LG MULTI V PLUS LRUV Series Installation Manual page 59

N Example Connection of Transmission Cable
2 Outdoor Units
*Power supply
Pull Box
*Power supply
WARNING
• Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage,
Transmission disorder by noise effect and motor current leakage (without connection to pipe).
• Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately from the
power supply.
Between Indoor and Main Outdoor unit
Indoor Outdoor
Unit Unit
The GND terminal is a '–' terminal for the central controller, not Ground Line
*Power supply
Model Name
LRU * * * * 8T1
LRU * * * * 9T1
LRU * * * * BT1
Power supply switch
(Switch fuse)
Central
Controller
Main
Outdoor Unit
Outdoor
50Hz, 380 ~ 415V
3 Phase 4 wire power line
60Hz, 380V
3 Phase 4 wire power line
60Hz, 220V
3 Phase 3 wire power line
3 Phase Power line
Transmission line (3 line): Wired remote control
Single Phase of power supply line
Transmission line (2 shield line):
Between Outdoor Unit and Outdoor Unit
Transmission line (2 shield line):
Between Indoor Unit and Outdoor Unit
Main Power supply Line
Between Main Outdoor and Sub Outdoor unit
Indoor Outdoor Central
Unit Unit Controller
Sub
Outdoor Unit
50Hz, 220 ~240V
Single phase power line
60Hz, 220V
Single phase power line
60Hz, 220V
Single phase power line
Electrical Wiring
Branch Line
Main
Outdoor
Unit
Indoor
Installation Manual 59