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AVPTCAIR HANDLERINSTALLATION INSTRUCTIONS
© 2011 Goodman Manufacturing Company, L.P.5151 San Felipe, Suite 500, Houston, TX 77056www.goodmanmfg.com -or- www.amana-hac.comP/N: IO-346C Date: May 2011
THIS PRODUCT CONTAINS ELECTRONIC COMPONENTS WHICH RE-QUIRE A DEFINITE GROUND. PROVISIONS ARE MADE FOR CONNEC-TION OF THE GROUND. A DEDICATED GROUND FROM THE MAINPOWER SUPPLY OR AN EARTH GROUND MUST BE PROVIDED.
IF A “1 FLASH” ERROR CODE OR AN “EC” HTR TOO LARGE ERROR IS ENCOUNTERED ON STARTUP, VERIFY THAT THE ELECTRIC HEATER DIP SWITCHES HAVE BEEN SET TO THE APPROPRIATE HEATER SIZE. SEE PAGES 12 AND 13 FOR THE DIP SWITCH SETTINGS AND HEATER KIT AIRFLOW DELIVERY.
NOTICE
INTRODUCTION
This booklet contains the installation and operating instruc-tions for your air handler. All warnings and precautions withinthis booklet must be observed. Improper installation can re-sult in unsatisfactory operation or dangerous conditions andvoid the warranty. Read this booklet and any instructionspackaged with accessories prior to installation. Give this book-let to the user and explain its provisions. The user shouldretain this booklet for future reference.NOTE: Upon start up in communicating mode the circuit boardwill display a “1 Flash” error code on the diagnostic LED andan “Ec” HTR TO LARGE error at the communicating display.This is an indication that the dip switches on the control boardneed to be configured in accordance with the Electric Heat-ing Airflow Table on page 13 of this manual. Configuring thedip switches and resetting power to the unit will clear theerror code.
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
NOTE: Discharge body’s static electricity before touchingunit. An electrostatic discharge can adversely affectelectrical components.Use the following precautions during modular blower instal-lation and servicing to protect the integrated control modulefrom damage. By putting the modular blower, the control,and the person at the same electrostatic potential, these stepswill help avoid exposing the integrated control module to elec-trostatic discharge. This procedure is applicable to both in-stalled and uninstalled (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 body’s electrostaticcharge to ground.
2. Firmly touch a clean, unpainted, metal surface of themodular blower near the control. Any tools held in aperson’s 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.
IMPORTANT NOTE TO THE OWNER REGARDING PRODUCTWARRANTYYour warranty certificate is supplied as a separate documentwith the unit installed by your contractor. Read the limitedwarranty certificate carefully to determine what is and is notcovered and keep the warranty certificate in a safe place. Ifyou are unable to locate the warranty certificate please con-tact your installing contractor or contact customer service(877-254-4729) to obtain a copy.IMPORTANT: To register your Goodman brand unit, go towww.goodmanmfg.com. Click on the word “Warranty” lo-cated on the left side of the home page. Next, click on theword “Product Registration” located on the left side of theWarranty page and complete the forms in the manner indi-cated on the Product Registration page.To register your Amana® brand unit, go to www.amana-hac.com. Click on the word “Warranty” located on the topright of the home page. Next, click on the word “ProductRegistration” located on the left side of the Warranty pageand complete the forms in the manner indicated on the Prod-uct Registration page.Product limited warranty certificates for models currently inproduction can be viewed at www.goodmanmfg.com orwww.amana-hac.com. If your model is not currently in pro-duction or does not appear on the website, please contactyour installing contractor or contact customer service (877-254-4729) to obtain a copy of your warranty certificate.Each product overview page contains a Product Warrantylink; by clicking on it you will be able to view the limited war-ranty coverage for that specific product. To view warrantyregistration information, click on the Product Warranty texton the left navigation panel on the home page of each web-site. The Online Product Registration pages are located inthis same section.
C US
®
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CHECKING PRODUCT RECEIVED
Upon receiving the unit, inspect it for damage from ship-ment. Claims for damage, either shipping or concealed,should be filed immediately with the shipping company.Check the unit model number, specifications, electrical char-acteristics and accessories to determine if they are correct.In the event an incorrect unit is shipped, it must be returnedto the supplier and must NOT be installed. The manufac-turer assumes no responsibility for installation of incorrectlyshipped units.
REPLACEMENT PARTS
ORDERING PARTSWhen reporting shortages or damages, or ordering repairparts, give the complete unit model and serial numbers asstamped on the unit’s nameplate.Replacement parts for this appliance are available throughyour contractor or local distributor. For the location of yournearest distributor, consult the white business pages, theyellow page section of the local telephone book or contact:
CONSUMER AFFAIRSGOODMAN MANUFACTURING COMPANY, L.P.
7401 SECURITY WAYHOUSTON, TEXAS 77040
877-254-4729
IMPORTANT SAFETY INSTRUCTIONS
RECOGNIZE SAFETY SYMBOLS, WORDS, AND LABELSThe following symbols and labels are used throughout thismanual to indicate immediate or potential hazards. It is theowner’s responsibility to read and comply with all safety in-formation and instructions accompanying these symbols.Failure to heed safety information increases the risk of prop-erty damage, product damage, personal injury or death.
HIGH VOLTAGE!DISCONNECT ALL POWER BEFORE SERVICING. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
WARNING
ONLY INDIVIDUALS MEETING THE REQUIREMENTS OF AN “ENTRY LEVEL TECHNICIAN”, AT A MINIMUM, AS SPECIFIED BY THE AIR CONDITIONING, HEATING AND REFRIGERATION INSTITUTE (AHRI) MAY USE THIS INFORMATION. ATTEMPTING TO INSTALL OR REPAIR THIS UNIT WITHOUT SUCH BACKGROUND MAY RESULT IN PRODUCT DAMAGE, PERSONAL INJURY, OR DEATH.
WARNING
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
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
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.), observe these requirements.
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.
To 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.
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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
CODES & REGULATIONS
This product is designed and manufactured to comply withnational codes. Installation in accordance with such codesand/or prevailing local codes/regulations is the responsibil-ity of the installer. The manufacturer assumes no responsi-bility for equipment installed in violation of any codes or regu-lations.The United States Environmental Protection Agency(EPA) has issued various regulations regarding the in-troduction and disposal of refrigerants. Failure to fol-low these regulations may harm the environment andcan lead to the imposition of substantial fines. Shouldyou have any questions please contact the local office of theEPA.
If replacing an air handler, the system must be manufac-turer approved and Air Conditioning, Heating and Refrigera-tion Institute (AHRI) matched. NOTE: Installation of un-matched systems is strongly discouraged.
FEATURES
This air handler is a part of the ComfortNet™ family of prod-ucts. It may be installed as part of a “non-communicating”system using a standard 24 VAC thermostat. However, withthe CTK0*AA ComfortNet thermostat kit, this air handler maybe installed as part of a digitally communicating system. TheComfortNet system provides automatic airflow configuration,enhanced setup features, and enhanced diagnostics. It alsoreduces the number of thermostat wires to a maximum offour and a minimum of two.
PRE-INSTALLATION INSTRUCTIONS
Carefully read all instructions for the installation prior to in-stalling product. Make sure each step or procedure is un-derstood and any special considerations are taken into ac-count before starting installation. Assemble all tools, hard-ware and supplies needed to complete the installation. Someitems may need to be purchased locally. Make sure every-thing needed to install the product is on hand before start-ing.
LOCATION
NOTE: Air handlers are designed for indoor installationonly.Give special consideration to minimizing the length of refrig-erant tubing when installing air handlers. Refer to RemoteCooling/Heat Pump Service Manual TP-107 Long Line SetApplication R-410A for guidelines. The unit clearance froma combustible surface may be 0". However, service clear-ance is to take precedence. In addition allow a minimum of24" in front of the unit for service clearance.If the unit is located in an area with high ambient tempera-ture and/or high humidity, the air handler may be subject tonuisance sweating of the casing. On these installations, awrap of 2” fiberglass insulation with a vapor barrier is rec-ommended.Do not install the air handler in a location that violates theinstructions provided with the condenser.Consult all appropriate regulatory codes prior to determin-ing final clearances. When installing this unit in an area thatmay become wet, elevate the unit with a sturdy, non-porousmaterial. In installations that may lead to physical damage(i.e. a garage) it is advised to install a protective barrier toprevent such damage.
DUCTWORK
This air handler is designed for a complete supply and re-turn ductwork system.
Do not operate this product without all the ductwork attached.
To ensure correct system performance, the ductwork is tobe sized to accommodate 375-425 CFM per ton of coolingwith the static pressure not to exceed .5" WC. Inadequateduct work that restricts airflow can result in improper perfor-mance and compressor or heater failure. Ductwork is to beconstructed in a manner that limits restrictions and main-tains suitable air velocity. Ductwork is to be sealed to theunit in a manner that will prevent leakage.
RETURN DUCTWORKDO NOT TERMINATE THE RETURN DUCTWORK IN ANAREA THAT CAN INTRODUCE TOXIC, OR OBJECTION-ABLE FUMES/ODORS INTO THE DUCTWORK. The re-turn ductwork is to be introduced into the air handler bottom(upflow configuration).
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RETURN AIR FILTERSEach installation must include a return air filter. This filteringmay be performed at the air handler or externally such as areturn air filter grille. Air handlers mounted in the downfloworientation, including “B” series, require external filtering. Awashable filter is available as an accessory. To ensure opti-mum performance frequent filter cleaning is advised. Referto Air Filter Accessory table for the appropriate filter.
