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Example Connection of Communication Cable
60 Hz
Power supply
1 Phase
208/230 V
60 Hz
Power supply switch
(Switch)
Power supply
1 Phase
208/230 V
60 Hz
WARNING
!
• Indoor Unit ground Lines are required for preventing electrical shock accident in 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 equip-
ment utilizing the multiple power sources.
SODU
IDU
INTERNET
B
A B
A
B
The GND terminal is a '–' terminal
for the central controller, not Ground Line
Power supply switch
(Switch fuse : ELCB)
DRY1 DRY2 GND 12V
A
3
4
3 Phase 4 Wires Power line(R, S, T, N)
Communication line (3 line): Wired remote control
Single Phase of power supply line(L, N)
Communication line (2 shield line): Between Indoor Unit and Outdoor Unit
Pull Box(Installer Option)
3
4
17
3
4
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