Special Work And Main Points In Installation; Checks After The Installation - Haier AB242ACBEA Service Manual

5.3 Special Work and Main Points in Installation

· During installation, if refrigerant leakage occurs,
take ventilation measurement immediately.
· As soon as the leaked refrigerant gas meets fire,
poisonous gas will generate.
A. Choosing of pipes
According to the following indoor unit and unit installation diagram to choose the material and size of
pipes and branch pipes.
B. Connection of pipes
1. Method of pipe connection
·The pipe shall be as short as possible to guarantee efficiency
·Daub the refrigerant oil on the connection and flare nut
· When bending the pipes, give the roundness as large as possible, to avoid crashing the pipes
·To connect the pipe, fit the center and screw the nut with hand, the use spanner or torque
wrench to tighten it. The fastening torque showed in below table, and shown in figure.
·Be careful alien matter, such as sands, water etc. shall not enter the pipes. Forced fastening
without careful centering may damage the threads and cause gas leakage
2. Welding of pipes
·In welding, the nitrogen shall be used to avoid oxidation of the pipe inner part.
·The refrigerating pipe shall use clean new pipes. When working, it shall take steps to prevent
water and dust from entering.
· When loosening and tightening the nuts, two spanners shall be used. If using one spanner, it can
not reach the desired degree of tightness.
Using the specified fastening torque to fasten nuts.
Pipe diameter (mm)
Φ6.35
Φ9.52
Φ1 2.7
Φ15.88

5 Checks after the installation

After the installation, please to check the connection of wire:
If the wire have the same diameter in the two sides of the terminal
If the wire placed on both the side of terminal but one side
To see the follow figure:
Ο means the right connection
Warning
·After finishing installation, confirm the refrigerant
gas dose not leak.
·If the refrigerant gas leaks in the room, once it
meets heater, burner and gas stove etc. fire
source, the poisonous gas will generate.
Installation torque(N.M.)
11.8(1.20kgf.m)
24.5(2.50kgf.m)
49.0(5.0kgf.m)
78.4(8.0kgf.m)
× means wrong
Fastening torque (N.M.)
13.7(1.4kgf.m)
29.4(3.0kgf.m)
53.9(5.5kgf.m)
98.0(10.0 kgf.m)