AVPTC Filter Number Qty Required
1830 FIL 36-42(19" x 21")
1
31374260
FIL 48-61(21-1/2" x 23") 1
Air Filter Accessories
ELECTRIC HEAT
Refer to this manual in combination with the instructions pro-vided with the heat kit for the correct installation procedure.The air handlers listed in this manual do not have factoryinstalled electric heat. Electric heat is available as an ac-cessory. If installing this option, the ONLY heat kits that canbe used are the HKR series.
NOTE: The Amana® brand EHK, ECB, EDB, and EDK kitsare NOT approved for use with these air handlers.
HKR INSTALLATIONFollow instructions listed in Installation and Operating Instruc-tions shipped with the heat kit.
ELECTRICAL SUPPLY WIRE AND MOP
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
BUILDING ELECTRICAL SERVICE INSPECTIONThis unit is designed for single-phase electrical supply. DONOT OPERATE ON A THREE-PHASE POWER SUPPLY.Measure the power supply to the unit. The supply voltagemust be in agreement with the unit nameplate power re-quirements and within the range specified below.
Nominal Input Minimum Voltage Maximum Voltage208/240 187 253
Power Supply Voltage
WIRE SIZINGWire size is important to the operation of your equipment.Use the following check list when selecting the appropriatewire size for your unit.
• Wire size must carry the Minimum Circuit Ampac-ity (MCA).
• Refer to the NEC (USA) or CSA (Canada) for wiresizing. The unit MCA for the air handler and the op-tional electric heat kit can be found on the unit Seriesand Rating Plate.
• Wire size allows for no more than a 2% voltagedrop from the building breaker/fuse panel to theunit.
Refer to the latest edition of the National Electric Codeor in Canada the Canadian Electric Code when deter-mining the correct wire size. The following table showsthe current carrying capabilities for copper conductorsrated at 75oC with a 2% voltage drop. Use the tablebelow to determine the voltage drop per foot of vari-ous conductors.
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10 15 20 25 30 35 40 4514 75 50 37 NR NR NR NR NR12 118 79 59 47 NR NR NR NR10 188 125 95 75 63 54 NR NR8 301 201 150 120 100 86 75 686 471 314 235 188 157 134 118 110
*Based on NEC 1996
Maximum Allowable Length in Feetto Limit Voltage Drop to 2%*
Minimum Circuit Ampacity (MCA) Wire Size(AWG)
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 regional re-quirements.Protection can be in the form of fusing or HACR style circuitbreakers. The Series and Rating Plate can be used as aguide for selecting the MAXIMUM overcurrent device.NOTE: Fuses or circuit breakers are to be sized larger thanthe equipment MCA but not to exceed the MOP.
ELECTRICAL CONNECTIONS
Consult the local power company and local codes beforeinstalling this unit. All wiring must be in accordance with theNational Electrical Code as well as all local codes. Knock-outs have been provided on side and top of the cabinet forthe installation of the electrical conduit. If the knockouts onthe cabinet sides are used for electrical conduit, an adapterring must be used in order to meet UL1995 safety require-ments. Use Minimum Circuit Ampacity and type of wire todetermine proper wire size. The unit MUST be properlygrounded. A ground lug is provided in the unit.Check all factory connections before connecting electricalpower to unit to ensure none were loosened or disconnectedduring shipping and handling.
HIGH VOLTAGE!TO PREVENT PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK, DISCONNECT THE ELECTRICAL POWER BEFORE ELECTRICALLY CONNECTING THE UNIT.
WARNING
TO AVOID THE RISK OF FIRE OR EQUIPMENT DAMAGE, USE COPPER CONDUCTORS.
WARNING
TO AVOID THE RISK OF PERSONAL INJURY, WIRING TO THE UNIT MUST BE PROPERLY POLARIZED AND GROUNDED.
CAUTION
ALL WIRING MUST COMPLY WITH APPLICABLE LOCAL AND NATIONAL CODES. TYPE AND LOCATION OF FUSED DISCONNECT SWITCH(ES) MUST COMPLY WITH ALL APPLICABLE CODES AND PROVIDE OVERCURRENT PROTECTION AS SHOWN ON THE NAMEPLATE.
WARNING
208/230 VOLT LINE CONNECTIONSIf heater kits will not be installed, remove the proper sizeknockout for the electrical conduit connection. Connect elec-trical conduit to the unit using two washers to make an ap-proved connection.The power supply wires must be connected to the red andblack power wiring. Two wire nuts are provided in the bagassembly for this connection. Wrap the wire nuts with elec-trical tape. (Insulated crimp type connectors, field supplied,may be substituted for the wire nuts and electrical tape pro-vided proper size connectors are used.) A ground wire MUSTbe connected to the ground lug inside the unit.
AIR HANDLER ONLY (NON-HEAT KIT MODELS)The building supply connects to the stripped black and redwires contained in the air handler electrical compartment cav-ity. A ground screw is also contained in this area. Attach thesupply wires to the air handler conductors as shown in theunit wiring diagram using appropriately sized solderless con-nectors or other NEC or CEC approved means.
AIR HANDLER WITH NON-CIRCUIT BREAKER HEAT KITSA terminal block is provided with the HKR kit to attach thepower supply and air handler connections. Follow the HKRInstallation Manual and wiring diagram for complete wiringdetails.
AIR HANDLER WITH HEAT KITS CONTAINING A CIRCUITBREAKERHKR models with a “C” suffix contain a circuit breaker(s).The air handler has a plastic cover on the access panel thatwill require either one or both sections to be removed to al-low the heat kit circuit breaker(s) to be installed. See theHKR Installation Instructions for further details. The air han-dler wires and supply wires are installed directly onto theHKR circuit breaker(s) as shown in the HKR InstallationManual and wiring diagram.
OPERATION ON 208 VOLT SUPPLYThe unit transformer is factory connected for 240 V opera-tion. If unit is to operate on 208 V, disconnect the red wirefrom terminal 3 of the unit transformer and connect them toterminal 2 of the unit transformer.
LOW VOLTAGE WIRINGLow voltage wiring connections are made at the top of thecabinet. See the 24 Volt Thermostat Wiring section of thismanual for typical low voltage wiring connections. A mini-mum 18 AWG wire must be used for installations up to 100feet.
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24 VOLT THERMOSTAT WIRING - NON-COMMUNICATINGTHERMOSTAT CONNECTIONS
NOTE: Wire routing must not interfere with the circulatorblower operation or routine maintenance.The air handler’s 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 table below. 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, andreplaced. It is strongly recommended that multiple wiresinto a single terminal be twisted together prior to insertinginto the plug connector. Failure to do so may result inintermittent 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
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 CONNECTIONS
The optional usage of a dehumidistat allows the air handler’scirculator blower to operate at a slightly lower speed duringa combined 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 airhandler’s integrated control module.
3. Secure the dehumidistat hot wire (typically the blacklead) to the screw terminal marked “R” on the airhandler’s 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. Turn ON power to air handler.
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To enable the dehumidification function, move the dehumidi-fication dipswitch from OFF to ON. See following figure.
S7 S8
ON
OFF
DEH
UM
Unu
sed
Move to the ON position to enable
dehumidification
Dipswitches - Dehumidification Enable
REFRIGERANT LINES
This product is factory-shipped under pressure. Follow these instructions to prevent injury.
A quenching cloth is strongly recommended to prevent scorching or marring of the equipment finish when welding close to the painted surfaces. Use brazing alloy of 5% minimum silver content.
TUBING PREPARATIONAll cut ends are to be round, burr free, and clean.Failure to follow this practice increases the chancesfor refrigerant leaks. The suction line is spun closedand requires pipe cutters to remove the closed end.
POST BRAZINGQuench all welded joints with water or a wet rag.
PIPING SIZEFor the correct tubing size, follow the specification forthe condenser/heat pump.
SPECIAL INSTRUCTIONS
This coil comes equipped with a thermostatic expansionvalve (TXV) for refrigerant management.
IMPORTANT NOTE: Torch heat required to braze tubes ofvarious sizes is proportional to the size of the tube. Tubes ofsmaller size require less heat to bring the tube to brazingtemperature before adding brazing alloy. Applying too muchheat to any tube can melt the tube. Service personnel mustuse the appropriate heat level for the size of the tube beingbrazed.
NOTE: The use of a heat shield when brazing isrecommended to avoid burning the serial plate or the finishon the unit. HEAT TRAP OR WET RAGS SHOULD BEUSED TO PROTECT HEAT SENSITIVE COMPONENTSSUCH AS SERVICE VALVES AND TXV VALVES.
IMPORTANT NOTE: Sensing bulbs are not permanentlyinstalled at the factory to prevent accidental damageduring brazing. Be sure to follow this checklist step-by-step to ensure the sensing bulb is not damaged duringinstallation.
1. Loosen the 13/16 nut 1 TURN ONLY. No pressure lossindicates possible leak.
2. Remove the nut and discard the cap.
3. Follow the instructions on the caution label, and removethe two mounting screws on the lower access panel.Then remove the lower access panel.
4. Remove the large front panel and remove the sensingbulb from suction manifold. TO PREVENT DAMAGETO SENSING BULB, ENSURE BULB IS NOT NEARFLAME OR IN CONTACT WITH SUCTION LINE ORMANIFOLD DURING BRAZING.
5. Use a tube cutter to remove the spin closure on thesuction line.
Excessive torque can cause orifices to stick. Use the proper torque settings when tightening orifices.
6. Replace sensing bulb to horizontal portion of suctionline just inside cabinet. Place bulb parallel with suctionline between 10 o’clock and 2 o’clock position. Securebulb to line with strapping provided in literature enve-lope. Insulate sensing bulb to line with self-adhesiveinsulation provided in the envelope. See the followingfigures for correct bulb placement and strapping infor-mation.
REFRIGERANT BULBMUST BE POSITIONEDBETWEEN 10 & 2 O’CLOCK
REFRIGERANT BULBMUST BE POSITIONEDBETWEEN 10 & 2 O’CLOCK
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.
