Page 4 - Table 2 — Weight Distribution; Step 2 — Rig and Mount the Unit; Table 3A — Refrigerant Piping Sizes — 60 Hz; Table 3B — Refrigerant Piping Sizes — 50 Hz
CONSIDER SYSTEM REQUIREMENTS• Consult local building codes and NEC for special instal- lation requirements. • Allow sufficient space for airflow clearance, wiring, refrigerant piping, and unit servicing. See Fig. 2. • Locate unit so that condenser airflow is unrestricted on all sides and above. Refe...
Page 5 - Fig. 3 — Rigging Label
UNIT 38 DIM. A DIM. B DIM. C DIM. D DIM. E DIM. F AK007 1 8 -6 1 ⁄ 2 9 1 8 -2 3 ⁄ 4 9 — 1 8 -2 1 ⁄ 4 9 1 8 -4 5 ⁄ 16 9 2 8 -9 5 ⁄ 16 9 [470.0] [375.0] — [362] [415] [846.5] AK008 1 8 -8 9 1 8 -6 1 ⁄ 2 9 — 1 8 -3 9 2 8 - 5 ⁄ 16 9 3 8 -5 7 ⁄ 16 9 [508.0] [470.0] — [381] [613] [1052.5] AK012 1 8 -9 9 1...
Page 6 - Step 4 — Make Electrical Connections; Fig. 5 — Power Wiring Connections
FILTER DRIER AND MOISTURE INDICATOR — The fil-ter drier is factory installed. Moisture indicator is field-supplied and should be installed just after liquid line shutoffvalve. Do not use a receiver; there is none provided withunit and one should not be used.NOTE: Unit is shipped with R-22 holding ch...
Page 7 - Table 5 — Electrical Data; not
Table 5 — Electrical Data UNIT 38 NOMINAL VOLTAGE (V-Ph-Hz) VOLTAGE RANGE COMPRESSOR OFM POWER SUPPLY MIN MAX RLA LRA FLA MCA MOCP AK007 208/230-3-60 187 254 21.8 142 1.9 25.6 35 460-3-60 414 508 9.6 72 1.0 12.9 15 575-3-60 518 632 7.6 58 1.9 11.4 15 220-3-50 198 242 19.0 142 1.0 25.6 35 400-3-50 36...
Page 8 - Fig. 7 — Field Control Wiring Raceway
FIELD CONTROL WIRING — Install a Carrier-approvedaccessory thermostat assembly according to installationinstructions included with the accessory. Locate thermostatassembly on a solid wall in the conditioned space to senseaverage temperature in accordance with thermostat instal-lation instructions. R...
Page 9 - Fig. 8A — Cooling Charging Chart — 38AK007
START-UP Preliminary Checks 1. Field electrical power source must agree with unit name- plate rating. 2. Check that all internal wiring connections are tight and that all barriers, covers, and panels are in place. 3. Ensure all service valves are open. On 38AKS units, be sure all compressor service ...
Page 11 - Fig. 11 — Propping Up Top Panel; UNIT; Fig. 10 — Cleaning Condenser Coil
SERVICE When servicing unit, shut off all electrical power to theunit to avoid shock hazard or injury from rotating parts. Cleaning — Inspect unit interior at the beginning of each cooling season and as operating conditions require.CONDENSER COIL — Inspect coil monthly. Clean con-denser coil annuall...
Page 12 - Fig. 14 — Compressor Capacity Control Unloader
4. Adjust fan height as shown in Fig. 13.5. Tighten setscrews.6. Replace condenser-fan assembly. Capacity Control — Unit 38AKS012 Only — A suction pressure-actuated unloader controls 2 cylinders andprovides capacity control. Unloaders are factory set (seeTable 1A or 1B), but may be field adjusted as...
Page 13 - TROUBLESHOOTING GUIDE; SYMPTOM
TROUBLESHOOTING GUIDE SYMPTOM CAUSE REMEDY Compressor does not run —Contactor open Power off. Restore power. Fuses blown. Replace with correct fuses after finding causeand correcting. Transformer open/shorted. Replace transformer if primary windings arereceiving power and no output. Thermostat circu...
Page 14 - LEGEND AND NOTES FOR FIG. 15 AND 16; Fig. 15 — Typical 38AK Component Arrangement
LEGEND AND NOTES FOR FIG. 15 AND 16 C — Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CH — Crankcase Heater CLO — Compressor Lockout COMP — Compressor MotorCOTP — Compressor Temperature Protection EQUIP — EquipmentGND — Ground HPS — High-Pressure Switch LPS — Low-Pressure Switch NEC — N...
Page 15 - A. Preliminary Information; INDOOR: AIR HANDLER MANUFACTURER
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 16 - CHECK VOLTAGE IMBALANCE
CHECK VOLTAGE IMBALANCE LINE-TO-LINE VOLTS: AB V AC V BC V (AB + AC + BC)/3 = AVERAGE VOLTAGE = V MAXIMUM DEVIATION FROM AVERAGE VOLTAGE = V VOLTAGE IMBALANCE = 100 X (MAX DEVIATION)/(AVERAGE VOLTAGE) = % IF OVER 2% VOLTAGE IMBALANCE, DO NOT ATTEMPT TO START SYSTEM! CALL LOCAL POWER COMPANY FOR ASSI...