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COOLING
installation, start-up and
service instructions
538J
Sizes 018-060
LIGHT COMMERCIAL
CONDENSING UNITS
Cancels: New II 538J-18-1
1/15/02
CONTENTS I. COMPLETE PRE-INSTALLATION CHECKS
Page A. Unpack Unit
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 1
Move unit to final location. Remove unit packaging being
careful not to damage service valves or grilles.
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7
I. Complete Pre-Installat
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—2— OPERATING UNIT ABCD E F G H J K L M WEIGHT SIZE 538J 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 ft-in. mm ft-in. mm lb kg 1 15 9 7 3 1 1 5 1 5 018 2-1 / 638.2 3-0 / 938.2 1-2 / 369.9 1-4 406.4 1-11 / 595.3 1-5 / 436.6 1-5 / 444.5 1-8 / 511.2 1-1 330.2 0-6 / 168.3 0-11 / 285.8 0-0 / 15.88 130 58.9 8 16 16 16 16 2 8 8 4 8 1 15 9 7 3 1 1 3 5 5 024 2-1 / 638.2 3-0 / 938.2 1-2 / 369.9 1-4 406.4 1-11 / 595.3 1-5 / 436.6 1-5 / 444.5 1-8 / 511
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II. RIG AND MOUNT UNIT A. Mounting on Ground Mount unit on a solid, level concrete pad. Position unit so water or ice from roof does not fall directly into unit. Field- fabricated stacking kits can be used when units are to be stacked. If conditions or local codes require unit to be fas- tened to a pad, 6 field-supplied tiedown bolts should be used and fastened through slots provided in unit mounting feet. B. Mounting on Roof Mount unit on level platform or frame at least 6 in. above roof surfac
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B. Make Piping Sweat Connections switch, fuses, and field wiring must be in compliance with NEC (U.S.A. Standard) and applicable local codes. Use mini- Remove plastic caps from liquid and suction service valves. mum 60 C wire for field power connection. Use refrigerant grade tubing. Service valves are closed from the factory and ready for brazing. After wrapping the service Route power wires through opening in the unit side panel valve with a wet cloth, the tubing set can be brazed to the and co
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Table 1A — Physical Data (English) UNIT 538J 018 024 030 036 048 060 NOMINAL CAPACITY (Btuh) 18,000 24,000 30,000 36,000 48,000 60,000 UNIT OPERATING WEIGHT (lb) 130 136 161 185 222 249 COMPRESSOR Hermetic Type Copeland Copeland Copeland Copeland Copeland Copeland Scroll Scroll Scroll Scroll Scroll Scroll Model ZR18KC-PFV ZR24KC-PFV ZR28KC-PFV ZR34KC-PFV ZR47KC-PFV ZR57KC-PFV Oil (oz) Initial/Recharge 25/21 25/21 38/34 42/38 42/38 56/52 OUTDOOR FAN Propeller Type, Direct Drive, Horizontal Rpm 85
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LEGEND *The IFR and IFM are located in indoor unit on heating-cooling applications. If accessory IFR is required for cooling-only applications, locate (IFR) in fan coil. C— Contactor (12-va) NOTES: HC — Heating Control 1. Refer to unit wiring label for wire colors: BRN to BLU and C to Y connections. IFM — Indoor-Fan Motor 2. Arrangement A, B and C are for use with residential fan coils. IFR — Indoor-Fan Relay TRANS — Transformer Field Wiring Factory Wiring Fig. 5 — Typical Control Circuit Conne
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Table 2 — American/European Wire Conversions SERVICE AMERICAN EUROPEAN WARNING: Before performing recommended main- Industry American Conversion Industry Standard 2 tenance, be sure unit main power switch is off. Failure to Standard Size (mm) Size (mm ) do so may result in electrical shock or injury from rotat- 18 AWG 0.82 1.0 16 AWG 1.30 1.5 ing fan blade. 14 AWG 2.08 2.5 12 AWG 3.30 4.0 10 AWG 5.25 6.0 I. OUTDOOR FAN 8 AWG 6.36 10.0 A reinforced wire mount holds the outdoor fan assembly in 6
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Table 3 — Electrical Data OPERATIONAL COMPRESSOR POWER SUPPLY VOLTAGE* 538J V-PH-Hz Max Fuse† or HACR-Type Min Max RLA LRA Fan FLA MCA Ckt Bkr Amps 018 10.7 47.0 .70 14.1 25 024 13.2 59.0 .70 17.2 30 030 15.7 73.0 .70 20.3 35 208/230-1-60 187 254 036 15.7 93.0 .70 20.3 35 048 24.3 131.0 .45 31.8 50 060 28.6 170.0 .45 37.2 65 LEGEND 2. All motors and compressors contain internal overload protection. 3. In compliance with NEC (U.S.A. Standard) requirements for multimotor FLA — Full Load Amps and c
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10. If air temperature entering outdoor coil or pressure Table 5A — Required Suction-Tube Temperature (F) — English (Entering Suction Service Valve) at suction valve changes, charge to new suction line temperature indicated on chart. SUCTION PRESSURE AT SERVICE PORT (psig) SUPERHEAT NOTE: The above procedure is independent of indoor air TEMP (F) 61.5 64.2 67.1 70.0 73.0 76.0 79.2 82.4 85.7 quantity. 0 35 36 39 41 43 45 47 49 51 2 37 39 41 43 45 47 49 51 53 B. Subcooling Method (Cooling, TXV) 4 3
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MAINTENANCE Clean coil annually or as required by location and outdoor air conditions. Inspect coil monthly and clean as required. Fins are NOT continuous through coil sections. Dirt and WARNING: Before performing recommended main- debris may pass through the first section, become trapped tenance, be sure unit main power is off. Failure to do so between the rows of fins, and restrict condenser airflow. Use may result in electrical shock or injury from rotating fan a flashlight to determine if d
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TROUBLESHOOTING —11— TROUBLESHOOTING CHART — COOLING CYCLE
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Copyright 2002 Bryant Heating & Cooling Systems Printed in Mexico CATALOG NO. 5353-802
