Field Wiring - LG B62AWYN9L6 Installation Manual

Field Wiring

u Example Connection of Communication wiring cable
Indoor Unit 50Hz, 1Ø, 220-240V
Outdoor Unit 50Hz, 3Ø, 380-415V
Power supply
3Phase 4Wires
50Hz 380-415V
(Main Switch)
Power supply
1 Phase 50Hz
220-240V
Circuit
Breaker
15A
N
L
! !
WARNING WARNING
• Indoor Unit ground Lines are required for preventing electrical shock accident during cur-
rent leakage, Communication disorder by noise effect and motor current leakage (without
connection to pipe).
• Install the electronic wiring cable like <Figure 1>
• Use a recognized circuit breaker between the power source and the Unit.
• Capacity of circuit breaker recommended by authorized personnel only
• 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 local-
ly. Running the product in reversed phase may break the compressor and other parts.
The GND terminal at the main PCB is a '-' terminal for dry contact, it is not the point to make
ground connection.
Circuit
Breaker
30A
R S T N
Switch
Fuse
Power Line
(5 Wires Cable)
Power Line
(3 Wires Cable)
[Indoor Units]
<Figure 1>
[Outdoor Unit]
Communication Line
(3 Wires Cable)
WIRING
39
Communication Line
(4 Wires Cable)