's Qualifications: Firms regularly engaged in manufacture of energy
recovery units, of types and capacities required, whose products have been in
satisfactory use in similar service for not less than 5 years.
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B. Codes and Standards:
1. ASHRAE Compliance: Provide capacity ratings for energy recovery
devices in accordance with ASHRAE 84 “Methods of Testing Air-to-Air
Heat Exchangers”.
2. NRCA Compliance: Provide roof curbs for roof mounted equipment
constructed in accordance with recommendations of NRCA.
3. ARI Compliance: Test and rate energy recovery units in accordance with
ARI 1060 “Standard for Air-to-Air Heat Recovery Equipment”.
4. NFPA Compliance: Construct and install energy recovery units
incorporating electrical equipment in accordance with NFPA 70 “National
Electrical Code”.
5. UL Labels: Provide energy recovery units ancillary electrical components
which have been listed and labeled by UL.
1.4 SUBMITTALS
A. Product Data: Submit manufacturer's technical product data, including rated
capacities of selected model clearly indicated, weights (shipping, installed, and
operating), furnished specialties and accessories; installation and start-up
instructions and the following:
1. Certified fan performance curves with system operating conditions
indicated.
2. Certified fan sound power ratings.
3. Certified coil performance ratings with system operating conditions
indicated.
4. Motor ratings and electrical characteristics plus motor and fan accessories.
5. Materials gauges and finishes of base, panels, and roof.
6. Filters with performance characteristics.
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7. Manufacturer’s data for dampers, including housings, linkages, and
operators.
8. Certified damper leakage ratings.
9. Insulation performance data, density, thickness, and thermal
characteristics.
B. Performance Data. Provide performance data at 30F, 5F, and –15F in
addition to the conditions indicated on the schedule. Indicate the frost threshold
temperature for 30%, 20%, and 10% exhaust air relative humidity.
C. Shop Drawings: Submit manufacturer's assembly-type shop drawings indicating
dimensions, weight loadings, required clearances, and methods of assembly of
components.
D. Wiring Diagrams: Submit manufacturer's electrical requirements for power
supply wiring to units. Submit manufacturer's ladder-type wiring diagrams for
interlock and control wiring. Clearly differentiate between portions of wiring that
are factory-installed and portions to be field-installed.
E. Maintenance Data: Submit maintenance data and parts list for each energy
recovery unit, control, and accessory; including “trouble-shooting” maintenance
guide. Include this data, product data, shop drawings, and wiring diagrams in
maintenance manual; in accordance with requirements of Division 1.
1.5 PRODUCT DELIVERY, STORAGE, AND HANDLING
A. Handle energy recovery units and components carefully to prevent damage,
breaking, denting and scoring. Do not install damaged units or components;
replace with new.
B. Store energy recovery units and components in clean dry place. Protect from
weather, dirt, fumes, water, construction debris, and physical damage.
C. Comply with Manufacturer's rigging and installation instructions for unloading
energy recovery units and moving them to final location.
PART 2 – PRODUCTS
2.1 MANUFACTURERS
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A. The design has been based on the manufacturer listed in the schedule. The
scheduled and other listed manufacturers are acceptable only to the extent that
they meet all of the provisions of this specification. Variations in dimensions,
electrical, and connection sizes between the products of the scheduled, and other
manufacturers listed in the specifications, must be fully coordinated by the
contractor with all trades and at no additional cost to the owner.
2.2 ENTHALPY (TOTAL ENERGY) WHEEL
A. General: Provide as indicated, factory-assembled and tested enthalpy wheels, of
capacity and for electrical characteristics as scheduled.
B. Casing: Construct of heavy-gage steel with side panels removable for access to
internal components. Finish with manufacturer's standard paint coating. Provide
casing seals on periphery of rotor, on duct divider, and on purge section (if
included).
C. Rotor: Construct of corrugated aluminum [synthetic fiber- based media]
strengthened with radial spokes for rigidity. Provide solid adsorbent desiccant
coating fully bonded to substrate. Etched or oxidized surfaces are not acceptable.
Construct media for passing solids up to 800 microns. Drive rotor by means of
belt around outside of rotor. The desiccant shall be one of the following:
1. Desiccant shall be a non-migrating, water selective, 4 angstrom maximum,
molecular sieve material.
2. Desiccant shall be a non-migrating silica gel material.
3. Rotor shall be cleanable by flushing with hot water, low pressure steam,
compressed air, or light detergent without performance degradation.
D. Seal: Provide manufacturer’s standard seal that can limit leakage.
E. Drive: Provide variable-speed, fractional HP motor, and gear reducer, with speed
controlled from silicon controlled rectifier (SCR).
