Haier 1U71S2SG1FA Service Manual page 93

• TURN OFF ELECTRIC POWER AT CIRCUIT BREAKER OR POWER SOURCE BEFORE MAKING ANY
ELECTRIC CONNECTIONS.
• GROUND CONN ECTIONS MUST BE COMPLETED BEFORE MAKING LINE VOLTAGE CONNECTIONS.
Precautions for electrical wiring
Electrical wiring work should be conducted only by authorized personnel.
Do not connect more than three wires to the terminal block. Always use round type crimped terminal lugs with
insulated grip on the ends of the wires.
Use copper conductor only.
Selection of size of power supply and interconnecting wires
Select wire sizes and circuit protection from table below. (This table shows 20 m length wires with less than 2%
voltage drop.)
Item
Phase
Model
AD50S2SM1FA
AD71S2SM1FA
The specification of power cable is HO5RN-F3G 4.0mm
The specification of cable between indoor unit to outdoor unit is HO5RN-F4G 2.5mm
POWER SUPPLY & INDOOR-OUTDOOR CONNECTION:
Make wiring to supply power to the outdoor unit, so that the power for the indoor unit is supplied by outdoor unit
terminal blocks.
WIRED CONTROLLER & INDOOR PCB CONNECTION (on for one wiring type):
.
INDOOR UNIT PCB
Note: When do the wired controller & indoor PCB wiring work for model AD50/71S2SM1FA,do not connect
the shielded wired to the unit's shell,do not parallel wiring with strong electric lines within 0.3 meters, please keep
strong lines and the signal lines separately.
DANGER OF BODILY INJURY OR DEATH
Circuit breaker
Switch breaker(A) protector rated
1 40
CN22
A
B
C
WARNING
Power source
Overcurrent
wire size
(minimum)
capacity 2
(mm )
26 4.0
2
90
Earth leakage breaker
Switch Leak
breaker(A) current(mA)
40 30
2
WIRED
CONTROLLER
CON1
A
B
C