-
1 Important Safety Instructions
.............................................. 12 Shipping
Inspection
............................................................ 3
2.1 Parts
............................................................................
32.2 Handling
......................................................................
3
3 Codes & Regulations
.......................................................... 34
Replacement Parts
............................................................. 35
Pre-Installation Considerations
.......................................... 3
5.1 Preparation
.................................................................
35.2 System Matches
......................................................... 35.3
Interconnecting Tubing
................................................ 35.4 Clearances
..................................................................
45.5 Horizontal Applications
................................................ 4
6 Installation Location
........................................................... 46.1
Upflow Installation
....................................................... 46.2
Horizontal Left Installation
........................................... 46.3
Downflow/Horizontal Right Installation ........................
4
7 Refrigerant Lines
................................................................
67.1 Tubing Size
.................................................................
67.2 Tubing Preparation
...................................................... 67.3 Tubing
Connections for TXV Models .......................... 7
8 Condensate Drain Lines
................................................... 7 9 Ductwork
...........................................................................
8
9.1 Return Ductwork
......................................................... 810
Return Air Filters
............................................................... 811
Electric Heat
.....................................................................
8
11.1 No Electric Heat Installed
.......................................... 912 Electrical and
Control Wiring ............................................ 9
12.1 Building Electrical Service Inspection
....................... 912.2 Wire Sizing
................................................................
912.3 Maximum Overcurrent Protection (MOP)................ 1012.4
Electrical Connections Supply Voltage ................ 1012.4.1 Air
Handler Only (Non-Heat Kit Models) .............. 1012.4.2 Air
Handler - Non-Circuit Breaker Heat Kits ......... 1012.4.3 Air
Handler With Circuit Breaker Heat Kit ............ 1012.5 Low
Voltage Connections .......................................
1012.5.1 Thermostats
......................................................... 10
13 Achieving 2% Low Leakage Rate
................................... 1014 Start-Up Procedure
......................................................... 1115
Regular Maintenance
..................................................... 11Circulator
Blower
....................................................................
13Troubleshooting
.....................................................................
17ComfortNet System
............................................................
18Start-Up Procedure
................................................................
19Regular Maintenance
.............................................................
20Troubleshooting
.....................................................................
23Diagnostic Codes
...................................................................
27Wiring Diagrams
....................................................................
28
RECOGNIZE THIS SYMBOLAS A SAFETY PRECAUTION.
ATTENTION INSTALLING PERSONNELPrior to installation, thoroughly
familiarize yourself with this Installation Manual. Observe all
safety warnings. During installation orrepair, caution is to be
observed. It is your responsibility to install the product safely
and to educate the customer on its safe use.
AVPTC**14** 2013 Goodman Manufacturing Company, L.P.5151 San
Felipe, Suite 500, Houston, TX 77056www.goodmanmfg.com - or -
www.amana-hac.comP/N: IO-443A Date: November 2013
1 Important Safety InstructionsThe following symbols and labels
are used throughout thismanual to indicate immediate or potential
safety hazards. Itis the owners and installers responsibility to
read and com-ply with all safety information and instructions
accompanyingthese symbols. Failure to heed safety information
increasesthe risk of personal injury, property damage, and/or
productdamage.
AIR HANDLERSINSTALLATION & OPERATING INSTRUCTIONS
is a registered trademark of Maytag Corporation or its related
entities and is used under license. All rights reserved.
-
2To prevent the risk of property damage, personal injury, or
death, do not store combustible materials or use gasoline or other
flammable liquids or vapors in the vicinity of this unit.
CARBON MONOXIDE POISONING HAZARD
-
Special Warning for Installation of Furnace or Air Handling
Units inEnclosed Areas such as Garages, Utility Rooms or Parking
Areas
Carbon monoxide producing devices (such as an automobile,
spaceheater, gas water heater, etc.) should not be operated in
enclosed areassuch as unventilated garages, utility rooms or
parking areas because ofthe danger of carbon monoxide (CO)
poisoning resulting from the exhaustemissions. If a furnace or air
handler is installed in an enclosed area suchas a garage, utility
room or parking area and a carbon monoxide producingdevice is
operated therein, there must be adequate, direct
outsideventilation.
This ventilation is necessary to avoid the danger of CO
poisoning whichcan occur if a carbon monoxide producing device
continues to operate inthe enclosed area. Carbon monoxide emissions
can be (re)circulatedthroughout the structure if the furnace or air
handler is operating in anymode.
CO can cause serious illness including permanent brain damage or
death.
B10259-216
2 Shipping InspectionAlways transport the unit upright; laying
the unit on its side ortop during transit may cause equipment
damage. The installershould inspect the product upon receipt for
shipping damageand subsequent investigation is the responsibility
of the car-rier. The installer must verify the model number,
specifica-tions, electrical characteristics, and accessories are
correctprior to installation. The distributor or manufacturer will
notaccept claims from dealers for transportation damage or
in-stallation of incorrectly shipped units.
2.1 Parts
Also inspect the unit to verify all required components
arepresent and intact. Report any missing components im-mediately
to Goodman or to the distributor. Use onlyfactory authorized
replacement parts (see Section 5).Make sure to include the full
product model number andserial number when reporting and/or
obtaining serviceparts.
HIGH VOLTAGE!
Failure to do so may cause property damage,personal injury or
death.
Disconnect ALL power before servicing.Multiple power sources may
be present.
Installation and repair of this unit should be performedby
individuals meeting the requirements of an
entry level technician as specified by the Air-Conditioning,
Heating and Refrigeration Institute(AHRI). Attempting to install or
repair this unit withoutsuch background may result in product
damage, personal injury or death.
ONLY , at a minimum,
This product is factory-shipped for use with 208/240/1/60
electrical power supply. reconfigure this air handler to operate
with any other power supply.
DO NOT
To avoid property damage, personal injury or death due to
electrical shock, this unit MUST have an
electrical ground. The electrical ground circuit may consist of
an appropriately sized electrical wire connecting the ground lug in
the unit control box to the building electrical service panel.Other
methods of grounding are permitted if performed in accordance with
the National Electric Code (NEC)/American National Standards
Institute (ANSI)/National Fire Protection Association (NFPA) 70 and
local/state codes. In Canada, electrical grounding is to be in
accordance with the Canadian Electric Code (CSA) C22.1.
uninterrupted, unbroken
When installing or servicing this equipment, safety clothing,
including hand and eye protection, is strongly recommended. If
installing in an area that has special safety requirements (hard
hats, etc.), bserve these requirements.
o
Do not connect to or use any device that is not design-certified
by Goodman for use with this unit. Serious property damage,
personal injury, reduced unit performance and/or hazardous
conditions may result from the use of such non-approved
devices.
-
32.2 Handling
Use caution when transporting/carrying the unit. Do notmove unit
using shipping straps. Do not carry unit withhooks or sharp
objects. The preferred method of carryingthe unit after arrival at
the job site is to carry via a two-wheel hand truck from the back
or sides or via hand bycarrying at the cabinet corners.
3 Codes & RegulationsThis product is designed and
manufactured to comply withapplicable national codes. Installation
in accordance with suchcodes and/or prevailing local
codes/regulations is the respon-sibility of the installer. The
manufacturer assumes no respon-sibility for equipment installed in
violation of any codes or regu-lations.The United States
Environmental Protection Agency (EPA)has issued various regulations
regarding the introduc-tion and disposal of refrigerants. Failure
to follow theseregulations may harm the environment and can lead
tothe imposition of substantial fines. Should you have anyquestions
please contact the local office of the EPA and/orrefer to EPAs
website www.epa.gov.
4 Replacement PartsWhen reporting shortages or damages, or
ordering repair parts,give the complete product model and serial
numbers asstamped on the product. Replacement parts for this
productare available through your contractor or local distributor.
Forthe location of your nearest distributor consult the white
busi-ness pages, the yellow page section of the local telephonebook
or contact:
CONSUMER AFFAIRSGOODMAN MANUFACTURING COMPANY, L.P.
7401 SECURITY WAYHOUSTON, TEXAS 77040
(877) 254-4729
5 Pre-Installation Considerations5.1 Preparation
Keep this document with the unit. Carefully read all
in-structions for the installation prior to installing product.Make
sure each step or procedure is understood and anyspecial
considerations are taken into account before start-ing
installation. Assemble all tools, hardware and suppliesneeded to
complete the installation. Some items may needto be purchased
locally. Make sure everything needed toinstall the product is on
hand before starting.
5.2 System Matches
The entire system (combination of indoor and outdoorsections)
must be manufacturer approved and Air-Condi-tioning, Heating, and
Refrigeration Institute (AHRI) listed.
NOTE: Installation of unmatched systems is not permit-ted and
will void the product warranty.
5.3 Interconnecting Tubing
Give special consideration to minimize the length of
re-frigerant tubing when installing air handlers. Refer to Re-mote
Cooling/Heat Pump Service Manual RS6200006,and TP-107 Long Line Set
Application R-410A for tubingguidelines. If possible, allow
adequate length of tubingsuch that the coil may be removed (for
inspection or clean-ing services) from the cabinet without
disconnecting thetubing.
5.4 Clearances
The unit clearance from a combustible surface may be0". However,
service clearance must take precedence.A minimum of 24" in front of
the unit for service clear-ance is required. Additional clearance
on one side or topwill be required for electrical wiring
connections. Consultall appropriate regulatory codes prior to
determining finalclearances. When installing this unit in an area
that maybecome wet (such as crawl spaces), elevate the unit witha
sturdy, non-porous material. In installations that maylead to
physical damage (i.e. a garage) it is advised toinstall a
protective barrier to prevent such damage. Al-ways install units
such that a positive slope in conden-sate line (1/4" per foot) is
allowed.
5.5 Horizontal Applications
If installed above a finished living space, a secondarydrain pan
(as required by many building codes), must beinstalled under the
entire unit and its condensate drainline must be routed to a
location such that the user willsee the condensate discharge.