F. Controls: VFD controls by controls contractor.
a. Accept an on-off command
b. Accept a winter-summer command
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2. Frost Protection: Provide necessary internal controls and VFD to vary
wheel speed to prevent frost formation on wheel.
3. Economizer Changeover Control: Provide internal controls necessary to
operate in both summer and winter recovery modes with automatic
change-over capability. Wheel shall only operate when beneficial energy
recovery is available.
4. Rotation Detection: Provide electronic control module, electro-magnetic
sensor, and iron shuttle factory-wired and mounted, with alarm bell for
field wiring and mounting.
G. Accessories: Provide the following accessories:
1. Duct flanges.
2. Weatherproofing.
H. Manufacturer: Subject to compliance with requirements, provide enthalpy wheels
of one of the following:
1. Thermotech
2. SG America
I. Excluded Manufacturers: Trane OEM wheels as sold by Air Exchange and wheels
from SEMCO.
2.3 PACKAGED ENERGY RECOVERY UNITS
A. General: Provide as indicated, factory-assembled and tested energy recovery
units, of capacity and for electrical characteristics as scheduled. Package shall
include heat recovery devices as described in other paragraphs of this
specification. The heat recovery device shall be supplemented with other
components as required to provide a complete system.
B. Housing: Packaged energy recovery units shall be entirely of double wall
galvanized steel or aluminum construction. Construct exterior panels of
minimum 18 gauge galvanized steel panels with 1" thick, 3-lb density fiberglass
and 22 gage internal liner. Unit floor shall be minimum 16 gauge galvanized steel.
Galvanizing shall be hot dipped conforming to ASTM A525 and shall provide a
minimum of .90 oz. of zinc per square foot (G90). The exterior panels shall be
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fastened to a structural steel or formed galvanized steel internal frame, gasketed
and caulked weather tight. Unit shall have a full length and width drain pan with
drain connections. Unit exterior shall be finish painted. Provide 4 lifting lugs.
C. On all units, provide the following:
1. Provide pitched top to shed water and overhang sides by 4" minimum.
Provide waterproof floor with upturned seams and collars at all
penetrations. Finish housing with manufacturer's standard paint finish.
2. Roof Curbs: manufacturer's standard construction, insulated and having
corrosive protective coating, complete with factory-installed wood nailer
and drain nipple. Construction shall be in accordance with NRCA
Standards.
3. Duct connections: Provide all duct connections at top of unit.
4. Dampers: Provide motorized dampers for outside air and exhaust air.
Actuator mounted powered and wired by others.
5. Flow elements: Provide flow element to measure exhaust air and outside
air.
6. Filter differential pressure indicators: Provide differential pressure
indicators for outside air and return air filters.
D. Provide access to internal components by access doors, double wall insulated, one
side hinged and minimum of 2 cam latches operable from either side.
E. Fans: Provide supply and return fans of scheduled capacity and design, isolated
from unit housing with spring isolation base and flexible duct connections.
Provide adjustable belt drive, TEFC motors on adjustable motor bases.
1. Fan Testing Requirements: The following factory tests are required:
a. General: Sound power level ratings shall comply with AMCA
Standard 301 “Method for Calculating Fan Sound Ratings From
Laboratory Test Data,” and shall be the result of tests made in
accordance with AMCA Standard 300 “Test Code for Sound
Rating.’ Fans shall be licensed to bear the AMCA Certified Sound
Ratings Seal.
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b. Unit’s fans performance ratings for flow rate, pressure, power, air
density, speed of rotation, and efficiency shall be factory tested and
ratings established in accordance with AMCA Standard
210/ASHRAE Standard 51 – Laboratory Methods of Testing Fans
for Rating.
2. Fan Section Construction: Fan section shall be equipped with a formed
steel channel base for integral mounting of fan, motor, and casing panels.
Fan and motor shall be mounted on an independent frame with the frame
mounted on 2” deflection spring vibration isolators to isolate fan and
motor vibration from the unit frame.
3. Fan and Shafts: Statically and dynamically balanced and designed for
continuous operation at the maximum rated fan speed and motor
horsepower. Fan shaft shall be solid steel, turned, ground, and polished.
Fan wheels shall be keyed to the shaft.
4. Shaft Bearings: Grease-lubricated ball bearings selected for L(50)
200,000-hour average life.
5. Fan Drives: Designed for a 1.3 service factor and factory mounted with
final alignment and belt adjustment made after installation.
6. Belt Drive: Motors and fan wheel pulleys shall be fixed pitch.
F. Motors
1. Refer to Specification Section 23, “ELECTRICAL REQUIREMENTS
FOR MECHANICAL EQUIPMENT” for motor requirements in air
handling units.
G. Filters: Provide 2" thick 30% efficiency MERV 8 disposable filters in galvanized
steel frame, on upstream side of energy recovery wheel in exhaust air streams.
