LG MULTI V S 0CVM0-05A Engineering Product Data Book page 101

MULTI V S
Outdoor Unit
11. Field Wiring
11.2 50Hz/60Hz (3Ø)
■ Example Connection of Communication Cable
 Single Outdoor Unit
Outdoor
Power supply
(3Ø 4-wire)
(Main Switch)
Indoor
Power supply
(1Ø 2-wire)
L N
Pull Box
(Installer option)
Power cable
(2-wire Cable)
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.
96
[Outdoor Unit]
R S T N
Switch
Fuse
Power cable
(4-wire Cable)
Power cable
(2-wire Cable)
Pull Box
(Installer option)
Power cable
(2-wire Cable)
Communication cable
(3-wire Cable)
Between Indoor and Master Outdoor unit
SODU.B SODU.A IDU.B IDU.A
3 4 3
The GND terminal at the main PCB is a '-' terminal for day contact,
it is not the point to make ground connection.
Communication cable
(2-wire Cable)
Pull Box Pull Box
(Installer option) (Installer option)
Power cable Power cable
(2-wire Cable) (2-wire Cable)
[Indoor Units]
CEN.B CEN.A DRY1 DRY2 GND
4 3 4
Product Data
Voltage range(V)
Frequency
Outdoor Indoor
50Hz 380-415V 220-240V
60Hz 380V 220V
Master
12V
Outdoor Unit