6 Installation LocationNOTE: These air handlers are designed for
indoor installa-tion only.The AVPTC**14** product line may be
installed in one of theupflow, downflow, horizontal left or
horizontal right orienta-tions as shown in Figures 2, 3, 4 and 5.
The unit may beinstalled in upflow or horizontal left orientation
as shipped (referto specific sections for more information).Minor
field modifications are necessary to convert to downflowor
horizontal right as indicated in below sections.6.1 Upflow
Installation
No field modifications are mandatory however to obtainmaximum
efficiency, the horizontal drip shield must beremoved.
Drip Shield Removal: Refer to Figure 1, remove the two(2) screws
that secure the drip shield support brackets tothe condensate
collectors (one screw per side). Removethe two (2) screws that
secure the drip shield to the drain
-
4DFK-BDownflow Kit
DFK-CDownflow Kit
DFK-DDownflow Kit
AVPTC24B14** AVPTC30C14** AVPTC42D14**
AVPTC36C14** AVPTC48D14**
AVPTC60D14**
MODEL LIST FOR DOWNFLOW KITS
DOWNFLOW KITTable 1
Refer to Figure 6 and 7 for the location of the compo-nents
referenced in the following steps.
1. Before inverting the air handler, remove blower accesspanel
and coil access panel. The coil access panel andtubing panel may
remain screwed together during thisprocedure. Remove and retain the
seven (7) screws se-curing the coil access panel to the cabinet and
the six(6) screws securing the blower access panel to the
cabi-net.
2. Slide the coil assembly out using the drain pan to pullthe
assembly from the cabinet.
NOTE: DO NOT USE MANIFOLDS OR FLOWRATORTO PULL THE COIL ASSEMBLY
OUT. FAILURE TODO SO MAY RESULT IN BRAZE JOINT DAMAGEAND LEAKS.
3. Removal of the center support is required on units with21"
wide cabinet. Remove and retain the two (2) screwsthat secure the
center support to the cabinet. Removethe center support.
4. Using the drain pan to hold the coil assembly, slide thecoil
assembly back into the cabinet on the downflowbrackets as shown in
Figure 8.
5. Re-install the center support (if removed) using the two(2)
screws removed in Step 4.
6. Re-install the access panels removed in Step 1 as shownin
Figure 9.
7. The bottom left drain connection is the primary drain forthis
application and condensate drain line must be at-tached to this
drain connection. The top connection ofthe three drain connections
on the drain pan must re-main plugged for this application. The
bottom left drainconnection is for the secondary drain line (if
used).
pan. The drip shield and drip shield brackets may now
beremoved.
The bottom left drain connection is the primary drain forthis
application and condensate drain line must be at-tached to this
drain connection. The top connection of thethree drain connections
on the drain pan must remainplugged for this application. The
bottom right drain con-nection is for the secondary drain line (if
used).
Screw
Screw
DRIP SHIELD REMOVALFigure 1
6.2 Horizontal Left Installation
No field modifications are permissible for this application.
The bottom right drain connection is the primary drain forthis
application and condensate drain line must be at-tached to this
drain connection. The top connection of thethree drain connections
on the drain pan must remainplugged for this application. The
bottom left drain con-nection is for the secondary drain line (if
used).
6.3 Downflow/Horizontal Right Installation
IMPORTANT NOTE: In the downflow application, to pre-vent coil
pan sweating, a downflow kit (DFK) is avail-able through your local
Goodman distributor. The DFK isnot supplied with the air handler
and is required byGoodman on all downflow installations. See Table
1 forthe correct DFK and follow the instructions provided
forinstallation.
-
5UPFLOW DOWNFLOWFigure 2 Figure 3
HORIZONTAL LEFTFigure 4
HORIZONTAL RIGHTFigure 5
DownflowBracket
CenterSupport
FilterBracket
ControlDeck
Upper Tie Plate
Filter AccessPanel
INTERNAL PART TERMINOLOGYFigure 6
NOTE: If removing only the coil access panel from the unit,the
filter access panel must be removed first. Failure to do somay
result in panel damage.
Secondary Drain Portfor Upflow/DownflowApplication
SecondaryDrain Portfor HorizontalApplication
BlowerAccessPanel
CoilAccessPanel
TubingPanel
ThumbScrew
EXTERNAL PART TERMINOLOGYFigure 7
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6Coil Slideson the
downflow bracket
IMPORTANT NOTE:Ensure coil slides on the railsalong the groove
providedon the drain pan side walls. Failure to do so will resultin
improper condensate drainage.
COIL INSTALLATION FOR DOWNFLOWFigure 8
ACCESS PANEL CONFIGURATION FOR DOWNFLOWOR HORIZONTAL RIGHT
Figure 9
7 Refrigerant Lines
This product is factory-shipped with R410A and dry nitrogen
mixture gas under pressure. Use appropriate service tools and
follow these instructions to prevent injury.
A quenching cloth is strongly recommended to prevent scorching
or marring of the equipment finish when brazing close to the
painted surfaces. Use brazing alloy of 5% minimum silver
content.
NOTE: Refrigerant tubing must be routed to allow adequateaccess
for servicing and maintenance of the unit.Do not install the air
handler in a location that violates theinstructions provided with
the condenser. If the unit is locatedin an unconditioned area with
high ambient temperature and/or high humidity, the air handler may
be subject to nuisancesweating of the casing. On these
installations, a wrap of 2"fiberglass insulation with a vapor
barrier is recommended.7.1 Tubing Size
For the correct tubing size, follow the specification for
thecondenser/heat pump.
7.2 Tubing Preparation
All cut ends are to be round, burr free, and clean. Failureto
follow this practice increases the chances for refriger-ant leaks.
The suction line is spun closed and requirestubing cutters to
remove the closed end.
NOTE: To prevent possible damage to the tubing joints,do not
handle coil assembly with manifold or flowratortubes. Always use
clean gloves when handling coil as-semblies.
Applying too much heat to any tube can melt the tube. Torchheat
required to braze tubes of various sizes must beproportional to the
size of the tube. Service personnel mustuse the appropriate heat
level for the size of the tube beingbrazed.
CAUTION
NOTE: The use of a heat shield is strongly recommendedwhen
brazing to avoid burning the serial plate or thefinish of the unit.
Heat trap or wet rags must be used toprotect heat sensitive
components such as service valvesand TXV valves sensing bulb.
7.3 Tubing Connections for TXV Models
TXV models come with factory installed TXV with thebulb
pre-installed on the vapor tube.
-
71. Remove refrigerant tubing panel or coil (lower)
accesspanel.
2. Remove access valve fitting cap and depress the valvestem in
access fitting to release pressure. No pressureindicates possible
leak.
3. Replace the refrigerant tubing panel.
4. Remove the spin closure on both the liquid and suctiontubes
using a tubing cutter.
5. Insert liquid line set into liquid tube expansion and
slidegrommet about 18" away from braze joint.
6. Insert suction line set into suction tube expansion andslide
insulation and grommet about 18" away from brazejoint.
7. Braze joints. Quench all brazed joints with water or awet rag
upon completion of brazing.
REFRIGERANT BULBMUST BE POSITIONEDBETWEEN 10 & 2 OCLOCK
REFRIGERANT BULBMUST BE POSITIONEDBETWEEN 10 & 2 OCLOCK
Figure 10
NOTE: The sensing bulb must be permanently located. Aheat
shield, heat trap, or wet rag must be used during braz-ing to
prevent damage to the TXV valve.
8. Replace access panels, suction line grommet, insulationand
all screws.
RUBBERGROMMET
SUCTION LINEWITH SPIN CLOSURE
Suction Line Grommet
Figure 11
8 Condensate Drain LinesThe coil drain pan has a primary and a
secondary drain with3/4" NPT female connections. The connectors
required are3/4" NPT male, either PVC or metal pipe, and should be
handtightened to a torque of no more than 37 in-lbs. to prevent
damage to the drain pan connection. An insertion depth
ofapproximately 3/8 to 1/2 (3-5 turns) should be expected atthis
torque.
1. Ensure drain pan hole is not obstructed.
2. To prevent potential sweating and dripping on to
finishedspace, it may be necessary to insulate the condensatedrain
line located inside the building. Use Armaflex orsimilar
material.
A secondary condensate drain connection has been providedfor
areas where the building codes require it. Pitch all drainlines a
minimum of 1/4" per foot to provide free drainage.Provide required
support to the drain line to prevent bowing.If the secondary drain
line is required, run the line separatelyfrom the primary drain and
end it where condensate dischargecan be easily seen.NOTE: Water
coming from secondary line means the coilprimary drain is plugged
and needs immediate attention.
Insulate drain lines located inside the building or above
afinished living space to prevent sweating. Install a conden-sate
trap to ensure proper drainage.
NOTE: When units are installed above ceilings, or in
otherlocations where damage from condensate overflow mayoccur, it
is MANDATORY to install a field fabricated auxiliarydrain pan under
the coil cabinet enclosure.
CAUTIONIf secondary drain is not installed, the secondaryaccess
must be plugged.
The installation must include a P style trap that is locatedas
close as is practical to the evaporator coil. See Figure 12for
details of a typical condensate line P trap.NOTE: Trapped lines are
required by many local codes. Inthe absence of any prevailing local
codes, please refer to therequirements listed in the Uniform
Mechanical Building Code.A drain trap in a draw-through application
prevents air frombeing drawn back through the drain line during fan
operationthus preventing condensate from draining, and if
connectedto a sewer line to prevent sewer gases from being drawn
intothe airstream during blower operation.Field experience has
shown condensate drain traps with anopen vertical Tee between the
air handler and the conden-sate drain trap can improve condensate
drainage in someapplications, but may cause excessive air discharge
out ofthe open Tee. Goodman does not prohibit this type of drainbut
we also do not recommend it due to the resulting air leak-age.
