Refrigerant Piping - Haier AB072FDAHA Installation Manual

Refrigerant piping

Warning
During installation, if refrigerant gas leakage occurs, ventilation measures must be taken. When
refrigerant gas meets with fire, hazardous gas will be produced.
After installation, make sure that there is no refrigerant leak.
Refrigerant, if meeting with heaters and stoves, etc in the room, may produce hazardous gas.
Allowable tube length and allowable height difference
Different units have different limits. Refer to the attached manual.
Pipe material and size
Air conditioner used deoxidized phos-copper (TP
Material
Model series 072~162 model
Gas side
Pipe size 12.70
( mm )
Liquid side
6.35
Refill refrigerant
Refer to the installation manual for the refilling of refrigerant. A special meter should
be used for the filling of refrigerant and the filling must be in strict accordance with the specifications.
R22:AB072~282FDAHA
R407:AB072~282FDBHA
Requirements:
Overfilling or underfilling may lead to compressor trouble. The filling must be done
in strict accordance with the specifications.
Connection of refrigerant pipes
Connect all refrigerant tubes before connection of the flare tube.
Use two spanners for the indoor connection.
Refer to the following table for the installation torque.
Pipe external
Torque (N-m)
diameter (mm)
11.8(1.2kgf-m)
6.35
9.52 24.5(2.5kgf-m)
12.70 49.0(5.0kgf-m)
78.4(8.0kgf-m)
15.88
98.0(10.0kgf-m)
19.05
8
)
2
series 182~282 model
15.88
9.52
Torque increase (N-m)
13.7(1.4kgf-m)
29.4(3.0kgf-m)
53.9(5.5kgf-m)
98.0(10.0kgf-m)
117.7(12.0kgf-m)
Electrical wiring & Application control
13
remote controller
D