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Power wiring diagram
3 phase 3wires 208-230V
Main unit
Sub unit
Communication
cable (Outdoor unit ~
Outdoor unit)
Main unit Sub unit 1 Sub unit 2
Single phase 2
wires 208-230V
Communication
cable (Outdoor unit ~
Indoor unit)
Grounding Grounding Grounding
Wired remote
controller
Wired
remote
controller
Wired
remote
controller
or
ELCB
MCCB+
ELB
or
ELCB
MCCB+
ELB
or
ELCB
MCCB+
ELB
MCCB +
ELB
or
ELCB
Communication
cable (Outdoor unit ~
Indoor unit)
Communication
cable (Outdoor unit ~
Outdoor unit)
f Connect a power cable of the outdoor unit after checking that R-S-T (3 phase 3 wire) is properly connected.
f Malfunction may occur if one or more of the wires among R-S-T phases (3 Phases-3 Wires) are not connected properly.
(*Malfunction: Turning on/off, occurrence of error, consecutive reset)
f Communication cable between indoor and outdoor units and communication cable between outdoor units has no
polarity.
f Arrange the cables with a cable tie.
❋ ELCB and ELB must be installed since there is risk of electric shock or fire when they are not installed.
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