Regardless of the condensate drain design used, it isthe installers
responsibility to ensure the condensate drainsystem is of
sufficient design to ensure proper condensateremoval from the coil
drain pan.
-
8Air Handler
3" MIN.POSITIVE LIQUIDSEAL REQUIRED
AT TRAP
DrainConnection
2" MIN.
Figure 12Use of a condensate removal pump is permitted when
nec-essary. This condensate pump should have provisions forshutting
off the control voltage should a blocked drain occur.A trap must be
installed between the unit and the conden-sate pump.
IMPORTANT NOTE: The evaporator coil is fabricated withoils that
may dissolve styrofoam and certain types of plastics.Therefore, a
removal pump or float switch must not containany of these
materials.Tip: Priming the P trap may avoid improper draining at
theinitial installation and at the beginning of the cooling
season.
9 DuctworkThis air handler is designed for a complete supply and
returnductwork system.To ensure correct system performance, the
ductwork is to besized to accommodate 350-450 CFM per ton of
cooling withthe static pressure not to exceed 0.5" in w.c. Refer to
ACCAManual D, Manual S and Manual RS for information on ductsizing
and application. Flame retardant ductwork is to be usedand sealed
to the unit in a manner that will prevent leakage.NOTE: A downflow
application with electric heat must havean L-shaped sheet metal
supply duct without any outlets orregisters located directly below
the heater.9.1 Return Ductwork
DO NOT LOCATE THE RETURN DUCTWORK IN ANAREA THAT CAN INTRODUCE
TOXIC, OR OBJEC-TIONABLE FUMES/ODORS INTO THE DUCTWORK.The return
ductwork is to be connected to the air han-dler bottom (upflow
configuration).
Do not operate this product without all the ductwork
attached.
10 Return Air FiltersEach installation must include a return air
filter. This filteringmay be performed at the air handler using the
factory filterrails or externally such as a return air filter
grille. When usingthe factory filter rails, a nominal 16x20x1,
20x20x1 or24x20x1 (actual dimension must be less than 23-x20)
fil-ter can be installed on a B, C and D cabinet respectively
(thecabinet size is the seventh letter of the model number).
11 Electric HeatRefer to the installation manual provided with
the electric heatkit for the correct installation procedure. All
electric heat mustbe field installed. If installing this option,
the ONLY heat kitsthat are permitted to be used are the HKS series.
Refer tothe air handler units Serial and Rating plate or the HKS
speci-fication sheets to determine the heat kits compatible with
agiven air handler. No other accessory heat kit besides theHKS
series may be installed in these air handlers.
The heating mode temperature rise is dependent upon thesystem
airflow, the supply voltage, and the heat kit size (kW)selected.
Use data provided in Tables 2, 3 and 4 to deter-mine the
temperature rise (F).
NOTE: For installations not indicated above the followingformula
is to be used:
TR = (kW x 3412) x (Voltage Correction) x 1.08 / CFMWhere: TR =
Temperature Rise
kW = Heater Kit Actual kW3412 = Btu per kWVC* = .96 (230 Supply
Volts)
= .92 (220 Supply Volts)= .87 (208 Supply Volts)
1.08 = ConstantCFM = Measured Airflow
*VC (Voltage Correction)NOTE: The Temperature Rise Tables can
also be used toestimate the air handler airflow delivery. When
using thesetables for this purpose set the room thermostat to
maximumheat and allow the system to reach steady state
conditions.Insert two thermometers, one in the return air and one
in thesupply air. The temperature rise is the supply air
temperatureminus the return air temperature. Using the temperature
risecalculated, CFM can be estimated from the TR formula above.See
Technical Manual and/or Service Manual for moreinformation.
-
911.1 No Electric Heat Installed
If no electric heat accessory kit is installed, a cover
platemust be installed over the opening for electric heat.
Thiscover plate kit is available from Goodman and Amanabrand
distributors.
3 5 6 8 10 15 19/20 25800 12 19 23 31 371000 9 15 19 25 30
441200 8 12 15 21 25 37 49 621400 7 11 13 18 21 32 42 531600 6 9 12
15 19 28 37 461800 5 8 10 14 16 25 33 412000 5 7 9 12 15 22 30
37
CFM HEAT KIT NOMINAL kW
230/1/60 SUPPLY VOLTAGE - TEMP. RISE FTable 2
3 5 6 8 10 15 19/20 25800 11 18 22 30 35
1000 9 14 18 24 28 421200 7 12 15 20 24 35 47 591400 6 10 13 17
20 30 40 511600 6 9 11 15 18 27 35 441800 5 8 10 13 16 24 31 392000
4 7 9 12 14 21 28 35
CFM HEAT KIT NOMINAL kW
220/1/60 SUPPLY VOLTAGE - TEMP. RISE FTable 3
3 5 6 8 10 15 19/20 25800 10 17 21 28 33
1000 8 13 17 22 27 401200 7 11 14 19 22 33 45 561400 6 10 12 16
19 29 38 481600 5 8 10 14 17 25 33 421800 5 7 9 12 15 22 30 372000
4 7 8 11 13 20 27 33
CFM HEAT KIT NOMINAL kW
208/1/60 SUPPLY VOLTAGE - TEMP. RISE FTable 4
3 5 6 8 10 15 19 20 21 or 25AVPTC24B14 730 780 850 950 1025 NR
NR NR NRAVPTC30B14 730 780 850 950 1025 NR NR NR NRAVPTC36C14 NR
1200 1260 1320 1380 1440 1500 NR NRAVPTC42D14 850** 1400 1630 1630
1670 1720 NR 1800 NRAVPTC48D14 NR 1400 1630 1630 1670 1720 NR 1815
1850AVPTC60D14 NR 1620 1670 1720 1750 1780 NR 1850 1850
Heater Kit (Kw)
MINIMUM CFM REQUIRED FOR HEATER KITSTable 5
Please refer to page 16 for specific heater kit application
guidelines.
12 Electrical and Control WiringIMPORTANT: All routing of
electrical wiring must be madethrough provided electrical
knockouts. Do not cut, punctureor alter the cabinet for electrical
wiring.12.1 Building Electrical Service Inspection
This unit is designed for single-phase electrical supplyonly. DO
NOT OPERATE ON A THREE-PHASEPOWER SUPPLY. Measure the power supply
to theunit. The supply voltage must be measured and be inagreement
with the unit nameplate power requirementsand within the range
shown.
Nominal Input Minimum Voltage Maximum Voltage208 - 240 197
253
ELECTRICAL VOLTAGETable 6
12.2 Wire Sizing
Wire size is important to the operation of your equip-ment. Use
the following check list when selecting theappropriate wire size
for your unit.
FIRE HAZARD!To avoid the risk of property damage, personal
injury or fire, use only copper conductors.
HIGH VOLTAGE!
Failure to do so may cause property damage,personal injury or
death.
Disconnect ALL power before servicing.Multiple power sources may
be present.
HIGH VOLTAGE!To avoid property damage, personal injury or death
due to electrical shock, this unit MUST have an
electrical ground. The electrical ground circuit may consist of
an appropriately sized electrical wire connecting the ground lug in
the unit control box to the building electrical service panel.Other
methods of grounding are permitted if performed in accordance with
the National Electric Code (NEC)/American National Standards
Institute (ANSI)/National Fire Protection Association (NFPA) 70 and
local/state codes. In Canada, electrical grounding is to be in
accordance with the Canadian Electric Code (CSA) C22.1.
uninterrupted, unbroken
-
10
Wire used must carry the Minimum Circuit Ampac-ity (MCA) listed
on the units Series and Rating Plate.
Refer to the NEC (USA) or CSA (Canada) for wire siz-ing. The
unit MCA for the air handler and the optionalelectric heat kit can
be found on the unit Series andRating Plate.
Wire must be sized to allow no more than a 2% volt-age drop from
the building breaker/fuse panel tothe unit.
Wires with different insulation temperature rating havevarying
ampacities - be sure to check the temperaturerating used.
Refer to the latest edition of the National Electric Codeor in
Canada the Canadian Electric Code when deter-mining the correct
wire size.
12.3 Maximum Overcurrent Protection (MOP)
Every installation must include an NEC (USA) or CEC(Canada)
approved overcurrent protection device. Also,check with local or
state codes for any special regionalrequirements.
Protection can be in the form of fusing or HACR stylecircuit
breakers. The Series and Rating Plate providesthe maximum
overcurrent device permissible.
NOTE: Fuses or circuit breakers are to be sized largerthan the
equipment MCA but not to exceed the MOP.
12.4 Electrical Connections Supply Voltage
IMPORTANT NOTE: USE COPPER CONDUCTORSONLY.
Knockouts are provided on the air handler top paneland sides of
the cabinet to allow for the entry of thesupply voltage conductors,
as shown in Figure 13. Ifthe knockouts on the cabinet sides are
used for electri-cal conduit, an adapter ring must be used in order
tomeet UL1995 safety requirements. An NEC or CECapproved strain
relief is to be used at this entry point.Some codes/municipalities
require the supply wire tobe enclosed in conduit. Consult your
local codes.
Side ofCabinet
Top ofCabinet
KNOCK-OUT FOR ELECTRICAL CONNECTIONSFigure 13
12.4.1 Air Handler Only (Non-Heat Kit Models)
The power supply connects to the stripped black andred wires
contained in the air handler electrical com-partment. Attach the
supply wires to the air handlerconductors as shown in the unit
wiring diagram usingappropriately sized solderless connectors or
other NECor CEC approved means. A ground lug is also providedin the
electrical compartment. The ground wire fromthe power supply must
be connected to this ground lug.
12.4.2 Air Handler - Non-Circuit Breaker Heat Kits
A terminal block is provided with the HKS kit to attachthe power
supply and air handler connections. Followthe HKS Installation
Manual and wiring diagram for com-plete wiring details.
