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Installation Manual 57
ENGLISH
Electrical Wiring
Power supply switch
(Switch fuse : ELCB)
3 Phase 3 Wires Power line(R, S, T)
Communication line (3 line): Wired remote control
Single Phase of power supply line(L(1),L(2))
Communication line (2 shield line):
Between Outdoor Unit and Outdoor Unit
Power supply switch
(Switch)
Master
Slave1
Slave2
Communication line (2 shield line):
Between Indoor Unit and Outdoor Unit
■ When the power source is connected
In series between the units.
(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
3 Phase 3 Wires
Power supply
60Hz 208/230V
Power supply
1 Phase 60Hz
208/230V
Power supply switch
(Switch)
Power supply switch
(Switch fuse : ELCB)
3 Phase 3 Wires
Power supply
60Hz 208/230V
Power supply
1 Phase 60Hz
208/230V
■ When the power source is supplied to
Each outdoor unit individually.
(Main Switch)
Pull Box(Installer Option)
Pull Box(Installer Option)
n 3 Outdoor Units - 3Ø, 208/230V
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.
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