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TECHNICAL SUPPORT MANUALSplit System Heat Pump(C,H,T)CH9 Two--StageSafety Labeling and Signal WordsDANGER, WARNING, CAUTION, andNOTEThe signal words DANGER, WARNING,CAUTION, and NOTE are used to identify levels ofhazard seriousness. The signal word DANGER isonly used on product labels to signify an immediatehazard. The signal words WARNING, CAUTION,and NOTE will be used on product labels andthroughout this manual and other manuals that mayapply to the product.DANGER -- Immediate hazards which will result insevere personal injury or death.WARNING -- Hazards or unsafe practices whichcould result in severe personal injury or death.CAUTION -- Hazards or unsafe practices whichmay result in minor personal injury or product orproperty damage.Signal Words in ManualsThe signal word WARNING is used throughout thismanual in the following manner:!WARNINGWARNINGThe signal word CAUTION is used throughout thismanual in the following manner:!CAUTIONSignal Words on Product LabelingSignal words are used in combination with colorsand/or pictures on product labels.NOTE -- Used to highlight suggestions which willresult in enhanced installation, reliability, oroperation.TABLE OF CONTENTSModel Number Identification . . . . . . . . . . . . . . . . . . . 2--3R--410A Quick Reference Guide . . . . . . . . . . . . . . . . . . 4Wiring Diagram Connection . . . . . . . . . . . . . . . . . . . . . . 5Wiring Diagram Schematic . . . . . . . . . . . . . . . . . . . . . . 6Flash Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7--8R--410A Charging Chart . . . . . . . . . . . . . . . . . . . . . . . . . 9Tech Labels (Expanded Data) . . . . . . . . . . . . . . . 10--14Cooling Multiplying Factors . . . . . . . . . . . . . . . . . . 15--38Heating Multiplying Factors. . . . . . . . . . . . . . . . . 38--56Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62CCH9,HCH9,TCH9 Parts List . . . . . . . . . . . . . . . . 63--66Exploded Drawings . . . . . . . . . . . . . . . . . . . . . . . . . 67--69!WARNINGPERSONAL INJURY, AND/OR PROPERTY DAMAGE HAZARDFailure to carefully read and follow this warningcould result in equipment malfunction, propertydamage, personal injury and/or death.Installation or repairs made by unqualified persons could result in equipment malfunction, property damage, personal injury and/or death.The information contained in this manual is intended for use by a qualified service technician familiar with safety procedures and equipped withthe proper tools and test instruments.Installation must conform with local buildingcodes and with the National Electrical CodeNFPA70 current edition or Canadian ElectricalCode Part 1 CSA C.22.1.428 04 1801 00 April 2012

TECHNICAL SUPPORT MANUALSplit System Heat Pump: (C,H,T)CH9OUTDOOR UNIT MODEL NUMBER IDENTIFICATION GUIDE (single phase)Digit Position:Example Part Number:12345, 6789101112HCTCH924GKA100T Tempstar MainlineH Arcoaire MainlineC Comfortmaker MainlineC Day & Night MainlineH Airquest MainlineC Keeprite MainlineC Kenmore MainlineH Kenmore MainlineT Kenmore MainlineH ICP Commercial MainlineH Heil MainlineN Tempstar EntryBRANDINGN Arcoaire EntryBRANDINGN Comfortmaker Entry BRANDINGN Day & Night EntryBRANDINGN Airquest EntryBRANDINGN Keeprite EntryBRANDINGN Kenmore EntryBRANDINGN Kenmore EntryBRANDINGN Kenmore EntryBRANDINGN ICP Commercial Entry BRANDINGC CommunicatingKEY CHARACTERISTICA Air ConditionerH Heat Pump6 16 SEER7 17 SEER8 18 SEER9 19 SEERTYPENOMINAL EFFICIENCY24 24,000 BTUH 2 tons36 36,000 BTUH 3 tons48 48,000 BTUH 4 tons60 60,000 BTUH 5 tonsG Coil Guard GrilleK 208/230--1--60NOMINAL CAPACITYFEATURESVOLTAGESales CodeEngineering RevisionExtra DigitExtra Digit2488 04 1801 00

