Haier AC142ACBEA Service Manual page 101

2. Installation of outdoor unit
Fix the unit in a proper way according to the condition of a place where it is installed by
referring to the following.
Fig. 22
(a) Concrete foundation(Fig. 22)
Anchor bolt
Note (1)Give enough room for the concrete
foundation to fix anchor bolts.
Install the unit so that the angle of inclination must be less than 3 degrees.
3. Refrigerant piping
(1) Outline of piping
Flare connection
Gas pipe
Indoor
unit
Liquid
pipe
Flare connection
(2) Piping size
9.52x0.8mm
Liquid pipe
Gas pipe
15.88x1.0mm
Install the removed flare nuts to the pipes to
be connected, then flare the pipes.
90 0.5
Unit
Concrete foundation
(3) Limitations for one way piping length and
vertical height difference.
One way piping length: Less than 15 mm
Vertical height difference: Less than 5 m
3-way valve
Precautions for refrigerant piping
Do not twist or crush piping.
Outdoor
unit Be sure that no dust is mixed in piping.
Bend piping with as wide angle as possible.
Keep insulating both gas and liquid piping.
2-way valve
Check flare-connected area for gas leakage.
(4) Piping connection (Fig.23)
Connecting method
Apply refrigerant oil at half union as large and flare nut.
To bend a pipe, give the roundness as possible not to
crush the pipe.
When connecting pipe, hold the pipe centre to centre
then screw nut on by hand, refer to Fig.
Be careful not to let foreign matters, such as sands
enter the pipe.
Forced fastening without
centering may damage
the threads and cause a
gas leakage.
(b) Foundation anchor
Unit
Concrete foundation
Anchor bolt
Note (1)Place the concrete foundation
deep enough.
Pipe dia
Liquid pipe 9.52mm
Gas pipe 15.88mm
(Fig. 23)
Fastening
torque
42N . m
60N . m