Carrier LIGHT COMMERCIAL CONDENSING UNITS 38HDL018-060 User Manual

Installation, Start-Up andService InstructionsCONTENTSPageSAFETY CONSIDERATIONS ...1INSTALLATION ...1-7Step

MAINTENANCEBefore performing recommended maintenance, be sureunit main power is off. Failure to do so may result inelectrical shock or injury from rot

TROUBLESHOOTINGTROUBLESHOOTING CHART — COOLING CYCLE11

Copyright 1998 Carrier CorporationManufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and w

UNITSIZE38HDLABCDEFGHJKLMOPERATINGWEIGHTft-in. mm ft-in. mm ft-in. mm ft-in. mm ft-in. mm ft-in. mm ft-in. mm ft-in. mm ft-in. mm ft-in. mm ft-in. mm

Step 2 — Rig and Mount UnitMOUNTING ON GROUND — Mount unit on a solid, levelconcrete pad. Position unit so water or ice from roof doesnot fall directl

with a wet cloth, the tubing set can be brazed to the servicevalve using either silver bearing or non-silver bearing braz-ing material. Consult local

Table 1A — Physical Data (English)UNIT 38HDL 018 024 030 036 048 060NOMINAL CAPACITY (Btuh) 18,000 24,000 30,000 36,000 48,000 60,000UNIT OPERATING WE

LEGENDC—Contactor (12-va)HC — Heating ControlIFM — Indoor-Fan MotorIFR — Indoor-Fan RelayTRANS — TransformerField WiringFactory Wiring*The IFR and IFM

Table 2 — American/European Wire ConversionsAMERICAN EUROPEANIndustryStandardSizeAmericanConversion(mm)IndustryStandardSize (mm2)18 AWG 0.82 1.016 AWG

Table 3 — Electrical DataUNIT SIZE38HDLV-PH-HzOPERATIONALVOLTAGE*COMPRESSOR POWER SUPPLYMin Max RLA LRA Fan FLA MCAMax Fuse† or HACR-TypeCkt Bkr Amps0

SUBCOOLING METHOD (COOLING, TXV) — To checkand adjust charge during cooling season, use Tables 6A and6B and the following procedure:1. Operate unit a