Carrier 38AKS028-044 Specifications

Installation, Start-Up andService InstructionsCONTENTSPageSAFETY CONSIDERATIONS ...1BEFORE INSTALLATION ...1-3Riggin

LEGENDAFS — Airflow SwitchCB — Circuit BreakerEQUIP — EquipmentFU — FuseGND — GroundLLS1 — Liquid Line Solenoid forSolenoid Drop ControlLLS2 — Liquid L

BPR — Bypass RelayC—Contactor, CompressorDB — Circuit BreakerCR — Control RelayCM — Control ModuleEQUIP — EquipmentFC — Fan ContactorFig. 9A — Compone

LEGENDBPR — Bypass RelayC—Contactor, CompressorCB — Circuit BreakerCR — Control RelayCM — Control ModuleEQUIP — EquipmentFC — Fan ContactorFM — Fan Mo

START-UPInitial CheckDo not attempt to start the condensing unit, even mo-mentarily, until the following steps have been com-pleted. Compressor damage

Fig. 10 — 38AKS028 Charging Chart, 50/60 Hz14

Fig. 11 — 38AKS034 Charging Chart, 50/60 Hz15

Fig. 12 — 38AKS044 Charging Chart, 50/60 Hz16

FOR SERVICING ONLY — To speed up the 5-minute anti-short cycle, a temporary jumper may be placed between ter-minals T1 and T6 of the control module.Th

COMPRESSOR END AND RIGHT-SIDE VIEWTRAN2CB1CB2TB3FC3FC2FCCMCR1TRAN1TB2C1COMPRESSOR END, CONTROL PANEL REMOVEDOIL PRESSURE SAFETY SWITCHCOMPRESSOR END,

Fan Adjustment — Adjust fan as shown in Fig. 14.Oil Charge — Compressors are factory charged with oilas follows:COMPRESSORAMOUNTpints (liters)06E9265

Table 1A — Physical Data — EnglishUNIT 38AKS 028 034 044COMPRESSOR Reciprocating Semi-HermeticNo. ...Type 1...06E9265 1...06E9275 1...06E9299No. Cyls

Oil Pressure Safety Switch (OPS) — The OPS inthe control circuit stops the compressor and unit, if properoil pressure differential is not established

TROUBLESHOOTINGSYMPTOM AND PROBABLE CAUSE PROBABLE REMEDYCOMPRESSOR DOES NOT RUN1. Control circuit breaker tripped 1. Reset control circuit breaker2.

PACKAGED SERVICE TRAININGOur packaged service training programs provide an excellent way to increase your knowledge of theequipment discussed in this

START-UP CHECKLIST(Remove and store in job file)A. Preliminary InformationOUTDOOR:MODELNO. SERIALNO.INDOOR: AIR HANDLER MANUFACTURERMODEL NO. SERIAL NO

C. Start-UpCHECK EVAPORATOR FAN SPEED AND RECORD.CHECK CONDENSER FAN SPEED AND RECORD.AFTER AT LEAST 10 MINUTES RUNNING TIME, RECORD THE FOLLOWING MEA

Placing Unit — There must be 4 ft (1220 mm) for ser-vice on all sides of unit, and a minimum of 8 ft (2440 mm)clear air space above unit. For multiple

Receiver — No receiver is provided with the unit; it isrecommended that one not be used.Piping Procedure — Do not remove run-around pipefrom suction a

Table 2A — Refrigerant Piping Sizes — 60 HzSINGLE SUCTION RISERSUNIT38AKSLENGTH OF INTERCONNECTING PIPING, FT (M)16-25 (4.9-7.6) 26-50 (7.9-15.2) 51-7

Power Supply — Electrical characteristics of availablepower supply must agree with unit nameplate rating. Supplyvoltage must be within limits shown in

FIELD CONNECTIONS1. Main Power — Bring wires from the fused disconnectswitch through hole in bottom rail of unit to control box1112(Fig. 6 and 7) and

Fig. 6 — Dimensional Drawing, 38AKS028,034LEGENDNEC — National Electrical CodeVAV — Variable Air VolumeNOTES:1. Theremust be minimum (2440 mm) 8 ft. c

LEGENDNEC — National Electrical CodeNOTES:1. Theremust be minimum (2440 mm) 8 ft. clear air space aboveunit.2. The approximate operating weight of the