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Haier AD142ALEAA Operation And Instruction Manual page 19

Haier duct type air conditioner operation & instruction manual
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Installation Manual For Indoor Unit
In order to drain water normally, the drain pipe shall be processed as specified in the installation
manual and shall be thermal insulated to avoid dew generation. Improper hose connection may
cause indoor water leakage.
Requirements
The indoor drain pipe shall be thermal insulated.
The connection part between the drain pipe and the indoor unit shall be insulated so as to
prevent dew generation.
The drain pipe shall be slant downwards (greater than 1/100). The middle part shall not be of
S type elbow, otherwise abnormal sound will be produced.
The horizontal length of the drain pipe shall be less than 20 m. In case of long pipe, supports
shall be provided every 1.5 – 2m to prevent wavy form.
Central piping shall be laid out according to the following figure.
Take care not to apply external force onto the drain pipe connection part.
1.5m~2m
Insulation
(supplied by the user)
To the largest (app. 10cm)
Down slope above 1/100
Pipe and insulation material
Pipe
Rigid PVC pipe VP20 mm (internal diameter)
Insulation
Foamed PE with thickness above 7 mm
Hose
Drain pipe size: (3/4") PVC pipe
The hose is used for adjusting the off-center and angle of the rigid PVC pipe.
Directly stretch the hose to install without making any deformation.
The soft end of the hose must be fastened with a hose clamp.
Please apply the hose on horizontal part
Insulation treatment:
Wrap the hose and its clamp until to the
indoor unit without any clearance with
insulating material, as shown in the figure.
Drain confirmation
During trial run, check that there is no leakage at the pipe connection part during water
draining even in winter.
! Caution
Support
Down slope
above 1/100
VP30
S type elbow
Hose
Subsidiary insulation
18
Wall
Outside
Slant
Drain pipe (supplied
by the user)
Hose clamp
Insulation
Rigid PVC pipe

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