Installation guide

ELECTRICAL WIRING
59
ENGLISH
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 connec-
tion 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.
!
Switch
ELCB
Communication Line
(2 Wires Cable)
Power Line
(3 Wires Cable)
Communication Line
(3 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
ELCB
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
[Outdoor Unit]
[Indoor Units]
Power supply
3 Phase 3 Wires
60Hz 575V
Power supply
1 Phase 60Hz
208/230V
(Main Switch)
Pull box
(Installer option)
Pull box
(Installer option)
Pull box
(Installer option)
HR unit
L(L1) N(L2)
RST
Master
Outdoor Unit
SODU. B SODU. A IDU. B IDU. A CEN. B CEN. A DRY1 DRY2 GND 12V
Between Indoor and Master Outdoor unit
HR unit
A B
3(A) 4(B) 3(A) 4(B) 3(A) 4(B) 3(A) 4(B)
575V
Example Connection of Communication Cable
1 Outdoor Unit-3Ø, 575V