Carrier AIR COOLED SPLIT SYSTEM 38AQS008 Specifications

Installation, Start-Up andService InstructionsCONTENTSPageSAFETY CONSIDERATIONS ...1INSTALLATION ...1-9Step 1 —

START-UPPreliminary Checks1. Check that all internal wiring connections are tight andthat all barriers, covers, and panels are in place.2. Field elect

Should room temperature continue to fall, circuit R-W ismade through second-stage thermostat bulb. If optional elec-tric heat package is used, a relay

5. Remove crankcase heater from compressor base.6. Remove compressor holddown bolts and lift compres-sor off basepan.7. Remove compressor from unit.8.

Fig. 16 — Cooling Mode OperationFig. 17 — Heating Mode Operation13

TROUBLESHOOTING CHART, COOLING CYCLELEGENDTXV — Thermostatic Expansion Valve14

TROUBLESHOOTING CHART, HEATING CYCLELEGENDN.C. — Normally Closed15

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.PC 1

START-UP CHECKLISTA. Preliminary InformationOUTDOOR: MODEL NO. SERIAL NO.INDOOR: AIR HANDLER MANUFACTURERMODEL NO. SERIAL NO.ADDITIONAL ACCESSORIESB.

Table 1A — Physical Data (English)UNIT 38AQS008 60 Hz 50 HzOPERATING WEIGHT (lb)Aluminum Coils (Standard) 540 594Copper Coils (Optional) 608 662RIGGIN

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.PC 1

Table 2 — Refrigerant Piping SizesLINEAR LENGTH OF PIPING — ft (m)UNIT38AQS0-25(0-7.6)25-50(7.6-15.2)50-75(15.2-22.9)75-100(22.9-30.5)Line Size (in. O

UNIT38AQS008UNITW/ALUMINUM COILUNITW/COPPER COILWEIGHT CHART (WITH ALUMINUM COIL) WEIGHT CHART (WITH COPPER COIL)Std Unit Corner W Corner X Corner Y C

All field wiring must comply with NEC (U.S.A.) and lo-cal requirements.Install field wiring as follows:1. Install conduit through side panel openings.2.

LEGENDNEC — National Electrical CodeTXV — Thermostatic Expansion Valve*Accessory item.†Field supplied.NOTES:1. All piping must follow standard refrige

Table 4 — Electrical DataUNIT38AQSNOMINAL VOLTAGE(V-Ph-Hz)VOLTAGE RANGE COMPRESSOR OFM POWER SUPPLY MINIMUM DISCONNECTMin Max RLA LRA FLA MCAMAX FUSE

Table 5A — Accessory Electric Heater Data (60 Hz)UNIT40RMQHEATERPART NO.V-PH-Hz NOMINAL kWHEATERAMPSMCA* MOCP*008CAELHEAT001A00 240-3-60512.0 25.6 30C

2CORNERPOSTRACEWAY THERMOSTATFIELD CONNECTIONPOWER WIRINGCONNECTIONSFig. 6 — Fusible Plug LocationsLEGENDNOTE: The 8 o’clock position is shown above.F