Provide 6” thick 45% efficiency MERV 8 disposable filters in galvanized steel
frame on upstream side of energy recovery wheel in outside air stream.
H. Piping and Wiring: Provide chase within housing for piping and electrical
conduits. Factory-pipe coils and factory-wire motors and internal controls, so
only external connections are required. Unit shall include all panels and wiring
necessary for a single point electrical connection.
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I. Control Dampers
1. General Requirements
a. Permanently stamp or scribe position indication on the end of
driven shafts when position is not obvious.
b. All automatic dampers shall be sized for the application by the
BMS Contractor or as specifically indicated on the Drawings.
c. Use only factory fabricated dampers with replaceable resilient
blade seals, stainless steel jamb seals and with entire assembly
suitable for the maximum temperature and air velocities
encountered in the system.
d. Dampers used for mixing of airstreams to be parallel blade type,
sized for air velocity of 1800 to 2000 fpm.
e. Dampers used for throttling or modulating applications other than
air stream mixing to be opposed blade type.
f. Two position dampers may be parallel or opposed blade type.
g. Maximum damper width is 48 inches; where required width
exceeds 48 inches, use multiple dampers. Minimum size for duct
mounted dampers is 90% of duct size.
h. Provide insulated type automatic control dampers at all outside and
exhaust air duct locations.
2. General Use Control Dampers
a. Frames and blades shall be constructed of either galvanized steel or
aluminum.
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b. Damper blades shall be 16-gauge minimum and shall not exceed
six (6) inches in width.
c. Damper frames shall be 16-gauge minimum hat channel type with
corner bracing. Additional stiffening or bracing shall be provided
for any section exceeding 48” in height.
d. All damper bearings shall be made of stainless steel or oil
impregnated bronze.
e. Multiple section dampers may be jack shafted to allow mounting
of actuators. Each end of the jack shaft shall receive at least one
actuator to reduce jack shaft twist.
f. Dampers shall be tight closing, low leakage type with synthetic
elastomer seals on the blade edges and flexible stainless steel side
seals.
g. Dampers of 48”x48” size shall not leak in excess of 8.5 cfm per
square foot when closed against 4” w.g. static pressure when tested
in accordance with AMCA Std. 500.
h. One piece rolled blade dampers with exposed or concealed linkage
may be used with face velocities of 1500 FPM or below.
i. Manufacturers and Model
1) Johnson D-1100
2) Ruskin CD36
3) Vent Products 5800
J. Controls: Provide internal controls as required for operation of the heat recovery
module, as described in the sequence of operations and control schematics on the
Drawings. Interface internal controls with building automatic temperature
controls as indicated and as required.
K. Manufacturer:
1. Ventrol
2. Annexair
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3. Applied Air Systems Inc.
4. Des Champs Inc.
5. Efficient Air Systems
6. Innovent
7. QDT, Ltd.
8. Venmar
9. Xetex
L. Air Flow Measuring Devices
1. Fan Inlet Air Flow Measuring Stations
a. Each traverse probe shall be of a dual manifolded, cylindrical, type
3003 extruded aluminum configuration having an anodized finish
to eliminate surface pitting and unnecessary air friction (unless
other materials are specifically indicated on the drawings).
b. The air flow traverse probe shall not induce a measurable pressure
drop, nor shall the sound level within the duct be amplified by its
singular or multiple presence in the airstream. Each airflow
measuring probe shall contain multiple total and static pressure
sensors placed at equal distances along the probe length. The
number of sensors on each probe and the quantity of probes
utilized at each installation shall comply with the ASHRAE
Standards for duct traversing.
c. Double inlet fans shall be provided with a flow sensing probe at
each inlet. Sensor transmitter shall include a device to sum the two
flow rates and indicate the full flow through the fan.
d. Acceptable Manufacturers
1.) Ebtron Gold Series
2.) Duct Air Flow Measuring Stations
e. Same as above except suitable for duct mounting.
PART 3 – EXECUTION
3.1 INSPECTION
A. Examine areas and conditions under which energy recovery units are to be
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installed. Do not proceed with work until unsatisfactory conditions have been
corrected.
3.2 INSTALLATION
A. Install energy recovery units where indicated, in accordance with equipment
manufacturer's written instructions, and with recognized industry practices to
ensure that units comply with requirements and serve intended purposes.
B. Electrical Wiring: Install electrical devices furnished by manufacturer but not
specified to be factory-mounted. Furnish copy of manufacturer's wiring diagram
submittal to Electrical Installer.
C. Verify that electrical wiring installation is in accordance with manufacturer's
submittal and installation requirements of Division-26 sections. Do not proceed
with equipment start-up until wiring installation is acceptable to equipment
installer.