12.4.3 Air Handler With Circuit Breaker Heat Kit
The air handler has a plastic cover on the upper ac-cess panel
that will require either one or both sectionsto be removed to allow
the heat kit circuit breaker(s) tobe installed. The circuit
breakers have lugs for powersupply connection. See the HKS
Installation Instructionsfor further details.
12.5 Low Voltage Connections
Several combinations of low voltage schemes are pos-sible,
depending on the presence of a heat kit andwhether the heat kit is
single-stage or multi-stage,whether the outdoor section is an air
conditioner or heatpump, and whether the system is setup with a
commu-nicating or traditional thermostat. The 24V-control volt-age
connects the air handler to the room thermostatand condenser. Low
voltage wiring must be copperconductors. A minimum of 18AWG must be
used forinstallations up to 50 and 16AWG for installations over50.
Low voltage wiring must be connected through thetop of the cabinet
or either side. See the ThermostatWiring section of this manual for
typical low voltagewiring connections.
13 Achieving 2% Low Leakage RateEnsure all the gaskets remain
intact on all surfaces as shippedwith the unit. These surfaces are
areas between the uppertie plate and coil access panel, blower
access and coil ac-cess panels, and between the coil access and
filter accesspanels. Ensure upon installation, that the plastic
breaker coveris sitting flush on the blower access panel and all
accesspanels are flush with each other and the cabinet. With
theserequirements satisfied, the unit achieves less than 2%
air-flow leakage when tested in accordance with ASHRAE Stan-dard
193.
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11
14 Start-Up Procedure
Prior to start-up, ensure that all electrical wires are
prop-erly sized and all connections are properly tightened.
All panels must be in place and secured. For Air
Tightapplication, gasket must be positioned at prescribedlocations
to achieve 2% leakage.
Tubing must be leak free.
Condensate line must be trapped and pitched to allowfor
drainage.
Low voltage wiring is properly connected.
Auxiliary drain is installed when necessary and pitchedto allow
for drainage.
Unit is protected from vehicular or other physical dam-age.
Return air is not obtained from, nor are there any returnair
duct joints that are unsealed in, areas where theremay be
objectionable odors, flammable vapors or prod-ucts of combustion
such as carbon monoxide (CO),which may cause serious personal
injury or death.
15 Regular Maintenance
HIGH VOLTAGE!Disconnect ALL power before servicing or installing
this unit. Multiple power sources may be present. Failure to do so
may cause property damage, personal injury or death.
The only item required to be maintained on a regular basis bythe
user is the circulating air filter(s). Filter should be cleanedor
replaced regularly, typically once per month. A certifiedservice
technician must perform all other services.IMPORTANT NOTE: If thumb
screws are used to access thefilter, ensure the washer installed on
the screw behind theaccess panel remains in place after
re-installation.
24 VOLT THERMOSTAT WIRING - NON-COMMUNICATINGTHERMOSTAT
CONNECTIONS
NOTE: Wire routing must not interfere with the circulatorblower
operation or routine maintenance.The air handlers integrated
control module provides termi-nals for Y1 and Y2 and W1 and W2
thermostat con-nections. This allows the air handler to support the
systemsshown in the following table. Refer to the following figures
fortypical connections to the integrated control module.
Ther-mostat wiring entrance holes are located in the top of
theblower. Wire routing must not interfere with circulator
bloweroperation or routine maintenance.
COOLING HEAT PUMP HEATING ELECTRIC HEATING
1-STAGE ------ 1- or 2-STAGE2-STAGE ------ 1- or 2-STAGE1-STAGE
1-STAGE ------2-STAGE 2-STAGE ------1-STAGE 1-STAGE 1- or
2-STAGE2-STAGE 2-STAGE 1- or 2-STAGE
NOTE: A removable plug connector is provided with thecontrol to
make thermostat wire connections. This plug maybe removed, wire
connections made to the plug, and replaced.It is STRONGLY
recommended that you do not connectmultiple wires into a single
terminal. Wire nuts arerecommended to ensure one wire is used for
each terminal.Failure to do so may result in intermittent
operation.
Air Handler IntegratedControl Module
Typical Single-Stage Cool, Single-Stage Heat Thermostat
Dehumidistat[Optional]
Remote Condensing Unit(Single-Stage AC)
NEU
HOT
1 2 R C G W1 Y1 Y2 O DEHUM
R C G W1 Y1
R C Y
Place Jumper Between Y1and O for Proper
Dehumidification Operationand Proper Ramping
Profile Operation
W2
Typical Single-Stage Cooling with Single-Stage
Heating______________________________________
Air Handler IntegratedControl Module
Typical Two-Stage Cool, Two-Stage Heat Thermostat
Dehumidistat[Optional]
Remote Condensing Unit(Two-Stage AC)
NEU
HOT
1 2 R C G W1 W2 Y1 Y2 O DEHUM
R C G W1 W2 Y1 Y2
R C Y1 Y2
Place Jumper Between Y1and O for Proper
Dehumidification Operationand Proper Ramping
Profile Operation
Typical Two-Stage Cooling with Two-Stage Heating
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12
1 2 R CAir Handler
Integrated Control Module
Typical Single-Stage Cool,Single-Stage Heat
Heat Pump Thermostat
Dehumidistat[Optional]
G W1 W2 Y1 Y2 O DEHUM
Remote Condensing Unit(Single-Stage HP)
NEU
HOT
W/ER C G Y1 O
R C W1 Y O
Typical Single-Stage Heat Pump with
Auxiliary/EmergencyHeating
1 2 R CAir Handler
Integrated Control Module
Typical Two-Stage Cool,Two-Stage Heat
Heat Pump Thermostat
Dehumidistat[Optional]
G W1 W2 Y1 Y2 O DEHUM
Remote Condensing Unit(Two-Stage HP)
NEU
HOT
W/ER C G W2 Y1 Y2 O
R C W1 Y1 Y2 O
Typical Two Stage Heat Pump heating and Auxiliary/Emergency
Heating
24 VOLT DEHUMIDISTAT WIRING - NON-COMMUNICATINGTHERMOSTAT
CONNECTIONSThe optional usage of a dehumidistat allows the air
handlerscirculator blower to operate at a slightly lower speed
during acombined thermostat call for cooling and dehumidistat
callfor dehumidification. This lower blower speed enhances
de-humidification of the conditioned air as it passes through theAC
coil. For proper function, a dehumidistat applied to thisair
handler must operate on 24 VAC and utilize a switch whichopens on
humidity rise.To install/connect a dehumidistat:
1. Turn OFF power to air handler.
2. Secure the dehumidistat neutral wire (typically the
whitelead) to the screw terminal marked DEHUM on the airhandlers
integrated control module.
3. Secure the dehumidistat hot wire (typically the blacklead) to
the screw terminal marked R on the airhandlers integrated control
module.
4. Secure the dehumidistat ground wire (typically the greenlead)
to the ground screw on the air handler. NOTE:Ground wire may not be
present on all dehumidistats.
5. To enable the dehumidification function, move the
de-humidification dip switch (S7) from OFF to ON. Seefollowing
figure.
6. Turn ON power to air handler.
ON
OFF
Move to theON positionto enable
dehumidification
S5 S6 S7 S8
Dip Switches - Dehumidification Enable
AUXILIARY ALARM SWITCHThe control is equipped with two Auxiliary
Alarm terminalslabeled CAS which can be utilized with communicating
modesetups (typically used for condensate switch wiring but couldbe
used with compatible C02 sensors or fire alarms).Legacy mode useIn
a legacy system (Non-communicating), this feature is
notoperational. Any auxiliary alarm switch must be used to
in-terrupt the Y1 signal either to the indoor or outdoor unit.
CASSWITCH
Communication mode useThis feature can be activated or
deactivated through thethermostat user menus. An auxiliary alarm
switch must benormally closed and open when the base pans water
levelin the evaporator coil reaches a particular level. The
con-trol will respond by turning off the outdoor compressor
anddisplay the proper fault codes. If the switch is detectedclosed
for 30 seconds, normal operation resumes and theerror message will
be removed.
AVPTC MOTOR ORIENTATIONIf the unit is in the upflow position,
there is no need to rotatethe motor. If the unit is in the downflow
position, loosen mo-tor mount and rotate motor as shown in the
AVPTC MotorOrientation figure below. Be sure motor is oriented with
thefemale connections on the casing down. If the motor is
notoriented with the connections down, water could collect inthe
motor and may cause premature failure.
FEMALE CONNECTIONS
SIDE VIEW
WAR
NINGSOFTW
ARE VER.
TOP
FRONT VIEW
AVPTC Motor Orientation
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13
COM
THTR
DE
CAS
HUM
O
R
21
C
2
1
ST4
ST3
ST2
ST1
3A
C
Y2
24VAC
FUSE
W1W2
R
C
G
W1
W2
Y1
3
2
Dip Switches
Green CFM LED
Seven SegmentLED
AuxiliaryAlarms
Communicating Board
CIRCULATOR BLOWERThis air handler is equipped with a multi-speed
circulatorblower. This blower provides ease in adjusting blower
speeds.The Specification Sheet applicable to your model provides
anairflow table, showing the relationship between airflow (CFM)and
external static pressure (E.S.P.), for the proper selectionof
heating and cooling speeds. The heating blower speed isshipped set
at 21kW or 25kW, and the cooling blower speedis set at D. These
blower speeds should be adjusted by theinstaller to match the
installation requirements so as to pro-vide the correct electric
heating CFM and correct cooling CFM.Use the CFM LED (green) to
obtain an approximate airflowquantity. The green CFM LED blinks
once for each 100 CFMof airflow.
1. Determine the tonnage of the cooling system installedwith the
air handler. If the cooling capacity is in BTU/hrdivide it by
12,000 to convert capacity to TONs.
Example: Cooling Capacity of 30,000 BTU/hr.
30,000/12,000 = 2.5 Tons
2. Determine the proper airflow for the cooling system.
Mostcooling systems are designed to work with airflows be-tween 350
and 450 CFM per ton. Most manufacturersrecommend an airflow of
about 400 CFM per ton.
