LG multi V ARUN Series Installation Manual page 66

Electrical Wiring
n 2 Outdoor Units - 3Ø, 380V
n When the power source is connected In series between the units.
3 Phase 4 Wires
Power supply
60Hz 380V
(Main Switch)
Power supply
1 Phase 60Hz
220V
L
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
n When the power source is supplied to Each outdoor unit individually.
3 Phase 4 Wires
Power supply
60Hz 380V
(Main Switch)
Power supply
1 Phase 60Hz
220V
L
66 Outdoor Unit
R S T N
Switch
Fuse
N
Power Line
(4 Wires Cable)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Communication Line
(3 Wires Cable)
R S T N
Switch Switch
Fuse Fuse
N
Power Line
Power Line
(4 Wires Cable)
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
[Master] [Slave]
Pull Box Pull Box
(Installer option) (Installer option)
Power Line
(2 Wires Cable)
[Indoor Units]
[Master]
R S T N
Pull Box Pull Box
(Installer option) (Installer option)
Power Line
(2 Wires Cable)
Communication Line
(3 Wires Cable)
[Indoor Units]
Communication Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
[Slave]
Communication Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line Power Line
(2 Wires Cable) (2 Wires Cable)