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7. Replace access panels, suction line grommet, insula-tion and all screws.
RUBBERGROMMET
SUCTION LINEWITH SPIN CLOSURE
Suction Line Grommet
AIRFLOW CONVERSIONS
DOWNFLOW CONVERSIONConversion to downflow MUST be performed in an area thatallows access to all sides prior to placing the air handler inits final location. To prevent the evaporator coil pan from“sweating”, a drain pan insulation (DPI) accessory kit is tobe used when performing this conversion. NOTE: The DPIkit is not supplied with this product and is to be purchasedseparately. See the following Drain Pan Insulation Kit tablefor the correct DPI kit.
AVPTC Model Insulation Kit
1830 DPI36-42/20
31374260 DPI48-61/-20
Drain Pan Insulation KitsRefer to Figures Downflow Conversion - Conversion Prepa-ration, Downflow Conversion - Insulation Retainers, andDownflow Conversion - Conversion Completion for the lo-cation of the components referenced in the following steps.Figure Downflow Conversion - Conversion Preparation il-lustrates the new installation location for the removed com-ponents.
1. Before inverting the air handler, remove all access pan-els, the coil rear channel bracket, and the filter close-off panel.
2. Remove the evaporator coil and the horizontal drainpan. Discard horizontal drain pan.
3. Install the provided plastic plug into the vacated ac-cess panel.
4. Remove the two (2) zee coil support brackets and in-sulation retaining brackets.
5. Remove the tie bracket.
6. Install the DPI Insulation Kit onto the bottom of the drainpan.
NOTE: The filter provision is not applicablein THIS downflow application.
ACCESSPANEL
RETURN AIR SIDEOF UNIT
REAR CHANNELBRACKET
ZEE COILSUPPORT BRACKET
COIL RETAININGBRACKET
TIE BRACKET
Downflow Conversion - Conversion Preparation
7. Install the zee coil supports and the wrapper stiffeners.
8. Install the tie bracket.
9. Install the rear channel bracket.
10. To prevent possible condensate “blow off” the insula-tion retainers are to be laid into the evaporator coil panas shown.
3” FLAT INSULATIONRETAINER (BOTH SIDES)
Downflow Conversion - Insulation RetainersTo complete the conversion, slide the evaporator coil intothe chassis and attach the three (3) access panels.
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WRAPPER
INSULATIONJACKET
ZEE COILSUPPORT
WRAPPERSTIFFENER
DRAIN PANINSULATION KIT
BLOWERASSEMBLY
Downflow Conversion - Conversion CompletionNOTE: When converted to downflow position the coil mayprotrude above the cabinet on some models.
HORIZONTAL CONVERSIONDedicated Downflow models are not suitable for horizontalapplication and must not be used for this type of installation.The only field modification required for conversion to “Hori-zontal Right-Hand” is the removal of the plastic knockouts inthe horizontal panel drain connections. To prevent the hori-zontal drain pan from sweating in high humidity applications,it is recommended that a horizontal drain pan insulation(DPIH) accessory kit be used. NOTE: The DPIH insulationkit is not supplied with this product and should be purchasedseparately. See Horizontal Drain Pan Insulation Kits tablefor the correct DPIH kit.
AVPTC Model Insulation Kit
1830 DPIH36-42
31374260 DPIH48-61
Horizontal Drain Pan Insulation KitsThe following describes converting to “Horizontal Left-Hand”.Conversion to downflow MUST be performed in an area thatallows access to all sides prior to placing the air handler inits final location. See Horizontal Left-Hand Conversion fig-ure below.
Horizontal Left-Hand Conversion
1. Remove two screws beside the liquid line on the loweraccess panels. Remove the (3) air handler access pan-els.
2. Remove the “J” shaped bracket that retains the evapo-rator coil.
3. Slide out the evaporator coil and horizontal drain pan.
4. Remove the gasket from the horizontal pan drain con-nections.
5. Remove the oval shaped plastic plug from the left sideaccess panel. Remove the oval shaped rubber gasketseal from the lower right side access panel.
6. The drain connections for the horizontal pan are sealedwith a thin coating of plastic. Carefully knock out thisplastic seal with a screwdriver and hammer. Note: Theupper drain will become the secondary drain whichis mandatory in many municipalities .
7. Install the plastic plug removed in step 5 to the rightside lower access panel and the oval shaped rubbergasket to the lower left access panel.
8. Reinstall the evaporator coil with the horizontal panelon the left side. Note: Push the assembly completelyto the rear to ensure the engagement of the upflow panwith the rear channel bracket.
9. Install the “J” bracket (removed in step 2) to supportthe upflow pan to the tie channel.
10. Attach all panels and the metering device.
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, loosenmotor mount and rotate motor as shown in the AVPTC Mo-tor Orientation figure below. Be sure motor is oriented withthe female connections on the casing down. If the motor isnot oriented with the connections down, water could collectin the motor and may cause premature failure.
10
FEMALE CONNECTIONS
SIDE VIEW
WAR
NINGSO
FTW
ARE VER.
TOP
FRONT VIEW
AVPTC Motor Orientation
CONDENSATE REMOVAL
The coil drain pan has a primary and an optional secondarydrain with 3/4" NPT female connections. The connectors re-quired can be 3/4" NPT male either PVC or metal pipe andshould be hand tightened to a torque of approximately 37 in-lbs. to prevent damage to the drain pan connection. An in-sertion depth between .355 to .485 inches (3-5 turns) shouldbe expected at this torque. Use the female (3/4 fpt) threadedfitting that protrudes outside of the enclosure for externalconnections.
1. Ensure drain pan hole is NOT obstructed.
2. To prevent potential sweating and dripping on to fin-ished space, it may be necessary to insulate the con-densate drain line located inside the building. UseArmaflex® or similar material.
A Secondary Condensate Drain Connection has been pro-vided for areas where the building codes require it. Pitch thedrain line 1/4" per foot to provide free drainage. Insulate drainlines located inside the building to prevent sweating. Installa condensate trap to ensure proper drainage. If the second-ary drain line is required, run the line separately from theprimary drain and end it where it can be easily seen.NOTE: Water coming from this line means the coil primarydrain is plugged and needs clearing.
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 Conden-sate Drain Trap figure for 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 tothe requirements listed in the Uniform Mechanical BuildingCode.A drain trap in a draw-through application prevents air frombeing drawn back through the drain line during fan opera-tion thus preventing condensate from draining, and if con-nected to a sewer line to prevent sewer gases from beingdrawn into the 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 ofdrain but we also do not recommend it due to the resultingair leakage. Regardless of the condensate drain design used,it is the installer’s responsibility to ensure the condensatedrain system is of sufficient design to ensure proper con-densate removal from the coil drain pan.
Air Handler
3" MIN.POSITIVE LIQUIDSEAL REQUIRED
AT TRAP
DrainConnection
2" MIN.
Condensate Drain Trap
Use 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 coated with oilsthat 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.When coils are installed above ceilings, or in other locationswhere damage from condensate overflow may occur, it isMANDATORY to install a field fabricated auxiliary drain panunder the coil cabinet enclosure. Drain lines from the auxil-iary pan must be installed and terminated so that the home-owner can see water discharges.
ACHIEVING 2% LOW LEAKAGE RATE
Ensure that the Neoprene gasket with PSA remains intacton all surfaces that the access panels are secured to. Thesesurfaces are the entire length of the wrapper and areas be-tween the upper tie plate, upper and lower access panels.Be sure that upper access panel breaker insert gasket isintact and also flowrator gasket is installed on the lower ac-cess panel. An additional drain hole cover is required.
CIRCULATOR BLOWER
This air handler is equipped with a multi-speed circulatorblower. This blower provides ease in adjusting blowerspeeds. The Specification Sheet applicable to your modelprovides an airflow table, showing the relationship betweenairflow (CFM) and external static pressure (E.S.P.), for theproper selection of heating and cooling speeds. The heat-ing blower speed is shipped set at “21 kW”, and the coolingblower speed is set at “D”. These blower speeds should be
11
adjusted by the installer to match the installation require-ments so as to provide the correct electric heating CFM andcorrect cooling CFM.Use the CFM LED (green), adjacent to the integrated con-trol module electric heat connector to obtain an approximateairflow quantity. The green CFM LED blinks once for each100 CFM of 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 air flow for the cooling system.Most cooling systems are designed to work with air flowsbetween 350 and 450 CFM per ton. Most manufactur-ers recommend an air flow of about 400 CFM per ton.
Example: 2.5 tons X 400 CFM per ton = 1000 CFMThe cooling system manufacturer’s instructions must bechecked for required air flow. 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 air flow charts in the Specification Sheet appli-cable to your model. Look up the cooling air flow de-termined in step 2 and find the required cooling speedand adjustment setting.
Example: An AVPTC183014 air handler installed witha 2.5 ton air conditioning system. The air flow neededis 1000 CFM. Looking at the cooling speed chart forAVPTC183014, find the air flow closest to 1000 CFM.A cooling airflow of 1000 CFM can be attained by set-ting the cooling speed to “C” and the adjustment to “0”(no adjustment).
4. Locate the blower speed selection DIP switches on theintegrated control module. Select the desired “cooling”speed tap by positioning switches 1 and 2 appropri-ately. Select the desired “adjust” tap by positioningswitches 3 and 4 appropriately. Refer to the followingDipswitches - Cooling Airflow and Airflow Adjust Tapsfigure for switch positions and their corresponding taps.Verify CFM by counting the number of times the greenCFM LED blinks.
5. Continuous fan speed is 30% of the air handler’s maxi-mum airflow capability.
Example: If the air handler’s maximum airflow capabil-ity is 2000 CFM, the continuous fan speed will be 0.30x 2000 CFM = 600 CFM.