Example: 2.5 tons X 400 CFM per ton = 1000 CFMThe cooling system
manufacturers instructions must bechecked for required airflow. Any
electronic air cleaners orother devices may require a specific
airflow; consult installa-tion instructions of those devices for
requirements.
3. Knowing the air handler model, locate the high stagecooling
airflow charts in the Specification Sheet appli-cable to your
model. Look up the cooling airflow deter-mined in step 2 and find
the required cooling speed andadjustment setting.
Example: An AVPTC30C14 air handler installed witha 2.5 ton air
conditioning system. The airflow needed is1000 CFM. Looking at the
cooling speed chart forAVPTC30C14, find the airflow closest to 1000
CFM. Acooling airflow of 1000 CFM can be attained by settingthe
cooling speed to C and the adjustment to 0 (noadjustment).
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14
4. Locate the blower speed selection DIP switches on
theintegrated control module. Select the desired coolingspeed tap
by positioning switches 1 and 2 appropriately.If airflow adjustment
is required, set dip switch S8 (trimenable) to ON (trim enable
default is off). Then selectthe desired adjust tap by positioning
switches S3 andS4 appropriately. Refer to the following Airflow
AdjustTaps figure for switch positions and their correspondingtaps.
Verify CFM by counting the number of times thegreen CFM LED
blinks.
1
2
1
2
1
2
1
2
OFF OFF OFF OFFON ON ON ON
Tap A Tap B
Cooling Airflow Speed Tap (*indicates factory setting)
Tap C Tap D*
3
4
OFF OFF OFF OFFON ON ON ON
+5% -5%
Airflow Adjust Taps (*indicates factory setting)
+10% -10%
3
43
4
3
4
Dip Switches - Cooling Airflow and Airflow Adjust Taps
5. Continuous fan speeds that provide 25, 50, 75, and 100%of the
air handlers maximum airflow capability are se-lectable via dip
switches S12 and S13.
If the air handlers maximum airflow capability is 2000CFM and
25% continuous fan speed is selected, the con-tinuous fan speed
will be 0.25 x 2000 CFM = 500 CFM.
12
13
12
13
12
13
12
13
OFF OFF OFF OFFON ON ON ON
25% 50%*
Fan Only Selection (*indicates factory setting)
75% 100%
12
13
12
13
12
13
12
13
OFF OFF OFF OFFON ON ON ON
Fan Only Selection (*indicates factory setting)
6. The multi-speed circulator blower also offers severalcustom
ON/OFF ramping profiles. These profiles maybe used to enhance
cooling performance and increasecomfort level. The ramping profiles
are selected usingDIP switches 5 and 6. Refer to the following
DipSwitches - Cooling Airflow Ramping Profiles figure forswitch
positions and their corresponding taps. Refer tothe bullet points
below for a description of each ramp-ing profile. Verify profile
selection by counting the greenCFM LED blinks and timing each step
of the rampingprofile.
NOTE: Upon start up in communicating mode the circuit board may
display an Ec error. This is an indication that the dipswitches on
the control board need to be configured in accordance with the
Electric Heating Airflow Table. Configuringthe dip switches and
resetting power to the unit will clear the error code.
Within the thermostat user menu, CTK0* communicating thermostat
will display 20 kW for OFF-OFF-ON dip switchselection and 21 kW for
OFF-OFF-OFF dip switch selection.
S9
S10
OFF OFF OFF OFFON ON ON ON
21 kW* or25 kW*
19 kW or20 kW
Electric Heating Airflow (*indicates factory setting)
15 kW 10 kW
OFF OFF OFF OFFON ON ON ON
8 kW 6 kW 5 kW 3 kW
S11
S9
S10
S11
S9
S10
S11
S9
S10
S11
S9
S10
S11
S9
S10
S11
S9
S10
S11
S9
S10
S11
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15
Profile A provides only an OFF delay of one (1) minuteat 100% of
the cooling demand airflow.
OFF100% CFM 100% CFM
1 min
OFF
Profile B ramps up to full cooling demand airflow by
firststepping up to 50% of the full demand for 30 seconds.The motor
then ramps to 100% of the required airflow.A one (1) minute OFF
delay at 100% of the cooling air-flow.
50% CFM
1/2 min
100% CFM 100% CFM
1 minOFF OFF
Profile C ramps up to 82% of the full cooling demandairflow and
operates there for approximately 7 1/2 min-utes. The motor then
steps up to the full demand air-flow. Profile C also has a one (1)
minute 100% OFFdelay.
100% CFMOFF OFF
Profile D ramps up to 50% of the demand for 1/2 minute,then
ramps to 82% of the full cooling demand airflowand operates there
for approximately 7 1/2 minutes.The motor then steps up to the full
demand airflow.Profile D has a 1/2 minute at 50% airflow OFF
delay.
OFFOFF
S5
S6
S5
S6
S5
S6
S5
S6
OFF OFF OFF OFFON ON ON ON
Tap A* Tap B Tap C Tap D
Dip Switches - Cooling Airflow Ramping Profiles
7. If an electric heater kit has been installed, determine
theheater kilowatt (kW) rating. Using the Electric Heat Air-flow
table on page 16, set dip switches 9, 10, and 11 forthe installed
heater. The adjust setting (already estab-lished by the cooling
speed selection) also applies to theelectric heater kit airflow.
Thus, the electric heater air-flow is adjusted by the same amount.
This does not ap-ply to systems setup with a communicating
thermostat.See Set-Up section in the AIR HANDLER ADVANCED FEA-TURES
MENU on page 22. Verify selected CFM by count-ing the green CFM LED
blinks.
If an electric heater kit has not been installed, set
dipswitches 9, 10, and 11 to any valid heater kit setting(see
ariflow table for valid settings). This will prevent anEc Error
code from being displayed.
NOTE: For installations not indicated in the
precedingTemperature Rise Tables, the following formula is to be
used:
TR = (kW x 3412) x (Voltage Correction) x (1.08 x CFM)Where: TR
= Temperature RisekW = Heater Kit Actual kW3412 = Btu per kWVoltage
Correction =.96 (230 Supply Volts)
=.92 (220 Supply Volts)=.87 (208 Supply Volts)
1.08 = ConstantCFM = Measured Airflow
NOTE: The Temperature Rise Tables can also be used todetermine
the air handler airflow delivery. When using thesetables for this
purpose set the room thermostat to maximumheat and allow the system
to reach steady state conditions.Insert two thermometers, one in
the return air and one in thesupply air. The temperature rise is
the supply air temperatureminus the room air temperature.Use HKR
specification sheets to determine the HKR avail-able for a given
air handler.
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16
HTR kW 9 10 11 AVPTC24B14A AVPTC30C14A AVPTC36C14A AVPTC42D14A
AVPTC48D14A AVPTC60D14A3 ON ON ON 730 730 NR 850** NR NR5 ON ON OFF
780 780 1200 1400 1400 16206 ON OFF ON 850 850 1260 1630 1630 16708
ON OFF OFF 950 950 1320 1630 1630 1720
10 OFF ON ON 1025 1025 1380 1670 1670 175015 OFF ON OFF NR NR
1440 1720 1720 178019* NR NR 1500 NR NR NR20 NR NR NR 1800 1815
1850
21 or 25* OFF OFF OFF NR NR NR NR 1850 1850
ELECTRIC HEAT AIRFLOW TABLE
OFF OFF ON
B ------- 30 sec/50% 60 sec/100%
Speed Selection Dip Switches
A OFF OFF OFF OFF OFF OFF
TAP S1 S2 S3 S4 S5 S6
B ON OFF ON OFF ON OFF
A ------- -------- 60 sec/100%
To set Airflow: (1) Select model and desired High Stage
CoolingAirflow. Determine the corresponding tap (A, B, C, D). Set
dipswitches S1 and S2 to the appropriate ON / OFF positions.(2)
Select model and installed electric heater size. Set dipswitches
S9, S10, and S11 to the appropriate ON / OFF positions.(3) If
airflow adjustment is required set Trim Enable Switch toS8ON (OFF =
0% Trim) and set S3 and S4 to appropriate ON / OFFpositions. Tap A
is +5%,Tap B is -5%, Tap C is +10%, Tap D is-10%.
D ON ON ON ON ON ON
Cool Adjust ProfileSelection Selection Selection Switches
Switches Switches
Notes:1. Airflow data shown applies to legacy mode operation
only. For a fully communicating system, please see the outdoor
unit's installation instructions for cooling and heat pump airflow
data. See ComfortNet System-Airflow Consideration section for
details.2. Airflow blink codes are approximations of actual
airflow.
Profiles Pre-Run Short-Run OFF Delay
C OFF ON OFF ON OFF ON
C ------- 7.5 min/82% 60 sec/100%
D 30 sec/50% 7.5 min/82% 30 sec/50%
To
Set Comfort
mode: Select desired Comfort Mode Profile (seeprofiles above).
Set dip switches S5 and S6 to appropriate ON /OFF
positions.Dehumidification: To enable, set dip switch S7 to ON.
Coolingairflow will be reduced to 85% of nominal value during cool
callwhen Dehum command is present. To disable, set S7 to OFF.
Continuous
Fan
Speed: Use dip switches S12 and S13 to selectone of 4 continuous
fan speeds, Tap A is 25%. Tap B is 50%, TapC is 75%, Tap D is
100%.
ContinuousFan
Speed
S12 S13
OFF
ON
OFF
ON
OFF
OFF
ON
ON
Model Speed tap Low stage(CFM)High stage
(CFM)A 410 610B 565 835C 660 970D 765 1125A 440 610B 605 835C
740 1020D 885 1225A 500 725B 700 1000C 930 1330D 1120 1600A 560
800B 763 1090C 994 1420D 1225 1750A 900 1350B 1035 1550C 1140 1700D
1200 1800A 1210 1610B 1365 1815C 1450 1920D 1525 2025
AVPTC60D14**
Cooling/Heat Pump Airflow Table
AVPTC24B14**
AVPTC30C14**
AVPTC36C14**
AVPTC42D14**
AVPTC48D14**
NOTE: Airflow blink codes are approximations of actual airflow.
