LG MULTI V ARWN80LA2 Product Data page 25

2 Outside Units - 3Ø, 380 - 415V
When the power source is connected
In series between the units.
3 phase 4 wires
Power supply
50Hz 380 - 415V
(Main Switch)
Power supply switch
Power supply
1 Phase 50Hz
220 - 240V
When the power source is supplied to
Each Outside unit individually.
3 Phase 4 Wires
Power supply
50Hz 380 - 415V
(Main Switch)
Power supply
1 Phase 50Hz
220 - 240V
WARNING
• Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage,
Transmission 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 equip-
ment 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 Master Outside unit
SODU IDU INTERNET
B A B
The GND terminal is a '–' terminal for the central controller, not Ground Line
• Make sure that terminal number of master and slave Outside units are matched.(A-A,B-B)
13
13
Power supply switch
(Switch fuse : ELCB)
(Switch)
Power supply switch
(Switch fuse : ELCB)
Power supply switch
(Switch)
DRY1 DRY2 GND 12V Master
Outside unit
A
Master
3 phase 4 wires Power line(R, S, T, N)
Transmission line (3 line): Wired remote control
Slave
Single Phase of power supply line (L, N)
Transmission line (2 shield line):
Between Outside Unit and Outside Unit
Transmission line (2 shield line):
Between Indoor Unit and Outside Unit
Pull box(installer option)
Pull box(installer option)
SODU IDU INTERNET DRY1 DRY2 GND
B A B A
SODU IDU INTERNET DRY1 DRY2 GND
B A B A
12V Master
Outside unit
12V
Slave
Outside unit
Outside Units