LG LSC121PMA Service Manual - Page 24

3. Connecting The Cable Between Indoor Unit and Outdoor Unit 1) Connection of the cable 1. Remove the cover control from the unit by loosening the 3 screws. 2. Dismount caps on the conduit panel. 3. Temporarily mount the conduit tubes on the conduit panel. 4. Properly connect both the power supply and low voltage lines to the corresponding terminals on the terminal block. 5. Ground the unit in accordance with local codes. 6. Be sure to size each wire allowing several inches longer than the required length for wiring. 7. Use lock nuts to secure the conduit tubes. NOTE Connector trade size for this unit is 1/2". Refer to "How to connect wiring to the terminals" for instructions on connecting depending on the wire type you are using. WARNING • Be sure to comply with local codes while running the wire from the indoor unit to the outdoor unit(size of wire and wiring method, etc). • Every wire must be connected firmly. • No wire should be allowed to touch refrigerant tubing, the compressor or any moving parts. Power Supply Model Power source AWG(MIN.) Fuse or breaker Capacity 9K 1ø, 115V 14 18 15A 12K 1ø, 115V 14 18 20A Wiring Diagram Connecting cable(Low voltage) b Indoor Unit Terminal (4P) 1 2 3 4 Outdoor Unit Terminal (6P) 1 2 3 4 L1* 5 L2 6 G Power supply a To branch circuit * L1 is neutral for 115V models. Ground NOTE 1. shows field wiring. 2. Separately wire the high and low voltage line. 3. Use heat-proof electrical wiring capable of withstanding temperatures up to 167°F. 4. Use outdoor and waterproof connection cable rated more than 300V for the connection between indoor and outdoor unit. (For example, Type SJO-WA) Outdoor unit Terminal block Over 5mm (2") Cover control Conduit panel Connecting cable Power supply cord -24-