Airflowsprovided are at 0.3 static.
Note: Airflow data shown applies to the electric heat only in
either legacy mode or communicating mode operation* Within
thermostat user menu, CTK0* communicating thermostat will display
20 kW for OFF-OFF-ON dip switch selection and 21 kW for OFF-OFF-OFF
dip switch selection.NR - Not rated For match up with a 2 ton
outdoor unit: Heater kit application shall not exceed 10 kW.
Airflow for 5 kW up to 10 kW heater kits shall be set to 850 cfm
speed tap of ON-ON-ON. For match up with a 3 ton outdoor unit:
Heater kit application shall not exceed 15 kW. Airflow for 5 kW up
to 15 kW heater kits shall be set to 1400 cfm speed tap of
ON-ON-OFF. For match up with a 3.5 ton outdoor unit: Heater kit
application shall not exceed 20 kW. Airflow for 5 kW up to 20 kW
heater kits shall be set to 1620 cfm speed tap of ON-ON-OFF.** 3 kW
heater kit is not applicable for this indoor application.
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17
TROUBLESHOOTING
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONSNOTE: Discharge bodys
static electricity before touchingunit. An electrostatic discharge
can adversely affect electricalcomponents.Use the following
precautions during air handler installationand servicing to protect
the integrated control module fromdamage. By putting the air
handler, the control, and the per-son at the same electrostatic
potential, these steps will helpavoid exposing the integrated
control module to electrostaticdischarge. This procedure is
applicable to both installed anduninstalled (ungrounded)
blowers.
1. Disconnect all power to the blower. Do not touch
theintegrated control module or any wire connected to thecontrol
prior to discharging your bodys electrostaticcharge to ground.
2. Firmly touch a clean, unpainted, metal surface of the
airhandler blower near the control. Any tools held in apersons hand
during grounding will be discharged.
3. Service integrated control module or connecting
wiringfollowing the discharge process in step 2. Use cautionnot to
recharge your body with static electricity; (i.e., donot move or
shuffle your feet, do not touch ungroundedobjects, etc.). If you
come in contact with an ungroundedobject, repeat step 2 before
touching control or wires.
4. Discharge your body to ground before removing a newcontrol
from its container. Follow steps 1 through 3 ifinstalling the
control on a blower. Return any old ornew controls to their
containers before touching anyungrounded object.
DIAGNOSTIC CHART
HIGH VOLTAGE!TO AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRICAL
SHOCK, DISCONNECT ELECTRICAL POWER BEFORE PERFORMING ANY SERVICE OR
MAINTENANCE.
WARNING
Refer to the Troubleshooting Chart at the end of this manualfor
assistance in determining the source of unit operationalproblems.
The 7 segment LED display will provide any ac-tive fault codes. An
arrow printed next to the display indi-cates proper orientation
(arrow points to top of display). Seefollowing image.
7 SegmentDiagnosticDisplay
Heat Kit Selection
ModelHKSX03XC
HKSX05XC
HKSX06XC
HKSX08XC
HKSX10XC
HKSC05XC
HKSC08XC
HKSC10XC
HKSC15XA
HKSC15XB
HKSC15XF
HKSC19CA
HKSC19CB
HKSC20DA
HKSC20DB
HKSC20XF
HKSC25DC
AVPTC24B14 X X X X X X X X
AVPTC30C14 X X X X X X X X
AVPTC36C14 X X X X X X X X X X X X
AVPTC42D14 X X X X X X X X X X X X X
AVPTC48D14 X X X X X X X X X X X X X X
AVPTC60D14 X X X X X X X X X X X X X X
C Circuit breaker option
-
18
FAULT RECALLThe integrated control module is equipped with a
momentarypush-button switch that can be used to display the last
sixfaults on the 7 segment LED display. The control must be
inStandby Mode (no thermostat inputs) to use the feature. De-press
the push-button for approximately two seconds andless than five
seconds. The LED display will then display thesix most recent
faults beginning with the most recent faultand decrementing to the
least recent fault. The faults maybe cleared by depressing the
button for greater than five sec-onds.
NOTE: Consecutively repeated faults are displayed amaximum of
three times. Example: A clogged return air filtercauses the air
handlers motor to repeatedly enter a limitingcondition. The control
will only store this fault the first threeconsecutive times the
fault occurs.
COMFORTNET SYSTEM
OVERVIEWThe ComfortNet system is a system that includes
aComfortNet compatible air handler and air conditioner or heatpump
with a CTK0* thermostat. Any other system configura-tions are
considered invalid ComfortNet systems and mustbe connected as a
traditional (or non-communicating) sys-tem (see the 24 VOLT
THERMOSTAT WIRING - NON-COMMUNICATINGTHERMOSTAT CONNECTIONS section
for details).A ComfortNet heating/air conditioning system differs
from anon-communicating/traditional system in the manner in
whichthe indoor unit, outdoor unit and thermostat interact with
oneanother. In a traditional system, the thermostat sends com-mands
to the indoor and outdoor units via analog 24 VACsignals. It is a
one-way communication path in that the in-door and outdoor units
typically do not return information tothe thermostat.On the other
hand, the indoor unit, outdoor unit, and thermo-stat comprising a
ComfortNet system communicate digitallywith one another. It is now
a two-way communications path.The thermostat still sends commands
to the indoor and out-door units. However, the thermostat may also
request andreceive information from both the indoor and outdoor
units.This information may be displayed on the ComfortNet
ther-mostat. The indoor and outdoor units also interact with
oneanother. The outdoor unit may send commands to or re-quest
information from the indoor unit. This two-way
digitalcommunications between the thermostat and subsystems
(in-door/outdoor unit) and between subsystems is the key
tounlocking the benefits and features of the ComfortNet
sys-tem.Two-way digital communications is accomplished using
onlytwo wires. The thermostat and subsystem controls are pow-ered
with 24 VAC Thus, a maximum of 4 wires between theequipment and
thermostat is all that is required to operatethe system.
AIRFLOW CONSIDERATIONAirflow demands are managed differently in
a fully commu-nicating system than they are in a non-communicating
wiredsystem. The system operating mode (as determined by
thethermostat) determines which unit calculates the system air-flow
demand. If the indoor unit is responsible for determin-ing the
airflow demand, it calculates the demand and sendsit to the ECM
motor. If the outdoor unit or thermostat is re-sponsible for
determining the demand, it calculates the de-mand and transmits the
demand along with a fan request tothe indoor unit. The indoor unit
then sends the demand tothe ECM motor. The table below lists the
various ComfortNetsystems, the operating mode, and airflow demand
source.
System System Operating Mode Airflow Demand Source
Cooling Air Conditioner
Heating Air Handler
Continuous Fan Thermostat
Cooling Heat Pump
Heat Pump Heating Only
Heat Pump
HP + Electric Heat Strips
> of Heat Pump or Air Handler Demand
Electric Heat Strips Only Air Handler
Continuous Fan Thermostat
Air Conditioner + Air Handler
Heat Pump + Air Handler
For example, assume the system is a heat pump matchedwith an air
handler. With a call for low stage cooling, theheat pump will
calculate the systems low stage coolingairflow demand. The heat
pump will then send a fanrequest along with the low stage cooling
airflow demand tothe air handler. Once received, the air handler
will send thelow stage cooling airflow demand to the ECM motor.
TheECM motor then delivers the low stage cooling airflow.See the
applicable ComfortNet air conditioner or heatpump installation
manual for the airflow delivered duringcooling or heat pump
heating.In continuous fan mode, the CTK0* thermostat provides
theairflow demand. Depending on which CTK0* thermostat hasbeen
installed three or four continuous fan speeds may beavailable. If
the thermostat provides three speeds (low,medium, high) they
correspond to 25%, 50% and 75%,respectively, of the air handlers
maximum airflow capability.If the thermostat provides four
continuous fan speeds then a100% airflow option is added. During
continuous fan operation,the thermostat sends a fan request along
with the continuousfan demand to the air handler. The air handler,
in turn, sendsthe demand to the ECM motor. The ECM motor delivers
therequested continuous fan airflow.
-
19
CTK0* THERMOSTAT WIRINGNOTE: Refer to section Electrical
Connections for 208/230volt line connections to the air
handler.NOTE: A removable plug connector is provided with
thecontrol to make thermostat wire connections. This plug maybe
removed, wire connections made to the plug, and replaced.It is
STRONGLY recommended that you do not connectmultiple wires into a
single terminal. Wire nuts arerecommended to ensure one wire is
used for eachterminal. Failure to do so may result in intermittent
operation.Typical 18 AWG thermostat wire may be used to wire
thesystem components. One hundred (100) feet is the maxi-mum length
of wire between indoor unit and outdoor unit, orbetween indoor unit
and thermostat.
FOUR-WIRE INDOOR AND OUTDOOR WIRINGTypical wiring will consist
of four wires between the indoorunit and outdoor unit and between
the indoor unit and ther-mostat. The required wires are: (a) data
lines, 1 and 2; (b)thermostat R (24 VAC hot) and C (24 VAC
common).
1 2 R C
1 2 R C
CTK0*Thermostat
CT CompatibleAir Handler BlowerIntegrated Control Module
CT Compatible AC/HPIntegrated Control Module
1 2 R C
System Wiring Using Four-Wires
TWO-WIRE OUTDOOR, FOUR-WIRE INDOOR WIRINGTwo wires only may be
utilized between the indoor and out-door units. For this wiring
scheme, only the data lines, 1 and2, are required between the
indoor and outdoor units. A40VA, 208/230 VAC to 24 VAC transformer
must be installedin the outdoor unit to provide 24 VAC power to the
outdoorunits electronic control. See kit instructions for
mountingand wiring instructions. Four wires are required between
theindoor unit and thermostat.