S1
S2
S1
S2
S1
S2
S1
S2
OFF OFF OFF OFFON ON ON ON
Tap A Tap B
Cooling Air flow Speed Tap (*indicates factory setting)
Tap C Tap D*
S3
S4
Normal* +10%
Air flow Adjust Taps (*indicates factory setting)
-10% Normal
OFF OFF OFF OFFON ON ON ON
S3
S4
S3
S4
S3
S4
Dipswitches - Cooling Airflow and Airflow Adjust Taps
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 for switch po-sitions and their corresponding taps. Refer to the bulletpoints below for a description of each ramping profile.Verify profile selection by counting the green CFM LEDblinks and timing each step of the ramping profile.
• 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 byfirst stepping up to 50% of the full demand for 30 sec-onds. The motor then ramps to 100% of the requiredairflow. A one (1) minute OFF delay at 100% of thecooling airflow.
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
12
• 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*
Dipswitches - Cooling Airflow Ramping Profiles
7. If an electric heater kit has been installed, determinethe heater kilowatt (kW) rating. Find the heater size inthe table below. Set dip switches 9, 10, and 11 for theinstalled heater as shown in the Dipswitches - ElectricHeat Airflow figure below. The adjust setting (alreadyestablished by the cooling speed selection) also ap-plies to the electric heater kit airflow. Thus, the electricheater airflow is adjusted by the same amount. Verifyselected CFM by counting the green CFM LED blinks.
ELECTRIC HEAT TEMPERATURE RISE:The heating mode temperature rise is dependent upon thesystem airflow, the supply voltage, and the heat kit size (kW)selected. Use the supply voltage/temperature rise tablesbelow to determine the temperature rise (ºF).
3 5 6 8 10 15 20 21600 18 28 35 41800 13 21 26 31 421000 11 17 21 25 34 501200 9 14 18 21 28 42 56 621400 8 12 15 18 24 36 48 531600 7 10 13 15 21 31 42 461800 6 9 12 14 19 28 37 412000 5 8 11 12 17 25 34 37
HEAT KIT NOMINAL kWCFM
230/1/60 Supply Voltage - Temperature Rise Table °F
3 5 6 8 10 15 20 21600 17 27 34 39800 13 20 25 30 401000 10 16 20 24 32 481200 8 13 17 20 27 40 53 591400 7 11 14 17 23 34 46 511600 6 10 13 15 20 30 40 441800 6 9 11 13 18 27 36 392000 5 8 10 12 16 24 32 35
CFM HEAT KIT NOMINAL kW
220/1/60 Supply Voltage - Temperature Rise Table °F
3 5 6 8 10 15 20 21600 16 25 32 37800 12 19 24 38 38
1000 10 15 19 22 30 461200 8 13 16 19 25 38 51 561400 7 11 14 16 22 33 43 481600 6 9 12 14 19 28 38 421800 5 8 11 12 17 25 34 372000 5 8 10 11 15 23 30 34
CFM HEAT KIT NOMINAL kW
208/1/60 Supply Voltage - Temperature Rise Table °F
S9
S10
OFF OFF OFF OFFON ON ON ON
21 kW* 20 kW
Electric Heating Air Flow (*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
NOTE: Upon start up in communicating mode the circuit board will display a “1 Flash” error code on the diagnostic LEDand an “Ec” HTR TO LARGE error at the communicating display. This is an indication that the dip switches on the controlboard need to be configured in accordance with the Electric Heating Airflow Table on the following page of this manual.Configuring the dip switches and resetting power to the unit will clear the error code.
13
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.
MODELS HKR-03* HKR-05*/-05C* HKR-06* HKR-08*/-08C* HKR-10*/-10C* HKR-15C HKR-20C HKR-21C
AVPTC183014A* X X X X1 X1 --- --- ---AVPTC313714A* X X X X1 X1 X2 --- ---AVPTC426014A* X X X X X X X3 X3
Heat Kit Selection
* Revision level that may or may not be designated.C Circuit breaker option.NOTE:When 8kW and 10kW heat kits are used with an AVPTC1830 and AVPTC3137, matched with 2- ton outdoor unit, see Note 1 below.1 Set Heater Kit dip switches 9, 10 and 11 to 6kW setting (9-ON, 10-OFF,11-ON) to obtain 840 CFM.2 This heater kit can only be used for ‘1000 CFM or higher’ applications.3 This heater kit can only be used for ‘1200 CFM or higher’ applications.
NOTE: Airflow blink codes are approximations of actual airflow.
Profiles 5 6A OFF OFFB ON OFFC OFF OND ON ON30 sec/50% 7.5 mins/82% 30 sec/50%
------- 30 sec/50% 60 sec/100%------- 7.5 mins/82% 60 sec/100%
ProfileSelectionSwitches
Pre-Run Short-Run Off Delay------- ------- 60 sec/100%
Tap 1 2 TRIM 3 4A OFF OFF 0% OFF OFFB ON OFF + 10% ON OFFC OFF ON - 10% OFF OND ON ON 0% ON ON
AdjustSelectionSwitches
CoolSelectionSwitches
Speed Selection Dip Switches
TO SET AIRFLOW:1.Select appropriate model from Cooling/Heat Pump Airflow Table. Based on desired Airflow for your application select corresponding tap (A,B,C or D). Set dip switches 1 & 2 to the appropriate ON/OFF positions.2. Select appropriate Airflow adjustment factor for application (0%. +10%, -10%). Set dip switches 3 & 4 to the appropriate ON/OFF positions.3. If installed with Heater Kit: Using Electric Heat Airflow Table, set dip switches 9, 10 and 11 to the appropriate ON/OFF positions based on Heater kit installed. If installed without Heater Kit: Ensure dip switches 9, 10 and 11 are set to a valid heater kit selection. Example: The only valid heater kits for AVPTC183014* applications are 3, 5, 6, 8 and 10 kW. Failure to do so will result in a Heater Kit error code.
TO SET COMFORT MODE:Select desired Comfort Mode profile (see profiles above). Set switches5 and 6 to the appropriate ON/OFF positions.
TapLow
StageCool
High StageCool
A 420 630B 560 840C 700 1040A 410 610B 560 830C 700 1040D 830 1240A 810 1210B 940 1410C 1050 1560D 1210 1800
Htr kW 9 10 11 AVPTC183014*
AVPTC313714*
AVPTC426014*
3 ON ON ON 630 610 6005 ON ON OFF 730 710 6806 ON OFF ON 840 840 7908 ON OFF OFF 1080 1060 99010 OFF ON ON 1270 1260 119015 OFF ON OFF NR 1470 139020 OFF OFF ON NR NR 158021 OFF OFF OFF NR NR 1580
NOTE: Airflow data shown applies to the emergency heat mode (electric heat only) in either non-communicating mode operation or fully communicating mode operation.
Cooling/Heat Pump Airflow Table
Electr ic Heat Airflow Table
NOTE: Airflow data shown applies to non-communicating 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.
Model
AVPTC183014*
AVPTC313714*
AVPTC426014*
14
TROUBLESHOOTING
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
NOTE: Discharge body’s 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 theperson at the same electrostatic potential, these steps willhelp avoid exposing the integrated control module to elec-trostatic discharge. This procedure is applicable to both in-stalled and uninstalled (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 body’s electrostaticcharge to ground.
2. Firmly touch a clean, unpainted, metal surface of themodular blower near the control. Any tools held in aperson’s 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 un-grounded object, repeat step 2 before touching controlor 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 red diagnostic LED blinks to assist in trouble-shooting the unit. The number of blinks refers to a specificfault code.
FAULT RECALLThe integrated control module is equipped with a momen-tary push-button switch that can be used to display the lastsix faults on the red diagnostic LED. 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 displaythe six most recent faults beginning with the most recentfault and decrementing to the least recent fault. The faultsmay be cleared by depressing the button for greater thanfive seconds.
NOTE: Consecutively repeated faults are displayed amaximum of three times. Example: A clogged return air filtercauses the air handler’s 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*AA thermostat. Any other system con-figurations are considered invalid ComfortNet systems andmust be connected as a traditional (or non-communicating)system (see Electrical).
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 ther-mostat comprising a ComfortNet system “communicate” digi-tally with one another. It is now a two-way communicationspath. The thermostat still sends commands to the indoorand outdoor units. However, the thermostat may also re-quest and receive information from both the indoor and out-door units. This information may be displayed on theComfortNet thermostat. The indoor and outdoor units alsointeract with one another. The outdoor unit may send com-mands to or request information from the indoor unit. Thistwo-way digital communications between the thermostat andsubsystems (indoor/outdoor unit) and between subsystemsis the key to unlocking the benefits and features of theComfortNet system.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.
15
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 systemairflow demand. If the indoor unit is responsible for deter-mining the airflow demand, it calculates the demand andsends it to the ECM motor. If the outdoor unit or thermostatis responsible for determining the demand, it calculates thedemand and transmits the demand along with a fan requestto the indoor unit. The indoor unit then sends the demandto the ECM motor. The table below lists the variousComfortNet systems, the operating mode, and airflow de-mand 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 system’s low stage coolingairflow demand. The heat pump will then send a fanrequest along with the low stage cooling airflow demandto the air handler. Once received, the air handler will sendthe low stage cooling airflow demand to the ECM motor.The ECM motor then delivers the low stage coolingairflow. See the applicable ComfortNet air conditioner orheat pump installation manual for the airflow deliveredduring cooling or heat pump heating.
In continuous fan mode, the CTK0*AA thermostat providesthe airflow demand. The thermostat may be configured for alow, medium, or high continuous fan speed. The low, medium,and high fan speeds correspond to 25%, 50% and 75%,respectively, of the air handlers’ maximum airflow capability.During continuous fan operation, the thermostat sends a fanrequest along with the continuous fan demand to the airhandler. The air handler, in turn, sends the demand to theECM motor. The ECM motor delivers the requestedcontinuous fan airflow.
