Haier 1U71S2SG1FA Service Manual page 100

• Turn off electric power at circuit breaker or power source before making any electric connections.
• Ground connections 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 20m length wires with less than 2%
voltage drop.)
Model
AD35S2SM3FA AD35S2SM4FA
AD50S2SM3FA AD50S2SM4FA
AD71S2SM3FA AD71S2SM4FA
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 (One for one wiring type):
.
INDOOR UNIT PCB
CN22
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.
WARNING
Danger of bodily injury or death
Item
Circuit breaker
Phase
Switch Breaker
(A)
1 40
A
B
C
Power Source
Wire Size
Overcurrent
(Minimum)
Protector
(mm
Rated
Capacity (A)
26 4.0
WIRED
CONTROLLER
A
CON1
B
C
97
Earth Leakage Breaker
Leak
Switch
2
) Current
Breaker (A)
(mA)
40 30