Page 2 - Step 2 — Rig and Mount the Unit
Table 1A — Physical Data (English) UNIT 38AQS008 60 Hz 50 Hz OPERATING WEIGHT (lb) Aluminum Coils (Standard) 540 594 Copper Coils (Optional) 608 662 RIGGING WEIGHT (lb) Aluminum Coils (Standard) 590 644 Copper Coils (Optional) 658 712 REFRIGERANT* R-22 COMPRESSOR Reciprocating, Semi-Hermetic Quantit...
Page 3 - Step 4 — Make Electrical Connections
Table 2 — Refrigerant Piping Sizes LINEAR LENGTH OF PIPING — ft (m) UNIT 38AQS 0-25 (0-7.6) 25-50 (7.6-15.2) 50-75 (15.2-22.9) 75-100 (22.9-30.5) Line Size (in. OD) L S L S L S L S 008 1 ⁄ 2 1 1 ⁄ 8 5 ⁄ 8 1 1 ⁄ 8 5 ⁄ 8 1 1 ⁄ 8 5 ⁄ 8 1 1 ⁄ 8 LEGEND L — Liquid Line OD — Outside Diameter S — Suction Li...
Page 5 - Fig. 3 — Rigging Label
All field wiring must comply with NEC (U.S.A.) and lo- cal requirements.Install field wiring as follows:1. Install conduit through side panel openings.2. Install power lines to connections as shown in Fig. 8. Wrap connections with electrical tape. Voltage to compressor terminals during operation mus...
Page 6 - NEC —; TXV —
LEGEND NEC — National Electrical Code TXV — Thermostatic Expansion Valve *Accessory item.†Field supplied. NOTES:1. All piping must follow standard refrigerant piping techniques. Re- fer to Carrier System Design Manual for details. 2. All wiring must comply with the applicable local and national code...
Page 7 - Table 4 — Electrical Data
Table 4 — Electrical Data UNIT 38AQS NOMINAL VOLTAGE (V-Ph-Hz) VOLTAGE RANGE COMPRESSOR OFM POWER SUPPLY MINIMUM DISCONNECT Min Max RLA LRA FLA MCA MAX FUSE OR HACR BRKR AMPS FLA LRA 008 208/230-3-60 187 254 31.5 160 3.1 42.5 50 45 177 460-3-60 414 508 15.7 80 1.4 21.0 25 25 89 220-3-50 198 242 39.7...
Page 9 - Fig. 6 — Fusible Plug Locations
2 CORNERPOST RACEWAY THERMOSTATFIELD CONNECTION POWER WIRINGCONNECTIONS Fig. 6 — Fusible Plug Locations LEGEND NOTE: The 8 o’clock position is shown above. Fig. 7 — TXV Sensing Bulb Location TXV — Thermostatic Expansion Valve LEGEND Fig. 8 — 38AQS008 Power Wiring Connections C — Contactor NEC — Nati...
Page 10 - Do not reuse drained oil or use any oil that has been ex-; Refrigerant Service Ports —
START-UP Preliminary Checks 1. Check that all internal wiring connections are tight and that all barriers, covers, and panels are in place. 2. Field electrical power source must agree with unit name- plate rating. 3. Ensure all service valves are open. Ensure all compressor service valves are backse...
Page 12 - Fig. 12 — Cleaning Outdoor Coil
5. Remove crankcase heater from compressor base.6. Remove compressor holddown bolts and lift compres- sor off basepan. 7. Remove compressor from unit.8. Clean system. Add new liquid line filter drier (biflow type). 9. Install new compressor and position in unit. Connect suc- tion and discharge lines...
Page 14 - TXV
TROUBLESHOOTING CHART , COOLING CYCLE LEGEND TXV — Thermostatic Expansion V alve 14
Page 19 - A. Preliminary Information; OUTDOOR UNIT
START-UP CHECKLIST A. Preliminary Information OUTDOOR: MODEL NO. SERIAL NO. INDOOR: AIR HANDLER MANUFACTURER MODEL NO. SERIAL NO. ADDITIONAL ACCESSORIES B. Pre-Start-Up OUTDOOR UNIT IS THERE ANY SHIPPING DAMAGE? (Y/N) IF SO, WHERE: WILL THIS DAMAGE PREVENT UNIT START-UP? (Y/N) CHECK POWER SUPPLY. DO...
Page 20 - COOLING
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. PC 111 Catalog No. 533-887 Printed in U.S.A. Form 38AQS-4SI Pg CL-2 801 6-95 Replaces: 38AQS-3SI Book 1 4 Tab 5a 5a Copyright 1995 Carrier Cor poration -...