CTK0*AA WIRING
NOTE: 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, andreplaced. It is strongly recommended that multiple wiresinto a single terminal be twisted together prior to insertinginto the plug connector. Failure to do so may result inintermittent 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 WIRING
Typical 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*AAThermostat
ComfortNet™ CompatibleAir HandlerIntegrated Control Module
ComfortNet Compatible AC/HPIntegrated Control Module
1 2 R C
System Wiring Using Four-Wires
TWO-WIRE OUTDOOR, FOUR-WIRE INDOOR WIRING
Two wires only may be utilized between the indoor and out-door units. For this wiring scheme, only the data lines, 1and 2, 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 outdoorunit’s electronic control. The transformer is included withthe CTK0*AA kit. See kit instructions for mounting and wir-ing instructions. Four wires are required between the indoorunit and thermostat.
16
1 2 R C
1 2 R C
CTK0*AAThermostat
ComfortNetAir Handler IntegratedControl Module
Compatible
ComfortNetAC/HP IntegratedControl Module
Compatible
Optional40VA Transformer
(included in CTK0*AA kit)
208/230 VAC 24 VAC
1 2 R C
System Wiring using Two-Wires between Air Handler andAC/HP and Four-Wires between Air Handler and Thermostat
COMFORTNET™ SYSTEM ADVANCED FEATURESRefer to the communicating thermostat installation manualfor information on accessing advanced features and menus.
DIAGNOSTICSAccessing the air handler’s 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 handler’s motor torepeatedly enter a limiting condition. The control will onlystore this fault the first three consecutive times the fault oc-curs. Navigate to the diagnostics menu as described abovein Accessing and Navigating the Advanced Features Menus.
NOTE: It is highly recommended that the fault history becleared when performing maintenance or servicing the airhandler.NETWORK TROUBLESHOOTINGNOTE: Indoor Unit BIAS and TERMINATION Dipswitchesare factory set and should not be changed.
S1 S2
ON
OFF
S3
BIA
S
BIA
S
TER
M
Dipswitches - Indoor Unit BIAS and TERMINATION
The ComfortNet system is a fully communicating system,and thus, constitutes a network. Occasionally the need totroubleshoot the network may arise. The integrated air han-dler control has some on-board tools that may be used totroubleshoot the network. These tools are: red communica-tions LED, green receive (Rx) LED, and learn button. Referto the Communications Troubleshooting Chart at the end ofthis manual for error codes, possible causes and correctiveactions
• Red communications LED – Indicates the status ofthe network. The table below indicates the LED sta-tus and the 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.
START-UP PROCEDURE
• Prior to start-up, ensure that all electrical connectionsare properly sized and tightened.
• All panels must be in place and secured. For Air Tightapplication, neoprene gasket must be positioned atprescribed 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.
17
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 theuser is the circulating air filter(s). Filter should be cleaned orreplaced regularly. A certified service technician must per-form all 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 ELEC-TRONIC COMPONENTS WHICH REQUIRE A DEFI-NITE GROUND. PROVISIONS ARE MADE FORCONNECTION OF THE GROUND. A DEDICATEDGROUND FROM THE MAIN POWER SUPPLY ORAN EARTH GROUND MUST BE PROVIDED.
18
AIR HANDLER ADVANCED FEATURES MENUS
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 electric heating airflow by the selected amount.
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
19
COMMUNICATIONS TROUBLESHOOTING CHART
LED LED Status
Indication Possible Causes Corrective Action(s) Notes & Cautions
Off Normal condition None None None
1 Flash Communications Failure
Communications Failure
Depress Learn Button
Verify that bus BIAS and TERM
dipswitches are in the ON position.
Depress once quickly for a power-up reset
Depress and hold for 2 seconds for an out-of-box reset
Red Communications
LED
2 Flashes Out-of-box reset Control power up
Learn button depressed
None None
Off No power
Communications
error
No power to air handler
Open fuse
Communications error
Check fuses and circuit breakers;
replace/reset
Replace blown fuse
Check for shorts in
low voltage wiring in air handler/system
Reset network by
depressing learn button
Check data 1/ data 2
voltages
Turn power OFF prior to repair
1 Steady
Flash No network found Broken/ disconnected
data wire(s)
Air handler is installed as a non-communicating/
traditional system
Check
communications wiring (data 1/ data 2 wires)
Check wire
connections at terminal block
Verify air handler
installation type (non-communicating/ traditional or
communicating)
Check data 1/ data 2 voltages
Turn power OFF
prior to repair
Verify wires at terminal blocks are securely twisted
together prior to inserting into terminal block
Verify data1 and data voltages as described above
Rapid Flashing
Normal network traffic
Control is “talking” on network as expected
None None
Green Receive LED
On Solid Data 1/ Data 2 miss-wire
Data 1 and data 2 wires reversed at air
handler, thermostat, or ComfortNet™ compatible outdoor AC/HP
Short between data 1 and data 2 wires
Short between data 1
or data 2 wires and R (24VAC) or C (24VAC common)
Check communications
wiring (data 1/ data 2 wires)
Check wire connections at
terminal block
Check data 1/ data 2 voltages
Turn power OFF prior to repair
Verify wires at terminal blocks are securely twisted together prior to
inserting into terminal block
Verify data1 and
data voltages as described above
20
TROUBLESHOOTING CHARTC
omfo
rtN
et ™
T
herm
osta
t O
nly
Sym
ptom
s of
Abn
orm
al O
pera
tion
(
Com
mun
icat
ing
& N
on-c
omm
unic
atin
g T
herm
osta
t)
Dia
gnos
tic/
Stat
us
LE
D C
odes
Fau
lt D
escr
ipti
on
Mes
sage
C
ode
Pos
sibl
e C
ause
s C
orre
ctiv
e A
ctio
ns
Not
es &
Cau
tion
s
L
ED
dis
play
is O
N c
ontin
uous
ly
ON
Nor
mal
ope
ratio
n N
one
Non
e
Nor
mal
ope
ratio
n
Non
e
Nor
mal
ope
ratio
n
Ele
ctri
c he
ater
s fa
il to
ene
rgiz
e on
a c
all f
or
W1
or A
uxili
ary/
Em
erge
ncy
heat
Inte
grat
ed c
ontr
ol m
odul
e L
ED
dis
play
pr
ovid
es th
e in
dica
ted
erro
r co
de.
C
omfo
rtN
et th
erm
osta
t “C
all f
or S
ervi
ce”
icon
illu
min
ated
Com
fort
Net
ther
mos
tat s
crol
ls “
Che
ck A
ir
Han
dler
” m
essa
ge
1 Fl
ash
H
eate
r ki
t sel
ecte
d vi
a di
psw
itche
s is
too
larg
e fo
r he
ater
kits
spe
cifi
ed
in s
hare
d da
ta s
et
HTR
TO
O
LAR
GE
E
c
Hea
ter
kit s
elec
ted
via
dips
witc
hes
is to
o la
rge
for
heat
er
kits
in s
hare
d da
ta s
et
V
erif
y el
ectr
ic h
eat d
ipsw
itch
setti
ngs
V
erif
y th
e in
stal
led
elec
tric
he
ater
is v
alid
for
the
air
hand
ler.
C
heck
nam
epla
te o
r Sp
ecif
icat
ion
Shee
t app
licab
le to
yo
ur m
odel
* fo
r al
low
able
hea
ter
kit(
s).
V
erif
y sh
ared
dat
a se
t is
corr
ect
for
the
spec
ific
mod
el.
Re-
popu
late
dat
a us
ing
corr
ect
mem
ory
card
if r
equi
red.
T
urn
pow
er O
FF p
rior
to r
epai
r.
U
se m
emor
y ca
rd f
or th
e sp
ecif
ic
mod
el.
In
sert
mem
ory
card
BE
FOR
E
turn
ing
pow
er O
N.
Mem
ory
card
m
ay b
e re
mov
ed a
fter
dat
a is
lo
aded
.
Tur
n po
wer
OFF
bef
ore
rem
ovin
g m
emor
y ca
rd.
E
rror
cod
e w
ill b
e cl
eare
d on
ce
data
is lo
aded
.
E
lect
ric
heat
air
flow
is h
ighe
r th
an
expe
cted
on
a ca
ll fo
r W
1 or
A
uxili
ary/
Em
erge
ncy
heat
Inte
grat
ed c
ontr
ol m
odul
e L
ED
dis
play
pr
ovid
es th
e in
dica
ted
erro
r co
de.
1 Fl
ash
H
eate
r ki
t sel
ecte
d vi
a di
psw
itche
s is
too
smal
l fo
r he
ater
kits
spe
cifi
ed
in s
hare
d da
ta s
et
HTR
TO
O
SMA
LL
Ec
H
eate
r ki
t sel
ecte
d vi
a di
psw
itche
s is
too
smal
l for
hea
ter
kits
in s
hare
d da
ta s
et
V
erif
y el
ectr
ic h
eat d
ipsw
itch
setti
ngs
V
erif
y th
e in
stal
led
elec
tric
he
ater
is v
alid
for
the
air
hand
ler.
C
heck
nam
epla
te o
r Sp
ecif
icat
ion
Shee
t app
licab
le to
yo
ur m
odel
* fo
r al
low
able
hea
ter
kit(
s).
V
erif
y sh
ared
dat
a se
t is
corr
ect
for
the
spec
ific
mod
el.
Re-
popu
late
dat
a us
ing
corr
ect
mem
ory
card
if r
equi
red.
T
urn
pow
er O
FF p
rior
to r
epai
r.
U
se m
emor
y ca
rd f
or th
e sp
ecif
ic
mod
el.
In
sert
mem
ory
card
BE
FOR
E
turn
ing
pow
er O
N.