3.3 INSTALLATION OF HEAT WHEELS
A. General: Comply with heat wheel manufacturer's instructions for installation,
except as otherwise indicated.
B. Install so supply and exhaust flow in opposite directions, and rotation is from
exhaust side to purge section to supply side.
C. Provide clearance space for wheel removal.
D. Provide access doors in both supply and exhaust ducts both upstream and
downstream for access to wheel surfaces, drive motor, and seals.
E. Provide removable panel or access door between supply and exhaust ducts on
building side for by-pass during start-up.
F. Install floor mounted units on 4" high concrete pad.
G. Start-up heat wheels in accordance with manufacturer's start-up instructions and
in presence of manufacturer's representative.
3.4 CONNECTIONS
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A. Piping installation requirements are specified in other Division 23 sections. The
Drawings indicate the general arrangement of piping, valves, fittings, and
specialties. The following are specific connection requirements:
1. Arrange piping installations adjacent to units to allow unit servicing and
maintenance.
B. Duct installations and connections are specified in other Division 23 sections.
Make final duct connections with flexible connections.
C. Electrical Connections: The following requirements apply:
1. Electrical power wiring is specified in Division 26.
2. Temperature control wiring and interlock wiring is specified in Division
23 Section, “FACILITY MANAGEMENT SYSTEM.”
D. Grounding: Connect unit components to ground in accordance with the National
Electrical Code.
3.5 FIELD QUALITY CONTROL
A. Manufacturer’s Field Inspection: Arrange and pay for a factory-authorized
service representative to perform the following:
1. Inspect the field assembly of components and installation of energy
recovery units including piping, ductwork, and electrical connections.
2. Prepare a written report on findings and recommended corrective actions.
3.6 ADJUSTING, CLEANING, AND PROTECTING
A. Adjust damper linkages for proper damper operation.
B. Clean unit cabinet interiors to remove foreign material and construction dirt and
dust. Vacuum clean fan wheel, fan cabinet, and coils entering air face. Comb all
coil fins so they are straight and parallel.
3.7 COMMISSIONING
A. Final Checks Before Start-Up: Perform the following operations and checks
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before start-up:
1. Remove shipping, blocking, and bracing.
2. Verify unit is secure on mountings and supporting devices and
connections for piping, ductwork, and electrical are complete. Verify
proper thermal overload protection is installed in motors, starters, and
disconnects.
3. Perform cleaning and adjusting specified in this Section.
4. Disconnect fan drive from motor and verify proper motor rotation
direction and verify fan wheel free rotation and smooth bearings
operations. Reconnect fan drive system, align belts, and install belt guards.
5. Lubricate bearings, pulleys, belts, and other moving parts with factory-
recommended lubricants.
6. Install clean filters.
7. Verify manual and automatic volume control, and fire and smoke dampers
in connected ductwork systems are in the full-open position.
8. Disable automatic temperature control operators.
B. Start-up packaged heat recovery units in presence of manufacturer’s
representative and in accordance with manufacturer’s startup instructions and the
following:
1. Energize motor, verify proper operation of motor, drive system, and fan
wheel. Adjust fan to indicated RPM.
2. Replace fan and motor pulleys as required to achieve design conditions.
3. Measure and record motor electrical values for voltage and amperage.
4. Shut unit down and reconnect automatic temperature control operators.
C. Refer to Division 23 Section, “TESTING, ADJUSTING, AND BALANCING”
for procedures for air handling unit testing, adjusting, and balancing.
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3.8 DEMONSTRATION
A. Demonstration Services: Arrange and pay for a factory-authorized service
representative to train Owner’s maintenance personnel on the following:
1. Procedures and schedules related to start-up and shutdown,
troubleshooting, servicing, preventative maintenance, and how to obtain
replacement parts.
2. Familiarization with contents of Operating and Maintenance Manuals
specified in Division 23 Section, “BASIC MECHANICAL
REQUIREMENTS.”
3. Schedule training with at least seven days’ advance notice.
3.9 START-UP
A. Start-up packaged heat recovery units in accordance with manufacturer's start-up
instructions and in presence of manufacturer's representative.
3.10 TESTING
A. Upon completion of installation of energy recovery units, and after air-side and
water-side balancing has been completed, test units to ascertain percent
effectiveness of heat transfer device. Adjust units for maximum effectiveness.
B. Furnish test report, similar to SMACNA Form ER-1-78, include report in each
copy of maintenance manual.
3.11 EXTRA STOCK
A. Provide one complete extra set of filters for each filter bank in energy recovery
units. Install new filters at completion of energy recovery system work, and prior
to testing, adjusting, and balancing work. Obtain receipt from Owner that new
filters have been installed.
B. Provide one spare set of belts for each belt-driven fan in energy recovery units,
obtain receipt from Owner that belts have been received.