LG HN1639HC NK0 Installation Manual

57
ELECTRICAL WIRING
ENGLISH
3 Phase(Ø)
Communication cable
Power supply indoor unit
Power supply Backup heater and Boost heater (optional)
A
(28)
TB4
B
(29)
IDU B IDU A
Main PCB terminal
block at outdoor unit
External power supply
(same dedicated power
supply for the indoor unit
and outdoor unit)
N
L
S
T
R
PE
PE
1(R) 2(S) 3(T) 6(N) 5(L)
TB5
External power supply
(same dedicated power
supply for the indoor unit
and outdoor unit)
18 (L) 19 (N)
TB1
N
L
PE
CAUTION
!
You should separate the communication
wiring, in case of communication wiring
length is over 40 m.
LN
Separation
Power Supply Communication Wiring
AB
Shield
cable

LG HN1639HC NK0 Specifications

General

Brand	LG
Model	HN1639HC NK0
Category	Heat Pump
Language	English