Haier AU282FHAHA Service Manual page 19

Installation procedure
3.Method of cutting and flaring pipe
Cutting and flaring pipe
If using pipe cutter, the burs must be removed.
After inserting flaring machine, flare pipe nozzle to be bell-mouthed.
When using branch pipes, do installation work in the directions
shown in the below figures.
Correct
Slant
Break
When using branch pipe, please install it as shown in the following Fig.
Or
Wrong
Vertical direction
Cutting part of branch pipe
Cut the connection part off centrally, and remove the burs.
Cut off in middle
For the cutting of branch pipes, it is necessary to use micro-cutter.
Heating insulation of pipes
Insulation of branch pipe part;after connection the attached heat insulation materials of the
branch pipe with the site pipes, bind them properly.
Band properly with tape
Insulating material
(Arranged in site)
When joint connecting, no gap shall
be left in the joint, the insulating
material shall be overlapped.
Connecting pipe in site
Insulating material
Commercial Air Conditioner
A
Uncorrect
Crack Partial Too outside
Correct
Horizontal direction
Insulating material
(Arranged in site)
Branch pipe
150
Insulating material
Insulating material (arranged in site)
Thickness: Over 10mm
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Model: AU282FHAHA
Connection of pipe
Diameter of pipe
6.35mm(1/4")
Flarer
9.52mm(3/8")
12.70mm(1/2")
15.88mm(3/4")
Flow direction
Flow direction
of refrigerant
of refrigerant
Wrong
Correct
Connecting direction
Dimension
(mm)
A
0.8~1.5
2.2~2.6