LG MULTI V Installation Manual page 67

n 3 Outdoor Units - 3Ø, 460V
■ When the power source is connected in series between the units.
Power supply
3 Phase 3 Wires
60Hz 460V
(Main Switch)
Switch
ELCB
Power supply
1 Phase 60Hz
220~240V
L N
(3 Wires Cable)
ELCB Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
■ Be sure that the power source is supplied to Each outdoor unit individually.
Power supply
3 Phase 3 Wires
60Hz 460V
(Main Switch)
Switch
ELCB
Power supply
1 Phase 60Hz
220~240V
L N
ELCB Power Line
(2 Wires Cable)
(3 Wires Cable)
Note
1) Field Wiring diagram is to be used as a guideline only. Wiring should comply with applicable local and national codes
2) ELCB must have function to prevent electrical short and over current at the same time .
3) Use copper wires only.
4) Unit must be grounded in compliance with the applicable local and national codes.
5) ELCB and fuse/breaker must install to the power line
[Master]
R S T
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 R S T
Switch Switch
ELCB ELCB
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)
[Slave1] [Slave2]
Power Line
(2 Wires Cable)
[Master] [Slave1]
R S T
Pull Box
(Installer option)
Power Line Power Line
(2 Wires Cable) (2 Wires Cable)
[Indoor Units]
Electrical Wiring
Communication Line
(2 Wires Cable)
[Slave2]
Communication Line
(2 Wires Cable)
Installation Manual 67