TECHNICAL SUPPORT MANUALSplit System Heat Pump: (C,H,T)CH9ACCESSORIES PART NUMBER IDENTIFICATION GUIDEDigit Position:Example Part Number:123456, 78, 910, 11NASA00101CHN Non--BrandedA AccessoryPRODUCT GROUPS Split System (AC & HP)A OriginalB 2nd Generation0 Generic or Not Applicable2 R--224 R--410AProduct Identifier NumberPackage QuantityType of Kit (Example: CH Crankcase Heater)428 04 1801 00KIT USAGEMAJOR SERIESREFRIGERANT3

TECHNICAL SUPPORT MANUALSplit System Air Conditioner: (C,H,T)CA7R--410A QUICK REFERENCE GUIDE R--410A refrigerant operates at 50% -- 70% higher pressures than R--22. Be sure that servicing equipment andreplacement components are designed to operate with R--410A. R--410A refrigerant cylinders are rose colored. Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400 or DOT BW400. R--410A systems should be charged with liquid refrigerant. Use a commercial type metering device in themanifold hose when charging into suction line with compressor operating. Manifold sets should be 750 psig high--side and 200 psig low--side with 520 psig low--side retard. Use hoses with 750 psig service pressure rating. Leak detectors should be designed to detect HFC refrigerant. R--410A, as with other HFC refrigerants, is only compatible with POE oils. Vacuum pumps will not remove moisture from oil. Do not use liquid line filter--driers with rated working pressures less than 600 psig. Do not install a suction line filter--drier in liquid line. POE oils absorb moisture rapidly. Do not expose oil to atmosphere. POE oils may cause damage to certain plastics and roofing materials. Wrap all filter--driers and service valves with wet cloth when brazing. A liquid line filter--drier is required on every unit. Do not use with an R--22 TXV. If indoor unit is equipped with an R--22 TXV, it must be changed to an R--410A TXV. Never open system to atmosphere while it is under a vacuum. When system must be opened for service, break vacuum with dry nitrogen and replace all filter--driers. Evacuateto 500 microns before recharging. Do not vent R--410A into the atmosphere. Do not use capillary tube indoor coils. Observe all WARNINGS, CAUTIONS, NOTES, and bold text.4International Comfort Products, LLCLewisburg, TN 37091 USA421 04 1801 00

TECHNICAL SUPPORT MANUALSplit System Heat Pump: (C,H,T)CH(9)CONNECTION DIAGRAMModel Sizes: 24, 36, 48, 08/2301 POWERBLK23 23BLKYELC UYELVIO120TIME(MIN)PL3C1 2 3HPSHIBLUOPTIONALNON-- COMMUNICATINGCONTROLSEE NOTE #105432OFF(DEFAULT)COMM STATUSAS PROVIDEDBY MANUFACTURERSEE NOTE #11PL5Dx 5BLKPL6UTIL C W1 Y1 Y2 OFORCEDDEFROSTPL8OAT*LSMODEL PLUGYELGRNUTIL C W1 Y1 Y2 IME60301REDPWM230BRN2PWM1BLK BLKBLU90REDYELCCHODFCBSEC-- 260REDYELSEC-- EQUIP GNDYELBLK2111L2TO INDOOR UNITLEGENDFACTORY POWER WIRINGFACTORY CONTROL WIRINGFIELD CONTROL WIRINGFIELD POWER WIRINGCOMPONENT CONNECTIONFIELD SPLICECAPCB*CCHCHSCOMMCOMPJUNCTIONCAPACITORCONTROL BOARDCRANKCASE HEATERCRANKCASE HEATER SWITCHSYSTEM COMMUNICATIONCOMPRESSOR* MAY BE FIELD INSTALLEDCONTCSDTSHPSLPS* LSOATOCTCONTACTORCOMP HIGH CAP SOLENOIDDISCHARGE TEMP SWITCHHIGH PRESSURE SWITCHLOW PRESSURE SWITCHLIQUID SOLENOIDTHERMISTOR (OUTDOOR AIR)THERMISTOR COILOFMRVSSCSEV*SRSTATUSTRANOUTDOOR FAN MOTORREVERSING VALVE SOLENOIDSTART CAPACITORSOLENOID EXPANSION VALVESTART RELAYSYSTEM FUNCTION LIGHTTRANSFORMERNOTES:1. Compressor furnished with inherent thermal protection.2. To be wired in accordance with National Electric Code (N.E.C.) and local codes.3. Outdoor unit control requires a minimum of 27 va, 24 vac control power.4. Use copper conductors only. Use conductors suitable for at least 70ºC (167ºF).5. If indoor section has a transformer with a grounded secondary, connect the grounded side to “C”.6. If any of the original wire, as supplied, must be replaced, use the same or equivalent wire.7. Check all electrical connections inside control box for tightness.8. Do not attempt to operate unit until service valves have been opened (Back Seated).9. MUST USE THERMOSTAT OR OBSERVER WALL CONTROL LISTED IN PRE--SALE LITERATURE ONLY.10. In case of non-- communicating indoor system disconnect factory provided wires from Dx and Dx-- terminals.Use factory provided wires to connect to W1, Y1, Y2, and O as required by installation instructions. Cap orremove unused factory provided wires. If additional grounding is needed connect to “C” terminal.11. For communicating control only.338755--101428 04 1801 005REV. A


