ELECTRICAL WIRING
53
ENGLISH
Field Wiring
Communication cable
(2-wire Cable)
Communication cable
(3-wire Cable)
Power cable
(2-wire Cable)
Power cable
(2-wire Cable)
Power cable
(2-wire Cable)
Power cable
(2-wire Cable)
[Outdoor Unit]
[Indoor Units]
Pull Box
(Installer option)
Pull Box
(Installer option)
Pull Box
(Installer option)
Pull Box
(Installer option)
L
N
Power Line
(3 Wires Cable)
Power Line
(2 Wires Cable)
Power supply
3 Phase 3 Wires
Power supply
1Phase 2Wires
(Main Switch)
R S T
Switch
ELCB
ELCB
34 34 34
Outdoor Unit
SODU B SODU A IDU B IDU A INT B INT A
Between Indoor and Outdoor unit
The GND terminal at the main PCB is a ‘-’ ter-
minal for day contact, it is not the point to
make ground connection.
WARNING
• Indoor Unit ground wires 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.
!
1,MFL67798027,영영 2018. 6. 18. 영영 3:07 Page 53
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