Haier AH1-070B Manual page 28

Notes:
(1) The above wiring example is only for reference. The number of connection kits and indoor units shall be subject
to the field installation.
(2) Two-core non-polar communication line with shield shall be adopted for communication lines between the
connection kit and the indoor/outdoor unit. The size for indoor unit and connection kit is H05RN-F4G 2.5mm
(3) All connection kites within one system may share one over current breaker for power supply. But it's necessary
to compute total current capacity specification.
(4) For wiring harness connected to the power terminal block, the terminal shall be pressed with a round (refer to
the following figure).
Round. Press the terminal
1) The power terminal block shall not be crimped with 2 wires of different diameters. Otherwise, poor crimp
connection and looseness may lead to abnormal heating or sparking of the line.
2) Refer to the following figure for crimping wires with the same diameter.
Connect wires with the same
diameter on both sides
(5) Tighten terminal screws with proper screw driver. Screw driver of small dimension will damage the screw head
and fail to tighten properly.
(6) If terminal screws are tightened excessively, they may be damaged. Refer to the following table for tightening
torques of terminal screws:
Dimension of terminal screw
M3.5 (terminal block for communication line)
M4 (terminal block for power line)
M4 (terminal block for ground wire)
(7) Power line is forbidden to the communication terminal block because it will damage the circuit control board.
(8) Wiring of communication lines shall be within the following scope. Exceeding the limit will possibly lead to
abnormal communication.
1) The maximum wiring length between the outdoor machine and the valve cage, the valve cage and the
indoor machine, and between valve cages is 1000 m at most. The total wiring length is 1000m at most.
The maximum branch number is 16.
2) The maximum wiring length between the valve cage and the wire controller for switching working modes is
500 m at most.
Insulating sleeve
It's forbidden to connect two
wires on one side
Tightening torque (N.m)
0.80~0.96
1.18~1.44
1.52~1.86
26
Wire
Wires with different diameters
are not allowed