TECHNICAL SUPPORT MANUALSplit System Heat Pump: (C,H,T)CH(9)FAULT DEFINITIONFLASH CODEFAULT DEFINITIONFLASH CODEOutdoor Air Temp SensorStandby531, PauseLow Stage552, PauseHigh Stage56Temp Sensor Range ErrorEmergency Mode71Low Stage Thermal CutoutSystem Communications Failure72High Stage Thermal CutoutOn, No FlashContinuous Flash1625Invalid Model PlugCoil Temp SensorContactor Shorted7331High Pressure Switch Trip74Contactor Open (No 230v to Comp)32Low Pressure Switch Trip81Low Stage Thermal Lockout (4 HRS)45Control Fault82High Stage Thermal Lockout (4 HRS)46Brown out (230V)83Low Pressure Lockout (4 HRS)47No 230v with Call to Run84High Pressure Lockout (4 HRS)Short flashes indicate the first digit in the status code, followed by long flashes indicating the second digit of the status code.Time DelaysThe unit time delays include:UNIT OPERATION--Five minute time delay to start cooling operation when there is a call from the thermostat or wallControl. To bypass this feature, momentarily short and release Forced Defrost pins or hold the“Cool To” or “Heat To” button on the Observer Wall Control for 10 seconds.--Five minute compressor re--cycle delay on return from a brown--out condition.--Two minute time delay to return to standby operation from last valid communication (Observer Communicating Wall Control only).--One minute time delay of outdoor fan at termination of cooling mode when outdoorambient is greater than or equal to 100 F (37.8 C).--Fifteen second delay at termination of defrost before the auxiliary heat (W1) is de-energized.--Twenty second delay at termination of defrost before the outdoor fan is energized.--Thirty second compressor delay and 40 seconds outdoor fan delay when quietshift enabled.Crankcase Heater--The crankcase heater is de--energized when the compressor is running. The crankcase heater is enegized when the compressor is off and the ambient is less than 42 F. When the ambient temperature isbetween 65 F and 42 F the crankcase heater is energized 30 minutes after the compressorIs turned off. When the ambient is above 65 F the crankcase heater remains de--energized after thecompressor is turned off.Defrost time selectionThis control offers 5 possible defrost interval times: 30, 60, 90, 120 minutes, or AUTO. Defrost intervalsare selected by dip switches on the unit control board or by the Observer Wall Control. The ObserverWall Control selection overrides the control board dip switch settings.AUTO defrost adjusts the defrost interval time based on the last defrost time as follows:When defrost time 3 minutes, the next defrost interval 120 minutes.When defrost time 3--5 minutes, the next defrost interval 90 minutes.When defrost time 5--7 minutes, the next defrost interval 60 minutes.When defrost time 7 minutes, the next defrost interval 30 minutes.428 04 1801 007

