LG ARUN80LN3 Installation Manual page 68

Electrical Wiring
■ 3 Outdoor Units - 3Ø, 380V
■ When the power source is connected In series between the units.
3 Phase 4 Wires
Power supply
60Hz 380V
(Main Switch)
Switch
Fuse
Power supply
1 Phase 60Hz
220V
N
L
(4 Wires Cable)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
■ When the power source is supplied to Each outdoor unit individually.
3 Phase 4 Wires
Power supply
60Hz 380V
(Main Switch)
Switch
Fuse
Power supply
1 Phase 60Hz
220V
N
L
Power Line
(2 Wires Cable)
Power Line
(4 Wires Cable)
68 Outdoor Unit
[Master]
R S T N
Power Line
Pull Box Pull Box
(Installer option) (Installer option)
Power Line Power Line
(2 Wires Cable) (2 Wires Cable)
Communication Line
(3 Wires Cable)
[Indoor Units]
R S T N R S T N
Switch Switch
Fuse
Pull Box Pull Box
(Installer option) (Installer option)
Power Line Power Line
(2 Wires Cable) (2 Wires Cable)
Communication Line
(3 Wires Cable)
[Slave1] [Slave2]
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
[Master]
R S T N
Fuse
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
[Indoor Units]
Communication Line
(2 Wires Cable)
[Slave1] [Slave2]
Communication Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)