LG Multi V Space ARUV Series Installation Manual page 40

Electrical Wiring
1. 50Hz
u Example Connection of Communication Cable
n 1 Outdoor Unit-1Ø, 220-240V
1 Phase 2 Wires
Power supply
50Hz 220-240V
(Main Switch)
Switch
Fuse
Power supply
1 Phase 50Hz
220-240V
N
L
Power Line
(4 Wires Cable)
Power Line
(2 Wires Cable)
Pull Box Pull Box
(Installer option) (Installer option)
Power Line
(2 Wires Cable)
WARNING
• Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage,
Communication 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.
• Install the main switch that can interrupt all the power sources in an integrated manner because this
system consists of the equipment utilizing the multiple power sources.
• If there exists the possibility of reversed phase, lose phase, momentary blackout or the power goes on
and off while the product is operating, attach a reversed phase protection circuit locally.
Running the product in reversed phase may break the compressor and other parts.
Between Indoor and Outdoor unit
SODU IDU
A
B A B
3 4
The GND terminal at the main PCB is a '-' terminal for day
contact, it is not the point to make ground connection.
40 Outdoor Unit
[Outdoor Unit]
L N
Pull Box
(Installer option)
Power Line Power Line
(2 Wires Cable) (2 Wires Cable)
Communication Line
(3 Wires Cable)
[Indoor Units]
INTERNET DRY1 DRY2 GND 12V
B A
3 4 3
Communication Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Outdoor Unit
4