1 2 R C
1 2 R C
CTK0*Thermostat
CT CompatibleAir Handler BlowerIntegrated Control Module
CT CompatibleAC/HP IntegratedControl Module
40VA Transformer
208/230 VAC 24 VAC
1 2 R C
System Wiring using Two-Wires between Air Handler and AC/HP and
Four-Wires between Air Handler and Thermostat
COMFORTNET SYSTEM ADVANCED FEATURESThe ComfortNet system permits
access to additional systeminformation, advanced set-up features,
and advanced diag-nostic/troubleshooting features. These advanced
featuresare organized into a menu structure. See the AIR
HANDLERADVANCED FEATURES MENU section for layout of
menushortcuts.
DIAGNOSTICSAccessing the air handlers diagnostics menu provides
readyaccess to the last six faults detected by the air handler.
Faultsare stored most recent to least recent. Any
consecutivelyrepeated fault is stored a maximum of three times.
Example:A clogged return air filter causes the air handlers motor
torepeatedly enter a limiting condition. The control will only
storethis fault the first three consecutive times the fault
occurs.
NOTE: It is highly recommended that the fault history becleared
after performing maintenance or servicing the airhandler.
NETWORK TROUBLESHOOTINGThe ComfortNet system is a fully
communicating system, andthus, constitutes a network. Occasionally
the need to trouble-shoot the network may arise. The integrated air
handler con-trol has some on-board tools that may be used to
trouble-shoot the network. These tools are: red communications
LED,green receive (Rx) LED, and learn button. Refer
to the Communications Troubleshooting Chart at the end ofthis
manual for error codes, possible causes and correctiveactions
Red communications LED Indicates the status of thenetwork. The
table below indicates the LED status andthe corresponding potential
problem.
Green receive LED Indicates network traffic. Thetable below
indicates the LED status and the corre-sponding potential
problem.
Learn button Used to reset the network. Depressthe button for
approximately 2 seconds to reset thenetwork.
SYSTEM TROUBLESHOOTING
NOTE: Refer to the instructions accompanying theComfortNet
compatible outdoor AC/HP unit fortroubleshooting information.Refer
to the Troubleshooting Chart at the end of this manualfor a listing
of possible air handler error codes, possiblecauses and corrective
actions.
-
20
START-UP PROCEDURE Prior to start-up, ensure that all electrical
connections
are properly sized and tightened.
All panels must be in place and secured. For Air
Tightapplication, neoprene gasket must be positioned at pre-scribed
locations to achieve 2% leakage.
Tubing must be leak free.
Unit should be elevated, trapped and pitched to allowfor
drainage.
Low voltage wiring is connected.
Auxiliary drain is installed when necessary and pitchedto allow
for drainage.
Drain pan and drain tubing has been leak checked.
Return and supply ducts are sealed.
Unit is elevated when installed in a garage or whereflammable
vapors may be present.
Unit is protected from vehicular or other physical dam-age.
Return air is not obtained from any areas where theremay be
objectionable odors, flammable vapors or prod-ucts of combustion
such as carbon monoxide (CO),which may cause serious personal
injury or death.
REGULAR MAINTENANCE
HIGH VOLTAGE!Disconnect ALL power before servicing or installing
this unit. Multiple power sources may be present. Failure to do so
may cause property damage, personal injury or death.
The only item to be maintained on a regular basis by the useris
the circulating air filter(s). Filter should be cleaned or
re-placed regularly. A certified service technician must performall
other services.
NOTE: THESE INSTRUCTIONS ARE SPECIFICALLY FORAVPTC MODELS. DO
NOT USE THESE DIAGRAMS FORANY OTHER MODELS. SEE SEPARATE
INSTALLATIONAND OPERATING INSTRUCTIONS FOR ATUF, ARUF,ARPT, ADPF,
AND ASPF MODELS.
NOTICE: THIS PRODUCT CONTAINS ELECTRONICCOMPONENTS WHICH REQUIRE
A DEFINITEGROUND. PROVISIONS ARE MADE FOR CONNEC-TION OF THE
GROUND. A DEDICATED GROUNDFROM THE MAIN POWER SUPPLY OR AN
EARTHGROUND MUST BE PROVIDED.
-
21
COMMUNICATIONS TROUBLESHOOTING CHART
LED LED Status
Indication Possible Causes Corrective Action(s) Notes &
Cautions
Off x Normal condition x None x None x None 1 Flash x
Communications
Failure x Communications
Failure x Depress Learn Button x Verify that bus BIAS
and TERM dipswitches are in the ON position.
x Depress once quickly for a power-up reset x Depress and
hold
for 2 seconds for an out-of-box reset
Red Communications
LED
2 Flashes x Out-of-box reset x Control power up x Learn
button
depressed
x None x None
Off x No power x Communications
error
x No power to air handler x Open fuse x Communications error
x Check fuses and circuit breakers; replace/reset x Replace
blown fuse x Check for shorts in
low voltage wiring in air handler/system x Reset network by
depressing learn button x Check data 1/ data 2
voltages
x Turn power OFF prior to repair
1 Steady Flash
x No network found x Broken/ disconnected data wire(s) x Air
handler is installed
as a non-communicating/ traditional system
x Check communications wiring (data 1/ data 2 wires) x Check
wire
connections at terminal block x Verify air handler
installation type (non-communicating/ traditional or
communicating) x Check data 1/ data 2
voltages
x Turn power OFF prior to repair x Verify wires at
terminal blocks are securely twisted together prior to inserting
into terminal block x Verify data1 and
data voltages as described above
Rapid Flashing
x Normal network traffic
x Control is talking on network as expected
x None x None
Green Receive LED
On Solid x Data 1/ Data 2 miss-wire
x Data 1 and data 2 wires reversed at air handler, thermostat,
or ComfortNet compatible outdoor AC/HP x Short between data 1
and data 2 wires x Short between data 1
or data 2 wires and R (24VAC) or C (24VAC common)
x Check communications wiring (data 1/ data 2 wires) x Check
wire
connections at terminal block x Check data 1/ data 2
voltages
x Turn power OFF prior to repair x Verify wires at
terminal blocks are securely twisted together prior to inserting
into terminal block x Verify data1 and
data voltages as described above
-
22
AIR HANDLER ADVANCED FEATURES MENU
Submenu Item Indication (for Display Only; not User Modifiable
)Electric Heat Size (HTR KW) Displays the size in kW of the
selected electric heaters.Motor HP (1/2, 3/4, or 1 MTR HP) Displays
the air handler indoor blower motor horsepower.
Heat ON Delay (HT ON) Displays the electric heat indoor blower
ON delay.
Heat OFF Delay (HT OFF) Displays the electric heat indoor blower
OFF delay.
CONFIGURATION
Submenu Item Indication/User Modifiable Options Comments
Fault 1 (FAULT #1) Most recent fault For display onlyFault 2
(FAULT #2) Next most recent fault For display onlyFault 3 (FAULT
#3) Next most recent fault For display onlyFault 4 (FAULT #4) Next
most recent fault For display onlyFault 5 (FAULT #5) Next most
recent fault For display onlyFault 6 (FAULT #6) Least recent fault
For display onlyClear Fault History (CLEAR) NO or YES Selecting YES
clears the fault
historyNOTE: Consecutively repeated faults are shown a maximum
of 3 times
DIAGNOSTICS
Submenu Item Indication (for Display Only; not User Modifiable
)Model Number (MOD NUM) Displays the air handler model numberSerial
Number (SER NUM) Displays the air handler serial number
(Optional)Software (SOFTWARE) Displays the application software
revision
IDENTIFICATION
Submenu Item User Modifiable Options CommentsHeat Airflow
Trim(HT TRM)
-10% to +10% in 2% increments, default is 0%
Trims the heating airflow by the selected amount.
Auxiliary Alarm ON / OFF Enable or disable Auxiliary Alarm
input
SET-UP
Submenu Item Indication (for Display Only; not User
Modifiable)Mode (MODE) Displays the current air handler operating
modeCFM (CFM) Displays the airflow for the current operating
mode
STATUS
-
23
TROUBLESHOOTINGC
om
fort
Net
Th
erm
ost
at O
nly
Sym
pto
ms
of
Ab
no
rmal
Op
erat
ion
(L
egac
y &
Co
mfo
rtN
et
Th
erm
ost
at)
7-S
egm
ent
LE
D
Co
des
C
har
acte
rs
Will
Alt
ern
ate
Fau
lt D
escr
ipti
on
Mes
sag
e C
od
e P
oss
ible
Cau
ses
Co
rrec
tive
Act
ion
s N
ote
s &
Cau
tio
ns
x LE
D d
ispl
ay is
ON
con
tinuo
usly
O
N
x N
orm
al o
pera
tion
Non
e N
one
x N
orm
al o
pera
tion
x N
one
x N
orm
al o
pera
tion
x E
lect
ric h
eate
rs fa
il to
ene
rgiz
e on
a
call
for
W1
or A
uxili
ary/
Em
erge
ncy
heat
x
Inte
grat
ed c
ontr
ol m
odul
e LE
D d
ispl
ay
prov
ides
the
indi
cate
d er
ror
code
. x
Com
fort
Net
th
erm
osta
t C
all f
or
Ser
vice
ic
on il
lum
inat
ed
x C
omfo
rtN
et
ther
mos
tat s
crol
ls
Che
ck A
ir H
andl
er
mes
sage
EC
x
Hea
ter
kit s
elec
ted
via
dips
witc
hes
is to
o la
rge
for
heat
er k
its
spec
ified
in s
hare
d da
ta s
et
HT
R T
OO
LA
RG
E
EC
x
Hea
ter
kit s
elec
ted
via
dips
witc
hes
is to
o la
rge
for
heat
er k
its in
sha
red
data
set
x V
erify
ele
ctric
hea
t dip
switc
h se
tting
s x
Ver
ify th
e in
stal
led
elec
tric
he
ater
is v
alid
for
the
air
hand
ler
blow
er.