TECHNICAL SUPPORT MANUALSplit System Heat Pump: (C,H,T)CH(9)DefrostThe control board accumulates compressor run time. As the accumulated run time approaches the selected defrostinterval time, the control board monitors the coil temperature sensor for a defrost demand. If a defrost demand exists,a defrost cycle will be initiated at the end of the selected time interval. A defrost demand exists when the coil temperature is at or below 32 F (0 C) for 4 minutes during the interval. The defrost cycle is terminated when the coil temperature reaches 65 F (18.33 C) or 10 minutes has passed. When OAT is 25 F (--3.9 C), defrost will occur in low orhigh stage as demanded by the thermostat or Wall Control. If OAT is 25 F (--3.9 C), defrost will occur in high stageonly, regardless of thermostat or Wall Control demand, and will terminate at 50 F (10 C) coil temperature with a minimum of 2.5 minutes in defrost. If the coil temperature does not reach 32 F (0 C) within the interval, the interval timerwill be reset and start over. Upon initial power up the first defrost interval is defaulted to 30 minutes. Remaining intervals are at selected times. Defrost is only allowed to occur below 50 F (10 C) outdoor ambient temperature. The outdoor fan output (ODF) will remain off for 20 seconds after termination. This delay will allow time for the system to capture the heat from the outdoor coil and reduce the “steam cloud” effect that may occur on transition from defrost toheating cycle.Field initiated forced defrostOn a system with non--communicating (non--Observer) control, forced defrost can be initiated by manually shortingthe 2--pin header labeled FORCED DEFROST (see page 6) on the control board for 5 seconds then releasing. Ifcoil temperature is at defrost temperature of 32 F (0 C), and outdoor air temperature is below 50 F (10 C), a fulldefrost sequence will occur. If coil temperature or outdoor air temperature does not meet the above requirements,an abbreviated 30 second defrost will occur.8428 04 1801 00

TECHNICAL SUPPORT MANUALSplit System Heat Pump: (C,H,T)CH(9)R--410A CHARGING CHARTMeasured LiquidPressure 4395406416427439450462474428 04 1801 00 8120122124( C)3Rating Plate (required) Subcooling Temperature F ( C) F( C) F( C) F( C)F( C)84106127148F16( --410A Required Liquid Line Temperature F ( 041424344469

TECHNICAL SUPPORT MANUALSplit System Heat Pump: (C,H,T)CH(9)MULTIPLYING FACTORS† Total capacities are net (I.D. blower heat subtracted) system capacities based on 25 foot (7.62m) lineset.If additional tubing length and/or indoor unit is located above outdoor unit, a slight variation in capacitymay occur.†† At TVA rating indoor condition (75 F db, 63 F wb), all other indoor air temperatures are at 80 F dbIf additional tubing length and/or indoor unit is located above outdoor unit, a slight variation in capacitymay occur.*System amps are total of indoor and outdoor amps.‡ Chart data is for 80 F indoor dry bulb. For indoor db temperatures other than 80 F, measure Indoordb and Indoor CFM, and plug these into theformula below. Measure outdoor db and indoor wet bulb, apply these to the chart above, find MBh andS/T, and plug these into the formula below.(Note: if indoor db is the only thing changing, total capacity, MBh, stays the same.)Sensible Capacity at Indoor db LOWER than 80 F ( MBh x S/T ) --((Sensible Capacity at Indoor db HIGHER than 80 F ( MBh x S/T ) 10( 80 -- Indoor db ) x 835 x Indoor CFM1000))( Indoor db -- 80 ) x 835 x Indoor CFM1000428 04 1801 00

TECHNICAL SUPPORT MANUAL428 04 1801 00Split System Heat Pump: (C,H,T)CH(9)11

TECHNICAL SUPPORT MANUAL12Split System Heat Pump: (C,H,T)CH(9)428 04 1801 00

TECHNICAL SUPPORT MANUAL428 04 1801 00Split System Heat Pump: (C,H,T)CH(9)13

TECHNICAL SUPPORT MANUAL14Split System Heat Pump: (C,H,T)CH(9)428 04 1801 00

428 04 1801 LING 2ANOMV106D12*MV08B15**B*COOLING 9 24FURNACE ACITYSPEEDHIGHCOOLING Multiplying Factors for other Indoor 8MV*0901716***8MV*0701412**FURNACE MODELTECHNICAL SUPPORT MANUALSplit System Heat Pump: (C,H,T)CH(9)15

4A*MODELCOOLING 8MV*0901716***8MV*0701412***9MX*04

H Heil Mainline N Tempstar Entry BRANDING N Arcoaire Entry BRANDING N Comfortmaker Entry BRANDING N Day & Night Entry BRANDING . TECHNICAL SUPPORT MANUAL Split System Heat Pump: (C,H,T)CH(9) 6 428 04 1801 00 Model Sizes: 24, 36, 48, 60 LPS EQUIP GND TRAN 24V TRAN 230V DEFROST TIME FORCED DEFROST 2 3 C 1 PL1 PL8 CB PWM2 PWM1 MODELPLUG

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