LG ARWB80LA2 - 2 Outside Unit Connections (50 Hz)

50 Outside Unit
Electrical Wiring
Power supply switch
(Switch fuse : ELCB)
Power supply switch
(Switch)
Power supply switch
(Switch)
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
Transmission line (2 shield line):
Between Indoor Unit and Outdoor Unit
3 Phase 4 Wires
Power supply
50Hz 380~415V
Power supply
1 Phase 50Hz
220~240V
The GND terminal is a '–' terminal for the central controller, not Ground Line
• Make sure that terminal number of master and slave outdoor units are matched.(A-A,B-B)
Slave
Master
Between Indoor and Master Outdoor unit
Slave
Outdoor unit
Power supply switch
(Switch fuse : ELCB)
■ When the power source is supplied to
Each outdoor unit individually.
3 Phase 4 Wires
Power supply
50Hz 380~415V
Power supply
1 Phase 50Hz
220~240V
■ When the power source is connected
In series between the units.
(Main Switch)
(Main Switch)
IDUSODU DRY1 DRY2 GND INTERNET
BA
12V
IDUSODU DRY1 DRY2 GND INTERNET
BA
12V
IDUSODU DRY1 DRY2 GND INTERNET
B
B
B
BA
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
Master
Outdoor unit
◆ Example Connection of Transmission Cable
2 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 prod-
uct is operating, attach a reversed phase protection circuit locally.
Running the product in reversed phase may break the compressor and other parts.