Mem
ory
card
m
ay b
e re
mov
ed a
fter
dat
a is
lo
aded
.
Tur
n po
wer
OFF
bef
ore
rem
ovin
g m
emor
y ca
rd.
E
rror
cod
e w
ill b
e cl
eare
d on
ce
data
is lo
aded
.
Ele
ctri
c he
at a
irfl
ow is
hig
her
than
ex
pect
ed o
n a
call
for
W1
or
Aux
iliar
y/E
mer
genc
y he
at
In
tegr
ated
con
trol
mod
ule
LE
D d
ispl
ay
prov
ides
the
indi
cate
d er
ror
code
.
1 Fl
ash
H
eate
r ki
t sel
ecte
d vi
a di
psw
itche
s do
es n
ot
heat
er k
its s
peci
fied
in
shar
ed d
ata
set
NO
HTR
M
ATC
H
Ec
H
eate
r ki
t sel
ecte
d vi
a di
psw
itche
s is
doe
sn’t
mat
ch
heat
er k
its in
sha
red
data
set
V
erif
y el
ectr
ic h
eat d
ipsw
itch
setti
ngs
V
erif
y th
e in
stal
led
elec
tric
he
ater
is v
alid
for
the
air
hand
ler.
C
heck
nam
epla
te o
r Sp
ecif
icat
ion
Shee
t app
licab
le to
yo
ur m
odel
* fo
r al
low
able
hea
ter
kit(
s).
V
erif
y sh
ared
dat
a se
t is
corr
ect
for
the
spec
ific
mod
el.
Re-
popu
late
dat
a us
ing
corr
ect
mem
ory
card
if r
equi
red.
T
urn
pow
er O
FF p
rior
to r
epai
r.
U
se m
emor
y ca
rd f
or th
e sp
ecif
ic
mod
el.
In
sert
mem
ory
card
BE
FOR
E
turn
ing
pow
er O
N.
Mem
ory
card
m
ay b
e re
mov
ed a
fter
dat
a is
lo
aded
.
Tur
n po
wer
OFF
bef
ore
rem
ovin
g m
emor
y ca
rd.
E
rror
cod
e w
ill b
e cl
eare
d on
ce
data
is lo
aded
.
N
o ai
r ha
ndle
r op
erat
ion.
Inte
grat
ed c
ontr
ol m
odul
e L
ED
dis
play
pr
ovid
es th
e in
dica
ted
erro
r co
de.
C
omfo
rtN
et th
erm
osta
t dis
play
s “B
atte
ry
Pow
er”
5 Fl
ashe
s
Ope
n Fu
se
Not
D
ispl
ayed
Not
D
ispl
ayed
Shor
t in
low
vol
tage
wir
ing
L
ocat
e an
d co
rrec
t sho
rt in
low
vo
ltage
wir
ing
T
urn
pow
er O
FF p
rior
to r
epai
r.
R
epla
ce f
use
with
3-a
mp
auto
mot
ive
type
A
ir h
andl
er f
ails
to o
pera
te
In
tegr
ated
con
trol
mod
ule
LE
D d
ispl
ay
prov
ides
no
sign
al.
C
omfo
rtN
et th
erm
osta
t “C
all f
or S
ervi
ce”
icon
illu
min
ated
Com
fort
Net
ther
mos
tat s
crol
ls “
Che
ck A
ir
Han
dler
” m
essa
ge
Non
e
No
208/
230
volt
pow
er
to a
ir h
andl
er o
r no
24
volt
pow
er to
inte
grat
ed
cont
rol m
odul
e
Blo
wn
fuse
or
circ
uit
brea
ker
In
tegr
ated
con
trol
m
odul
e ha
s an
inte
rnal
fa
ult.
INTE
RN
AL
FA
ULT
E
E
M
anua
l dis
conn
ect s
wit
ch O
FF o
r 24
vol
t wir
e im
prop
erly
co
nnec
ted
or lo
ose
B
low
n fu
se o
r ci
rcui
t bre
aker
Inte
grat
ed c
ontr
ol m
odul
e ha
s an
in
tern
al f
ault
A
ssur
e 20
8/23
0 vo
lt an
d 24
vol
t po
wer
to a
ir h
andl
er a
nd
inte
grat
ed c
ontr
ol m
odul
e.
C
heck
inte
grat
ed c
ontr
ol m
odul
e fu
se (
3A).
Rep
lace
if n
eces
sary
.
Che
ck f
or p
ossi
ble
shor
ts in
20
8/23
0 vo
lt an
d 24
vol
t cir
cuits
. R
epai
r as
nec
essa
ry.
R
epla
ce b
ad in
tegr
ated
con
trol
m
odul
e.
T
urn
pow
er O
FF p
rior
to r
epai
r.
R
epla
ce in
tegr
ated
con
trol
m
odul
e fu
se w
ith 3
A a
utom
otiv
e fu
se.
R
epla
ce in
tegr
ated
con
trol
m
odul
e w
ith c
orre
ct r
epla
cem
ent
part
Rea
d pr
ecau
tions
in “
Ele
ctro
stat
ic
Dis
char
ge”
sect
ion
of m
anua
l.
21
TROUBLESHOOTING CHARTC
omfo
rtN
et ™
T
herm
osta
t O
nly
Sym
ptom
s of
Abn
orm
al O
pera
tion
(
Com
mun
icat
ing
& N
on-c
omm
unic
atin
g T
herm
osta
t)
Dia
gnos
tic/
Stat
us
LE
D C
odes
Fau
lt D
escr
ipti
on
Mes
sage
C
ode
Pos
sibl
e C
ause
s C
orre
ctiv
e A
ctio
ns
Not
es &
Cau
tion
s
A
ir h
andl
er f
ails
to o
pera
te.
In
tegr
ated
con
trol
mod
ule
LE
D d
ispl
ay
prov
ides
indi
cate
d er
ror
code
.
Com
fort
Net
ther
mos
tat “
Cal
l for
Ser
vice
” ic
on il
lum
inat
ed.
C
omfo
rtN
et th
erm
osta
t scr
olls
“C
heck
Air
H
andl
er”
mes
sage
.
9 Fl
ashe
s
Dat
a no
t yet
on
netw
ork.
N
O N
ET
DA
TA
d0
A
ir h
andl
er d
oes
not c
onta
in a
ny
shar
ed d
ata.
Popu
late
sha
red
data
set
usi
ng
mem
ory
card
.
Tur
n po
wer
OFF
pri
or to
re
pair
Use
mem
ory
card
for
the
spec
ific
mod
el.
In
sert
mem
ory
card
B
EFO
RE
turn
ing
pow
er
ON
. M
emor
y ca
rd m
ay b
e re
mov
ed a
fter
dat
a is
lo
aded
.
Tur
n po
wer
OFF
bef
ore
rem
ovin
g m
emor
y ca
rd.
E
rror
cod
e w
ill b
e cl
eare
d on
ce d
ata
is lo
aded
.
Ope
ratio
n di
ffer
ent t
han
expe
cted
or
no
oper
atio
n.
In
tegr
ated
con
trol
mod
ule
LE
D d
ispl
ay
prov
ides
indi
cate
d er
ror
code
.
Com
fort
Net
ther
mos
tat “
Cal
l for
Ser
vice
” ic
on il
lum
inat
ed.
C
omfo
rtN
et th
erm
osta
t scr
olls
“C
heck
Air
H
andl
er”
mes
sage
.
11 F
lash
es
In
valid
mem
ory
card
da
ta.
INV
ALI
D
MC
DA
TA
d4
Sh
ared
dat
a se
t on
mem
ory
card
ha
s be
en r
ejec
ted
by in
tegr
ated
co
ntro
l mod
ule
V
erif
y sh
ared
dat
a se
t is
corr
ect
for
the
spec
ific
mod
el.
Re-
popu
late
dat
a us
ing
corr
ect
mem
ory
card
if r
equi
red.
T
urn
pow
er O
FF p
rior
to
repa
ir
U
se m
emor
y ca
rd f
or th
e sp
ecif
ic m
odel
.
Inse
rt m
emor
y ca
rd
BE
FOR
E tu
rnin
g po
wer
O
N.
Mem
ory
card
may
be
rem
oved
aft
er d
ata
is
load
ed.
T
urn
pow
er O
FF b
efor
e re
mov
ing
mem
ory
card
.
Err
or c
ode
will
be
clea
red
once
dat
a is
load
ed.
22
TROUBLESHOOTING CHARTC
omfo
rtN
et ™
T
herm
osta
t O
nly
Sym
ptom
s of
Abn
orm
al O
pera
tion
(
Com
mun
icat
ing
& N
on-c
omm
unic
atin
g T
herm
osta
t)
Dia
gnos
tic/
Stat
us
LE
D C
odes
Fau
lt D
escr
ipti
on
Mes
sage
C
ode
Pos
sibl
e C
ause
s C
orre
ctiv
e A
ctio
ns
Not
es &
Cau
tion
s
A
ir h
andl
er f
ails
to o
pera
te.
In
tegr
ated
con
trol
mod
ule
LE
D d
ispl
ay
prov
ides
indi
cate
d er
ror
code
.
Com
fort
Net
ther
mos
tat “
Cal
l for
Ser
vice
” ic
on il
lum
inat
ed.
C
omfo
rtN
et th
erm
osta
t scr
olls
“C
heck
Air
H
andl
er”
mes
sage
.
6 Fl
ashe
s
Cir
cula
tor
blow
er m
otor
is
not
run
ning
whe
n it
shou
ld b
e ru
nnin
g.
MO
TOR
N
OT
RU
N
b0
L
oose
wir
ing
conn
ectio
n at
ci
rcul
ator
mot
or p
ower
lead
s or
ci
rcul
ator
mot
or p
ower
lead
s di
scon
nect
ed.
Fa
iled
circ
ulat
or b
low
er m
otor
.
