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54 Outside Unit
Electrical Wiring
Power supply switch
(Switch fuse : ELCB)
Power supply switch
(Switch)
Power supply switch
(Switch)
3 Phase 3 Wires Power line(L1, L2, L3)
Transmission line (3 line): Wired remote control
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
3 Phase 3 Wires
Power supply
60Hz 208/230V
Power supply
1 Phase 60Hz
208/230V
The GND terminal is a '–' terminal for the central controller, not Ground Line
• Make sure that terminal number of master and slave outside unit are matched.(A-A,B-B)
Slave
Master
Between Indoor and Master Outside unit
Slave
Outside
unit
Power supply switch
(Switch fuse : ELCB)
■ When the power source is supplied to
Each outside unit individually.
3 Phase 3 Wires
Power supply
60Hz 208/230V
Power supply
1 Phase 60Hz
208/230V
■ When the power source is connected
In series between the units.
(Main Switch)
(Main Switch)
IDUSODU DRY1 DRY2 GND
INTERNET
BA
12V
Master
Outside
unit
IDUSODU DRY1 DRY2 GND
INTERNET
BA
12V
IDUSODU DRY1 DRY2 GND
INTERNET
B
B
B
BA
A
A
A
12V
Master
Outside
unit
Pull Box(Installer option)
Pull Box(Installer option)
◆ 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.
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