LG GHP SUPER - Page 49

ELECTRICAL WIRING
ENGLISH
49
: Transmission cable (3-strand): cable remote control
: Single-phase power cablea
: Transmission cable (2-strand shield cable): Between ODU
: Transmission cable (2-strand shield cable): Between ODU to IDU
* Ground Wiring Diagram is not included.
Master
Branch wire
Power cable wire
Slave
Pull Box
Power supply switch
(Switch / leakage
current circuit breaker)
Single-phase
power system
Single-
phase
power
: Transmission cable (3-strand): cable remote control
: Single-phase power cablea
: Transmission cable (2-strand shield cable): Between ODU
: Transmission cable (2-strand shield cable): Between ODU to IDU
* Ground Wiring Diagram is not included.
Power cable wire
Branch wire
Pull Box
Power supply switch
(Switch / leakage
current circuit breaker)
Master
Slave
Single-phase
power system
Single-
phase
power
Between the IDU to Master ODU
3(A) 4(B) 3(A) 4(B)3(A) 4(B)
CN06-COMM-TB
Dry2 Dry1 CEN IDU ODUGND
BABBA---- A
12 V
• The indoor unit grounding needs the ground wire to prevent the indoor unit short circuit-
ing, to prevent a communication failure due to noise and to prevent a motor current leak-
age. (Not connected to piping)
• For communication cables, grounding should be a single point ground on the outdoor unit.
• Do not install an individual switch or an individual wall outlet which can block the power
supply to each indoor unit connected to the outdoor unit.
WARNING
!