LG Multi V CRUN Series Service Manual page 200

Installation
Example connection of transmission wire
Power supply
1 phase 50Hz
220~240V
Outdoor Unit Control Box
TB6
Central controller Indoor unit
D C Vcc GND A
200 Outdoor Unit
Power supply switch
(Switch/Fuse)
Power supply
3 phase 50Hz
380~415V
B
3 4
: 3 Phase power line
: Single phase power line
: Transmission line(2 wire)
3 4 3 4