Che
ck
nam
epla
te o
r S
peci
ficat
ion
She
et a
pplic
able
to y
our
mod
el*
for
allo
wab
le h
eate
r ki
t(s)
. x
Ver
ify s
hare
d da
ta s
et is
co
rrec
t for
the
spec
ific
mod
el.
Re-
popu
late
dat
a us
ing
corr
ect m
emor
y ca
rd if
re
quire
d.
x T
urn
pow
er O
FF
prio
r to
re
pair.
x
Use
mem
ory
card
for
the
spec
ific
mod
el.
x In
sert
mem
ory
card
B
EF
OR
E tu
rnin
g po
wer
O
N.
Mem
ory
card
may
be
rem
oved
afte
r da
ta is
lo
aded
. x
Tur
n po
wer
off
befo
re
rem
ovin
g m
emor
y ca
rd.
x E
lect
ric h
eat a
irflo
w is
hig
her
than
ex
pect
ed o
n a
call
for
W1
or
Aux
iliar
y/E
mer
genc
y he
at
x In
tegr
ated
con
trol
mod
ule
LED
dis
play
pr
ovid
es th
e in
dica
ted
erro
r co
de.
EC
x
Hea
ter
kit s
elec
ted
via
dips
witc
hes
is to
o sm
all f
or h
eate
r ki
ts
spec
ified
in s
hare
d da
ta s
et
HT
R T
OO
S
MA
LL
EC
x
Hea
ter
kit s
elec
ted
via
dips
witc
hes
is to
o sm
all f
or
heat
er k
its in
sha
red
data
set
x V
erify
ele
ctric
hea
t dip
switc
h se
tting
s x
Ver
ify th
e in
stal
led
elec
tric
he
ater
is v
alid
for
the
air
hand
ler
blow
er.
Che
ck
nam
epla
te o
r S
peci
ficat
ion
She
et a
pplic
able
to y
our
mod
el*
for
allo
wab
le h
eate
r ki
t(s)
. x
Ver
ify s
hare
d da
ta s
et is
co
rrec
t for
the
spec
ific
mod
el.
Re-
popu
late
dat
a us
ing
corr
ect m
emor
y ca
rd if
re
quire
d.
x T
urn
pow
er O
FF
prio
r to
re
pair.
x
Use
mem
ory
card
for
the
spec
ific
mod
el.
x In
sert
mem
ory
card
B
EF
OR
E tu
rnin
g po
wer
O
N.
Mem
ory
card
may
be
rem
oved
afte
r da
ta is
lo
aded
. x
Tur
n po
wer
off
befo
re
rem
ovin
g m
emor
y ca
rd.
x E
lect
ric h
eat a
irflo
w is
hig
her
than
ex
pect
ed o
n a
call
for
W1
or
Aux
iliar
y/E
mer
genc
y he
at
x In
tegr
ated
con
trol
mod
ule
LED
dis
play
pr
ovid
es th
e in
dica
ted
erro
r co
de.
EC
x
Hea
ter
kit s
elec
ted
via
dips
witc
hes
does
not
he
ater
kits
spe
cifie
d in
sh
ared
dat
a se
t
NO
HT
R
MA
TC
H
EC
x
Hea
ter
kit s
elec
ted
via
dips
witc
hes
is d
oesn
t m
atch
he
ater
kits
in s
hare
d da
ta s
et
x V
erify
ele
ctric
hea
t dip
switc
h se
tting
s x
Ver
ify th
e in
stal
led
elec
tric
he
ater
is v
alid
for
the
air
hand
ler
blow
er.
Che
ck
nam
epla
te o
r S
peci
ficat
ion
She
et a
pplic
able
to y
our
mod
el*
for
allo
wab
le h
eate
r ki
t(s)
. x
Ver
ify s
hare
d da
ta s
et is
co
rrec
t for
the
spec
ific
mod
el.
Re-
popu
late
dat
a us
ing
corr
ect m
emor
y ca
rd if
re
quire
d.
x T
urn
pow
er O
FF
prio
r to
re
pair.
x
Use
mem
ory
card
for
the
spec
ific
mod
el.
x In
sert
mem
ory
card
B
EF
OR
E tu
rnin
g po
wer
O
N.
Mem
ory
card
may
be
rem
oved
afte
r da
ta is
lo
aded
. x
Tur
n po
wer
off
befo
re
rem
ovin
g m
emor
y ca
rd.
x In
tegr
ated
con
trol
mod
ule
LED
dis
play
E
F e
rror
cod
e.
x C
omfo
rtN
et
ther
mos
tat
Cal
l for
S
ervi
ce.
EF
x
Aux
sw
itch
open
A
ux A
larm
F
ault
EF
x
Hig
h w
ater
leve
l in
the
evap
orat
ion
coil.
x
Che
ck o
verf
low
pan
and
se
rvic
e x
Tur
n po
wer
OF
F p
rior
to
serv
ice.
-
24
TROUBLESHOOTINGC
om
fort
Net
Th
erm
ost
at O
nly
S
ymp
tom
s o
f A
bn
orm
al O
per
atio
n
(Leg
acy
& C
om
fort
Net
T
her
mo
stat
)
7-S
egm
ent
LE
D
Co
des
C
har
acte
rs
Will
Alt
ern
ate
Fau
lt D
escr
ipti
on
M
essa
ge
Cod
e P
oss
ible
Cau
ses
Co
rrec
tive
Act
ion
s N
ote
s &
Cau
tio
ns
x A
ir ha
ndle
r bl
ower
fails
to o
pera
te
x In
tegr
ated
con
trol
mod
ule
LED
dis
play
pr
ovid
es n
o si
gnal
. x
Com
fort
Net
th
erm
osta
t C
all f
or
Ser
vice
ic
on il
lum
inat
ed
x C
omfo
rtN
et
ther
mos
tat s
crol
ls
Che
ck A
ir H
andl
er
mes
sage
No
Dis
play
x
No
208/
230
volt
pow
er
to a
ir ha
ndle
r bl
ower
or
no
24 v
olt p
ower
to
inte
grat
ed c
ontr
ol
mod
ule
x B
low
n fu
se o
r ci
rcui
t br
eake
r x
Inte
grat
ed c
ontr
ol
mod
ule
has
an in
tern
al
faul
t.
INT
ER
NA
L F
AU
LT
EE
x
Man
ual d
isco
nnec
t sw
itch
OF
F
or 2
4 vo
lt w
ire im
prop
erly
co
nnec
ted
or lo
ose
x B
low
n fu
se o
r ci
rcui
t bre
aker
x
Inte
grat
ed c
ontr
ol m
odul
e ha
s an
inte
rnal
faul
t
x A
ssur
e 20
8/23
0 vo
lt an
d 24
vo
lt po
wer
to a
ir ha
ndle
r bl
ower
and
inte
grat
ed c
ontr
ol
mod
ule.
x
Che
ck in
tegr
ated
con
trol
m
odul
e fu
se (
3A).
Rep
lace
if
nece
ssar
y.
x C
heck
for
poss
ible
sho
rts
in
208/
230
volt
and
24 v
olt
circ
uits
. R
epai
r as
nec
essa
ry.
x R
epla
ce b
ad in
tegr
ated
co
ntro
l mod
ule.
x T
urn
pow
er O
FF
prio
r to
re
pair.
x
Rep
lace
inte
grat
ed
cont
rol m
odul
e fu
se w
ith
3A a
utom
otiv
e fu
se.
x R
epla
ce in
tegr
ated
co
ntro
l mod
ule
with
co
rrec
t rep
lace
men
t par
t x
Rea
d pr
ecau
tions
in
Ele
ctro
stat
ic D
isch
arge
se
ctio
n of
man
ual.
x A
ir ha
ndle
r bl
ower
fails
to o
pera
te.
x In
tegr
ated
con
trol
mod
ule
LED
dis
play
pr
ovid
es in
dica
ted
erro
r co
de.
x C
omfo
rtN
et
ther
mos
tat
Cal
l for
S
ervi
ce
icon
illu
min
ated
. x
Com
fort
Net
th
erm
osta
t scr
olls
C
heck
Air
Han
dler
m
essa
ge.
d0
x D
ata
not y
et o
n ne
twor
k.
NO
NE
T
DA
TA
d0
x
Air
hand
ler
blow
er d
oes
not
cont
ain
any
shar
ed d
ata.
x
Pop
ulat
e sh
ared
dat
a se
t us
ing
mem
ory
card
. x
Tur
n po
wer
OF
F p
rior
to
repa
ir x
Use
mem
ory
card
for
the
spec
ific
mod
el.
x In
sert
mem
ory
card
B
EF
OR
E tu
rnin
g po
wer
O
N.
Mem
ory
card
may
be
rem
oved
afte
r da
ta is
lo
aded
. x
Err
or c
ode
will
be
clea
red
once
dat
a is
lo
aded
. x
Tur
n po
wer
off
befo
re
rem
ovin
g m
emor
y ca
rd
x A
ir ha
ndle
r bl
ower
fails
to o
pera
te.
x In
tegr
ated
con
trol
mod
ule
LED
dis
play
pr
ovid
es in
dica
ted
erro
r co
de.
x C
omfo
rtN
et
ther
mos
tat
Cal
l for
S
ervi
ce
icon
illu
min
ated
. x
Com
fort
Net
th
erm
osta
t scr
olls
C
heck
Air
Han
dler
m
essa
ge.
d1
x In
valid
dat
a on
ne
twor
k.
INV
ALI
D
DA
TA
d1
x
Air
hand
ler
blow
er d
oes
not
cont
ain
an a
ppro
pria
te s
hare
d da
ta s
et.
x P
opul
ate
corr
ect s
hare
d da
ta
set u
sing
mem
ory
card
. x