Haier AU282AHBEA Service Manual page 180

2. Piping connection of indoor unit
Arrangement of piping and drainage pipe
Cut away, with a hammer or a saw, the lid for piping according to piping direction.
Insulation material
Copper tube
According to the piping method, connect the piping on indoor unit with union of connecting pipe.
Arrange the piping as per the wall hole and bind drain hose connecting electric cable and piping together
with polyethylene tape.
Insert the bound piping connecting electric cable and drain hose through wall hole to connect with outdoor
unit.
Arrangement of drain hose
Drain hose shall be placed in under place.
There should be a slope when arrange drain hose. Avoid up and down waves in drain hose.
Indoor unit
Slope
If humidity is high, drain pipe( especially in room and indoor unit ) must be covered with insulation
material.
Main points of installation refrigerant pipe
Please install the gas pipe and liquid pipe according to the following shown method.
Please remove the cover piece on the gas pipe and the screw cap on the liquid pipe.
Forced fastening without centering may
damage the threads and cause a gas leakage.
Pipe diameter
Liquid pipe 12.7mm(3/8")
After opening inlet grill, you will see a control box as shown in the Fig.
Remove the cover before working.
Drain hose
Connecting electric cable
for indoor and outdoor unit
Good
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Fastening torque
42N . m
Up
Down
-180-
Bad