T
ight
en o
r co
rrec
t wir
ing
conn
ectio
n.
C
heck
cir
cula
tor
blow
er m
otor
. R
epla
ce if
nec
essa
ry.
T
urn
pow
er O
FF p
rior
to
repa
ir
R
epla
ce c
ircu
lato
r m
otor
w
ith c
orre
ct r
epla
cem
ent
part
.
A
ir h
andl
er f
ails
to o
pera
te.
In
tegr
ated
con
trol
mod
ule
LE
D d
ispl
ay
prov
ides
indi
cate
d er
ror
code
.
Com
fort
Net
ther
mos
tat “
Cal
l for
Ser
vice
” ic
on il
lum
inat
ed.
C
omfo
rtN
et th
erm
osta
t scr
olls
“C
heck
Air
H
andl
er”
mes
sage
.
6 Fl
ashe
s
Inte
grat
ed c
ontr
ol
mod
ule
has
lost
co
mm
unic
atio
ns w
ith
circ
ulat
or b
low
er m
otor
.
MO
TOR
C
OM
M
b1
L
oose
wir
ing
conn
ectio
n at
ci
rcul
ator
mot
or c
ontr
ol le
ads.
Faile
d ci
rcul
ator
blo
wer
mot
or.
Fa
iled
inte
grat
ed c
ontr
ol m
odul
e.
T
ight
en o
r co
rrec
t wir
ing
conn
ectio
n.
C
heck
cir
cula
tor
blow
er m
otor
. R
epla
ce if
nec
essa
ry.
C
heck
inte
grat
ed c
ontr
ol m
odul
e.
Rep
lace
if n
eces
sary
.
T
urn
pow
er O
FF p
rior
to
repa
ir
R
epla
ce c
ircu
lato
r m
otor
w
ith c
orre
ct r
epla
cem
ent
part
.
Rep
lace
inte
grat
ed c
ontr
ol
mod
ule
with
cor
rect
re
plac
emen
t par
t.
Air
han
dler
fai
ls to
ope
rate
.
Inte
grat
ed c
ontr
ol m
odul
e L
ED
dis
play
pr
ovid
es in
dica
ted
erro
r co
de.
C
omfo
rtN
et th
erm
osta
t “C
all f
or S
ervi
ce”
icon
illu
min
ated
.
Com
fort
Net
ther
mos
tat s
crol
ls “
Che
ck A
ir
Han
dler
” m
essa
ge.
6 Fl
ashe
s
Cir
cula
tor
blow
er m
otor
ho
rse
pow
er in
sha
red
data
set
doe
s no
t mat
ch
circ
ulat
or b
low
er m
otor
ho
rse
pow
er.
MO
TOR
M
ISM
ATC
H
b2
In
corr
ect c
ircu
lato
r bl
ower
mot
or
in a
ir h
andl
er.
In
corr
ect s
hare
d da
ta s
et in
in
tegr
ated
con
trol
mod
ule.
V
erif
y ci
rcul
ator
blo
wer
mot
or
hors
e po
wer
is th
e sa
me
spec
ifie
d fo
r th
e sp
ecif
ic a
ir
hand
ler
mod
el.
Rep
lace
is
nece
ssar
y.
V
erif
y sh
ared
dat
a se
t is
corr
ect
for
the
spec
ific
mod
el.
Re-
popu
late
dat
a us
ing
corr
ect
mem
ory
card
if r
equi
red.
T
urn
pow
er O
FF p
rior
to
repa
ir
R
epla
ce m
otor
with
cor
rect
re
plac
emen
t par
t.
Use
mem
ory
card
for
the
spec
ific
mod
el
In
sert
mem
ory
card
B
EFO
RE
turn
ing
pow
er
ON
. M
emor
y ca
rd m
ay b
e re
mov
ed a
fter
dat
a is
lo
aded
.
Tur
n po
wer
OFF
bef
ore
rem
ovin
g m
emor
y ca
rd.
E
rror
cod
e w
ill b
e cl
eare
d on
ce s
hare
d da
ta a
nd
mot
or h
orse
pow
er m
atch
.
Air
han
dler
ope
rate
s at
red
uced
pe
rfor
man
ce.
A
irfl
ow d
eliv
ered
is le
ss th
an e
xpec
ted.
Inte
grat
ed c
ontr
ol m
odul
e L
ED
dis
play
pr
ovid
es b3 e
rror
cod
e.
6 Fl
ashe
s
Cir
cula
tor
blow
er m
otor
is
ope
ratin
g in
a p
ower
, te
mpe
ratu
re, o
r sp
eed
lim
itin
g co
nditi
on.
MO
TOR
LI
MIT
S b3
Blo
cked
filt
ers.
Res
tric
tive
duct
wor
k.
U
nder
size
d du
ctw
ork.
Hig
h am
bien
t tem
pera
ture
s.
C
heck
filt
ers
for
bloc
kage
. C
lean
filt
ers
or r
emov
e ob
stru
ctio
n.
C
heck
duc
twor
k fo
r bl
ocka
ge.
Rem
ove
obst
ruct
ion.
Ver
ify
all
regi
ster
s ar
e fu
lly o
pen.
Ver
ify
duct
wor
k is
app
ropr
iate
ly
size
d fo
r sy
stem
. R
esiz
e/re
plac
e du
ctw
ork
if n
eces
sary
.
See
"Ins
tall
atio
n In
stru
ctio
ns"
for
inst
alla
tion
requ
irem
ents
.
T
urn
pow
er O
FF p
rior
to
repa
ir.
A
ir h
andl
er f
ails
to o
pera
te.
In
tegr
ated
con
trol
mod
ule
LE
D d
ispl
ay
prov
ides
indi
cate
d er
ror
code
.
Com
fort
Net
ther
mos
tat “
Cal
l for
Ser
vice
” ic
on il
lum
inat
ed.
C
omfo
rtN
et th
erm
osta
t scr
olls
“C
heck
Air
H
andl
er”
mes
sage
.
6 Fl
ashe
s
Cir
cula
tor
blow
er m
otor
se
nses
a lo
ss r
otor
co
ntro
l.
Cir
cula
tor
blow
er m
otor
se
nses
hig
h cu
rren
t.
MO
TOR
TR
IPS
b4
A
bnor
mal
mot
or lo
adin
g, s
udde
n ch
ange
in s
peed
or
torq
ue, s
udde
n bl
ocka
ge o
f ai
r ha
ndle
r/co
il ai
r in
let o
r ou
tlet.
H
igh
load
ing
cond
ition
s, b
lock
ed
filte
rs, v
ery
rest
rict
ive
duct
wor
k,
bloc
kage
of
air
hand
ler/
coil
air
inle
t or
outle
t.
C
heck
filt
ers,
filt
er
grill
s/re
gist
ers,
duc
t sys
tem
, and
ai
r ha
ndle
r/co
il ai
r in
let/o
utle
t for
bl
ocka
ges.
T
urn
pow
er O
FF p
rior
to
repa
ir.
23
TROUBLESHOOTING CHARTC
omfo
rtN
et ™
T
herm
osta
t O
nly
Sym
ptom
s of
Abn
orm
al O
pera
tion
(
Com
mun
icat
ing
& N
on-c
omm
unic
atin
g T
herm
osta
t)
Dia
gnos
tic/
Stat
us
LE
D C
odes
Fau
lt D
escr
ipti
on
Mes
sage
C
ode
Pos
sibl
e C
ause
s C
orre
ctiv
e A
ctio
ns
Not
es &
Cau
tion
s
A
ir h
andl
er f
ails
to o
pera
te.
In
tegr
ated
con
trol
mod
ule
LE
D d
ispl
ay
prov
ides
indi
cate
d er
ror
code
.
Com
fort
Net
™ th
erm
osta
t “C
all f
or
Serv
ice”
icon
illu
min
ated
.
Com
fort
Net
ther
mos
tat s
crol
ls “
Che
ck A
ir
Han
dler
” m
essa
ge.
6 Fl
ashe
s
Cir
cula
tor
blow
er m
otor
fa
ils to
sta
rt 1
0 co
nsec
utiv
e tim
es.
MTR
LC
KD
R
OTO
R
b5
O
bstr
uctio
n in
cir
cula
tor
blow
er
hous
ing.
Seiz
ed c
ircu
lato
r bl
ower
mot
or
bear
ings
.
Faile
d ci
rcul
ator
blo
wer
mot
or.
C
heck
cir
cula
tor
blow
er f
or
obst
ruct
ions
. R
emov
e an
d re
pair
/rep
lace
whe
el/m
otor
if
nece
ssar
y.
C
heck
cir
cula
tor
blow
er m
otor
sh
aft r
otat
ion
and
mot
or.
Rep
lace
mot
or if
nec
essa
ry.
T
urn
pow
er O
FF p
rior
to
repa
ir
R
epla
ce m
otor
with
cor
rect
re
plac
emen
t par
t.
Rep
lace
whe
el w
ith c
orre
ct
repl
acem
ent p
art.
A
ir h
andl
er f
ails
to o
pera
te.
In
tegr
ated
con
trol
mod
ule
LE
D d
ispl
ay
prov
ides
indi
cate
d er
ror
code
.
Com
fort
Net
ther
mos
tat “
Cal
l for
Ser
vice
” ic
on il
lum
inat
ed.
C
omfo
rtN
et th
erm
osta
t scr
olls
“C
heck
Air
H
andl
er”
mes
sage
.
6 Fl
ashe
s
Cir
cula
tor
blow
er m
otor
sh
uts
dow
n fo
r ov
er o
r un
der
volta
ge c
ondi
tion.
Cir
cula
tor
blow
er m
otor
sh
uts
dow
n du
e to
ove
r te
mpe
ratu
re c
ondi
tion
on
pow
er m
odul
e.
