LG ARWB80LA2 - 3 Outside Unit Connections (60 Hz)

54 Outside Unit
Electrical Wiring
Power supply switch
(Switch fuse : ELCB)
3 Phase 4 Wires Power line(R, S, T, N)
Transmission line (3 line): Wired remote control
Single Phase of power supply line(L,N)
Transmission line (2 shield line):
Between Outdoor Unit and Outdoor Unit
Power supply switch
(Switch)
Power supply switch
(Switch)
3 Phase 4 Wires
Power supply
60Hz 380V
Power supply
1 Phase 60Hz
220V
Master
Slave2
Slave1
Transmission line (2 shield line):
Between Indoor Unit and Outdoor Unit
Power supply switch
(Switch fuse : ELCB)
3 Phase 4 Wires
Power supply
60Hz 380V
Power supply
1 Phase 60Hz
220V
■ When the power source is supplied to
Each outdoor unit individually.
■ When the power source is connected
In series between the units.
(Main Switch)
(Main Switch)
The GND terminal is a '–' terminal for the
central controller, not Ground Line
Between Indoor and Master Outdoor unit
Slave1
Outdoor unit
Master
Outdoor unit
Slave2
Outdoor unit
IDUSODU DRY1 DRY2 GND INTERNET
BA
12V
IDUSODU DRY1 DRY2 GND INTERNET
BA
12V
IDUSODU DRY1 DRY2 GND INTERNET
BA
12V
IDUSODU DRY1 DRY2 GND INTERNET
B
B
B
B
BA
A
A
A
A
12V
Master
Outdoor unit
Pull Box(Installer option)
Pull Box(Installer option)
HR unit
HR unit
HR unit
HR unit
HR unit
◆ Example Connection of Transmission Cable
3 Outside Units
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 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.