Carrier SINGLE PACKAGED ELECTRIC COOLING UNITS 50GX Manuel d'utilisateur

50GS, 50GXSingle Packaged Electric Cooling UnitsInstallation, Start-Up, and Operating Instructions50GS Sizes 018-060, 50GX Sizes 024-060NOTE: Read the

Failure to follow these precautions could result in damage tothe unit being installed:1. Make all electrical connections in accordance with NECANSI/NF

Table 4—Electrical Data—50GSUNIT 50GSSIZEV-PH-HZVOLTAGERANGECOMPRESSOR OFM IFM ELECTRIC HEAT POWER SUPPLYMin Max RLA LRA FLA FLA Nominal Kw* FLA MCA M

Table 5—Electrical Data—50GXUNIT 50GXSIZEV-PH-HZVOLTAGERANGECOMPRESSOR OFM IFM ELECTRIC HEAT POWER SUPPLYMin Max RLA LRA FLA FLA Nominal Kw*FLA MCAMax

Run the low-voltage leads from the thermostat, through the inlethole, and into unit low-voltage splice box.Locate five 18-gage wires leaving control b

leak. Leak test all refrigerant tubing connections usingelectronic leak detector, halide torch, or liquid-soap solu-tion. If a refrigerant leak is det

Fig. 12—Wiring Diagram (208/230-60-1)C9900315

Fig. 13—Wiring Diagram (208/230-60-3)C9900416

Fig. 14—Wiring Diagram (460-60-3)C9900517

When evaluating the refrigerant charge, an indicated adjust-ment to the specified factory charge must always be veryminimal. If a substantial adjustme

inspected at least once each year by a qualified service person. Totroubleshoot heating or cooling of units, refer to tables at the backof the book.Th

Before performing service or maintenance operations onsystem, turn off power to unit. Turn off accessory heaterpower switch, if applicable. Electrical

The ability to properly perform maintenance on this equip-ment requires certain expertise, mechanical skills, tools, andequipment. If you do not posse

Errors made when reconnecting wires may cause improperand dangerous operation. Label all wires prior to disconnec-tion when servicing.The minimum main

AIR FILTERNever operate the unit without a suitable air filter in thereturn-air duct system. Always replace the filter with the samedimensional size a

c. On all units remove blower assembly from unit. Removescrews securing blower to blower partition and slideassembly out. Be careful not to tear insul

CONDENSER COIL, EVAPORATOR COIL, AND CONDEN-SATE DRAIN PANInspect the condenser coil, evaporator coil, and condensate drainpan at least once each year

System under pressure. Relieve pressure and recover allrefrigerant before system repair or final unit disposal to avoidpersonal injury or death. Use a

Table 10—Troubleshooting—CoolingSYMPTOM CAUSE REMEDYCompressor and condenser fan will not start.Power Failure Call power companyFuse blown or circuit

START-UP CHECKLIST(REMOVE AND STORE IN JOB FILE)I. PRELIMINARY INFORMATIONModel No ...

Copyright 2003 CARRIER Corp. • 7310 W. Morris St. • Indianapolis, IN 46231 50gsgx4siManufacturer reserves the right to discontinue, or change at any t

Accessory lifting kit is only to be used with Small Packagedunits which have a composite base pan with molded riggingholds.INSPECTIONPrior to initial

2. Place each of the four (4) metal lifting brackets into therigging holds in the composite pan.3. Tighten the ratchet strap unit tight. Lifting brack

Fig. 4A— Roof Curb DimensionsUNIT SIZE ODS CATALOG NUMBERAIN. (MM)BIN. (MM)CIN. (MM)DIN. (MM)50GS018-042 50GX024-036CPRFCURB006A00 8 (203) 11(279) 16-

Fig. 4B—50GS and 50GX Unit Corner WeightsCORNER #50GS 50GX018 024 030 036 042 048 060 024 030 036 042 048 0601 58 60 59 62 76 69 84 76 84 85 71 78 852

Lifting point should be directly over the center of gravity forthe unit.Step 6—Connect Condensate DrainNOTE: When installing condensate drain connecti

CONFIGURING UNITS FOR DOWNFLOW (VERTICAL) DIS-CHARGEBefore performing service or maintenance operations on thesystem, turn off main power to unit and

5. It is recommended that the unit base insulation around theperimeter of the vertical return-air opening be secured to theunit base with aluminum tap