MO
TOR
V
OLT
S b6
Hig
h A
C li
ne v
olta
ge to
air
ha
ndle
r.
L
ow A
C li
ne v
olta
ge to
air
ha
ndle
r.
H
igh
ambi
ent t
empe
ratu
res.
C
heck
pow
er to
air
han
dler
. V
erif
y li
ne v
olta
ge to
blo
wer
is
with
in th
e ra
nge
spec
ifie
d on
the
air
hand
ler
ratin
g pl
ate.
See
"Ins
tall
atio
n In
stru
ctio
ns"
for
inst
alla
tion
requ
irem
ents
.
T
urn
pow
er O
FF p
rior
to
repa
ir.
A
ir h
andl
er f
ails
to o
pera
te.
In
tegr
ated
con
trol
mod
ule
LE
D d
ispl
ay
prov
ides
indi
cate
d er
ror
code
.
Com
fort
Net
ther
mos
tat “
Cal
l for
Ser
vice
” ic
on il
lum
inat
ed.
C
omfo
rtN
et th
erm
osta
t scr
olls
“C
heck
Air
H
andl
er”
mes
sage
.
6 Fl
ashe
s
Cir
cula
tor
blow
er m
otor
do
es n
ot h
ave
enou
gh
info
rmat
ion
to o
pera
te
prop
erly
.
M
otor
fai
ls to
sta
rt 4
0 co
nsec
utiv
e tim
es.
MO
TOR
P
AR
AM
S b7
Err
or w
ith in
tegr
ated
con
trol
m
odul
e.
M
otor
has
a lo
cked
rot
or
cond
ition
.
C
heck
inte
grat
ed c
ontr
ol m
odul
e.
Ver
ify
cont
rol i
s po
pula
ted
with
co
rrec
t sha
red
data
set
. Se
e da
ta
erro
rs a
bove
for
det
ails
.
Che
ck f
or lo
cked
rot
or c
ondi
tion
(see
err
or c
ode
abov
e fo
r de
tails
).
T
urn
pow
er O
FF p
rior
to
repa
ir.
R
epla
ce w
ith c
orre
ct
repl
acem
ent p
art(
s).
U
se m
emor
y ca
rd f
or th
e sp
ecif
ic m
odel
.
A
ir h
andl
er o
pera
tes
at r
educ
ed
perf
orm
ance
or
oper
ates
on
low
sta
ge
whe
n hi
gh s
tage
is e
xpec
ted.
Inte
grat
ed c
ontr
ol m
odul
e L
ED
dis
play
pr
ovid
es in
dica
ted
erro
r co
de.
6 Fl
ashe
s
Air
flow
is lo
wer
than
de
man
ded.
LO
W I
D
AIR
FLO
W
b9
B
lock
ed f
ilter
s.
R
estr
ictiv
e du
ctw
ork.
Und
ersi
zed
duct
wor
k.
C
heck
filt
ers
for
bloc
kage
. C
lean
filt
ers
or r
emov
e ob
stru
ctio
n.
C
heck
duc
twor
k fo
r bl
ocka
ge.
Rem
ove
obst
ruct
ion.
Ver
ify
all
regi
ster
s ar
e fu
lly o
pen.
Ver
ify
duct
wor
k is
app
ropr
iate
ly
size
d fo
r sy
stem
. R
esiz
e/re
plac
e du
ctw
ork
if n
eces
sary
.
T
urn
pow
er O
FF p
rior
to
repa
ir.
24Wiring is subject to change, always refer to the wiring diagram on the unit for the most up-to-date wiring.
HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING.MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SOMAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
WARNING
WIRING DIAGRAMS
RDBKGY
BL
AFHEA
T
RD
M4
FL
BL
COM
CIRCULATOR BLOWER
11
RD
3
BK
SEENOTE 5
BK
L2
RD
YL
8
BK
CIRCULATOR
CIRCULATOR
RD
RD
3
WH
TOMICRO
L1
R
RDRD
W2 (2)
AIR
5
BK
DIAGNOSTICLED
PL1
4
2
FL
SEENOTE
7
DEH
UM
TL
FOUR (4) ELEMENT ROWS
M2
HTR1
4
O
DEHUM
1
5
24 VAC
M5
RD
FUSE
4
BLWR
LEARN
5
DIP SWITCHES
2
M2R
AIR
40 VA
L2
AD
JUST
L1L1
4
RD
2
3
BL
L2
1
3
3
FL1
3
7
RD
8
THREE (3) ELEMENT ROWS
L1
TL
9
L2
BLBL
2
RD
INDOOR
M8
7
7
BIAS
RD
4
5
7
BK
1
5
BK
BL
BK
BL
YL
PU
PL2
1
FUSE 3 A
208/230 VAC
BR
GND
ECM MOTORHARNESS
GND
6
L2
YL
6
L1
COM
FL
TL
9
BR
G
BK
M1
UN
US
ED7
WH 6
MARK ACCORDING TO NUMBER OF HEATER ELEMENT ROWS IN STALLED. NO MARK INDICATES NO HEAT KIT INSTALLED.
BK
G
INTEGRATED CONTROL MODULE
RD
O
BR
TL
1
2
BK
W2
BIAS
BK
3
5
M1
WH
RX LED
2
4
M1
24V THERMOSTAT CONNECTIONS
HTR1
PU
M6
BK
FL
HTR1
TL
HTR4
R1
W2
PU
L2
M2
1
FL
DISCONNECT
KIT COMBINATION ON THIS UNIT'S S&R PLATE. AFTER INSTALLING OPTION AL HEAT KIT, MARK AN "X" IN THE PROVIDED ABOVE.
BK
SEE NOTE 6
4
6
2
BL
RDPU
Y2
BK
RD
BK
BK
6
M3
BL
TRC
BK
1
WH
3
9
GND (4)
M3
2
BK
2
R1
INDOOR
9
M4
RD
RD
8
TH
+VDC (1)Y1
RD9
HTR3
R2
4
ELEC
STATUSLED
TH
L1
TL
L1
BL
FL
BK
Y2
RD
HTR2
YL
RX (2)
M3
M2
RD
GND
4
TLHTR3
24 V3 A
W1
TL
GND
4
ONE (1) ELEMENT ROWS
GN
BL
BK
Y1
M1
R
BK
CFM LED
1
BK
3
M1
W1
RD
L2
8
9
R2
HTR2
5
M2
W1 (1)
M4
BK
C
L1
8
TWO (2) ELEMENT ROWS
RD
DEHUM
TX (3)
BL
TL
3
GND
TL
NOTE: WHEN INSTALLING HEATER KIT, ENSURE SPEED TAP DOES NOT EXCEED MINIMUM BLOWER SPEED (MBS) SPECIFIED FOR THE AIRHANDLER/HEATER
HTR2
BL
TER
M
R
6
HEAT SEQUENCER R2
RD
TRANSFORMER
RD
DEL
AY
FL
YL M7
CO
OL 24 V
THER
MO
STAT CO
NN
EC
TION
S
2
HEAT SEQUENCER R1
GN
7
W H
TR
BK
RD
FL
2
FL
L2
BLWR
8
HTR1
BK
BKYL
EQUIPMENT GND
TERMINAL
PLUG CONNECTION
LOW VOLTAGE FIELD
HI VOLTAGE FIELD
JUNCTION
HI VOLTAGE (230V)
RESISTOR
PROT. DEVICE
INTEGRATED CONTROL
LOW VOLTAGE (24V)
FIELD SPLICE
INTERNAL TO
FIELD GND
OVERCURRENT
BK BLACK
OR ORANGE
BL BLUE
PK PINK
GY GRAYRD RED
WH WHITE
PU PURPLE
YL YELLOW
BR BROWN
COLOR CODES:
GN GREEN
NOTES:1. PLACE RED WIRES ON TRANSFORMER TERMINAL 2 FOR 208 VAC OPERATION.
2. MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING.
3. IF ANY OF THE ORIGINAL WIRES AS SUPPLIED WITH THIS UNIT MUST BE REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A TEMPERATURE RATING OF AT LEAST 105°C. USE COPPER CONDUCTORS ONLY.
4. UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO N.E.C AND LOCAL CODES.
5. TO RECALL THE LAST 6 FAULTS, MOST RECENT TO LEAST RECENT, DEPRESS SWITCH FOR MORE THAN 2 SECONDS WHILE IN STANDBY (N THERMOSTAT INPUTS)
6. BIAS AND TERM DIP SWITCHES MUST BE IN "ON" POSITION. RED STATUS LED PROVIDES NETWORK STATUS. GREEN RX LED INDICATES NETWORK TRAFFIC. USE LEARN BUTTON TO RESET NETWORK.
7. DISCARD CONNECTOR PL1 WHEN INSTALLING OPTIONAL HEAT KIT.
0140A00039-D
1
2
3
COM
CIRCULATOR BLOWER
RD
R
O
DEHUM
FUSE
2
G
O
W2
BK
24V THERMOSTAT CONNECTIONS
W2
Y2
1
C
G
Y1Y1
TH
Y2
RD
GND
24 V3 A
W1
GN
Y1
R
W1
C
DEHUM
BL
GND
24 V THE
RM
OSTAT C
ON
NE
CTIO
NS
MARK ACCORDING TO NUMBER OF HEATER ELEMENT ROWS IN STALLED. NO MARK INDICATES NO HEAT KIT INSTALLED.
KIT COMBINATION ON THIS UNIT'S S&R PLATE. AFTER INSTALLING OPTION AL HEAT KIT, MARK AN "X" IN THE PROVIDED ABOVE.
NOTE: WHEN INSTALLING HEATER KIT, ENSURE SPEED TAP DOES NOT EX
9
TWO (2) ELEMENT ROWS L2 THREE (3) ELEMENT ROWSL2L1L1
GN
TR