Carrier 50JX Instruction Manual

50JX024-060Single-Package Heat Pump UnitsInstallation, Start-Up and Service InstructionsNOTE: Read the entire instruction manual before starting thein

Fig. 13—Wiring SchematicsC9905310

Fig. 14—Wiring SchematicsC9905411

Table 3—Electrical Data—50JXUNIT 50JXSIZEV-PH-HZVOLTAGERANGECOMPRESSOR ODFM IDFM ELECTRIC HEAT POWER SUPPLY (MOCP)Min Max RLA LRA FLA FLA KW FLA Min.

Fig. 15—Electrical Data LegendC99051452=5v457=7v455=2vLEGENDFLA — Full Load AmpsHACR — Heating, Air Conditioning and RefrigerationIFM — Indoor-Fan Mot

d. Make sure that all tools and miscellaneous loose parts havebeen removed.5. Compressors are internally spring mounted. Do not loosen orremove compre

Fig. 22—Typical Heat Pump Operation, Cooling Mode1. Hot gas from compressor flows through the 4-way valve and is directed to the outdoor coil. It is t

Fig. 23—Cooling Charging Chart, 50JX 024 UnitsC99031689 100.030.040.050.060.070.080.090.0207276345414483551620SUCTION LINE PRESSURE (KILOPASCALS)SUCTI

NOTE: Be sure that all supply-and return-air grilles are open, freefrom obstructions, and adjusted properly.Airflow can be changed by changing the lea

MAINTENANCETo ensure continuing high performance, and to minimize thepossibility of premature equipment failure, periodic maintenancemust be performed

REFRIGERANT CIRCUIT — Inspect all refrigerant tubing con-nections and the unit base for oil accumulation annually. Detectingoil generally indicates a

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

Table 5—Cooling and Heating Troubleshooting ChartSYMPTOM CAUSE REMEDYCompressor and outdoor fan will not start.Power failure Call power company.Fuse b

Cooling and Heating Troubleshooting Chart (cont’d)SYMPTOM CAUSE REMEDYSuction pressure too low (Cool) Dirty air filter Replace filter(Heat) Outdoor co

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

23

Copyright 2000 CARRIER Corp. • 7310 W. Morris St. • Indianapolis, IN 46231 50jx-1siManufacturer reserves the right to discontinue, or change at any ti

Immediately notify the nearest Carrier Air Conditioning office ifany item is missing. To prevent loss or damage, leave all parts inoriginal packages u

C99098UNIT SIZE PART NUMBERAIN. [MM]BIN. [MM]CIN. [MM]DIN. [MM]50JXRoof Curb024-036 CPRFCURB007A00 14 [356] 11-27/32 [301] 30-5/8 [778] 28-3/4 [730]04

SLAB MOUNT — Place the unit on a solid, level concrete padthat is a minimum of 4 in. thick with 2 in. above grade (Fig. 6). Theslab should extend appr

Select and size ductwork, supply-air registers, and return air grillesaccording to ASHRAE (American Society of Heating, Refrigera-tion, and Air Condit

(where permitted) or onto a gravel apron in ground level installa-tions. Install a field-supplied condensate trap at end of condensateconnection to en

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

Fig. 12—Wiring SchematicsC990529