Haier AU55NFIAIA Service Manual page 39

5.12 Electric wiring
Note:
l The air conditioner must use special circuit (over 13A), and wiring by the qualified
electrician according to the wiring rules specified in national standard.
l The grounding wire and the neutral wire shall be strictly separated. Connect the neutral
wire with grounding wire is incorrect.
l The electric leakage breaker must be installed.
l All the electric wire must be copper wire. When wiring, there shall keep a proper distance
between the power line and communication wire to avoid twist together. Otherwise,
signal disturbance will occur, and the air conditioner can not operate normally.
l Power supply: 3PH, 380V~, 50Hz, the power supply connects from the outdoor side.
l The wiring method of power line is Y connection. If the power line is damaged, in order
to avoid risk of electric shock, it must be replaced by the manufacturer or its repair center
or other similar qualified person.
l Specification of wire and short circuit protector in site wiring:
Type Power
Contents line
Specificatio YZW
n
Parameter 5x
4mm2
Note: The signal wire using shielded wire is recommended.
Commercial Air Conditioner
Connection Connection signal wire
wire
YZW
3 x 2 x (0.5~1.5mm2)
(1~1.5mm2)
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Model: AU55NFIAIA
Short
circuit
protector
YZW ----
20A