Carrier 53QG18-H Installation Manual

39LEGENDEarthL Live power supply.N Neutral power supply.R Live connection indoor/outdoor unit.C Neutral connection indoor/outdoor unit.Y Compressor control.O Reversing valve control.W2 Outdoor fan motor control.S Outdoor coil sensor.LEGENDEarthL Live power supply.N Neutral power supply.R Live connection indoor/outdoor unit.C Neutral connection indoor/outdoor unit.Y Compressor control.CONNECTING ELECTRICAL WIRING (Cont.)17-4 CONNECTING ELECTRICAL WIRING FOR HEAT PUMP SYSTEMSizes of electrical wiresR C Y O W2 S L N1 mm 2 1 mm 2 1 mm 2 1 mm 2 1 mm 2 1 mm 2 4 mm 2 4 mm 217-5 CONNECTING ELECTRICAL WIRING FOR COOL ONLY SYSTEMSizes of electrical wiresR C Y L N1 mm 2 1 mm 2 1 mm 2 4 mm 2 4 mm 2Note: (1) Connect the power supply to the outdoor unit and then get the power requiredfor the indoor unit from the outdoor unit.(2) All dotted lines to be fitted by installer.(3) Refer to wiring diagrams and stickers-caution sticked inside the outdoor & indoor units.220-240V ~ 50HzCircuitBreakerMainSwitch220-240V ~ 50HzCircuitBreakerMainSwitchIndoorUnitOutdoorUnitIndoorUnitOutdoorUnitR C YR C Y