Haier Smart Power Series Service Manual page 56

Installing Drain Pipes
CAUTION
Install the drain pipe in accordance with the instructions in this
installation Manual and keep the area warm enough to prevent
condensation.Problems with the piping may lead to water
leaks.
Be sure to properly insulate the drain pipes.
The position of the installed drain pipe should have a
downward gradient of 1/100 or more.
Do not connect the drain pipe in which ammonia or other types
of gas affecting the unit is generated.
Install the drain pipes according to the measurements
given in the following figure.
Flange positions for connecting the drain pipes.
The size of drain opening
Unit model The size of drain opening
ADH071M1ERG
ADH071M3ERG
ADH090M1ERG
ADH105M1ERG
ADH125M1ERG
ADH140M1ERG
Please refer to the diagram and select drain pipe size
according to drain opening inner diameter size.
(a) Drain piping should always be in a downhill grade
(1/50~1/100) and avoid riding across an elevation or
making traps.
φ32mm(O.D.)
(b) When connecting the drain pipe to unit, pay
sufficient attention not to apply excess force to the
piping on the unit side. Also, fix the piping at a point as
close as possible to the unit.
(c) For unit without water pump, the drain pipe shall be
slant downwards (greater than 1/100).
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 right
figure.
Take care not to apply external force onto the drain
pipe connection part.
(d) For unit with water pump drain pipe use hard PVC
general purpose pipe VP which can be purchased
locally. When connecting, insert a PVC pipe end
securely into the drain socket before tightening
securely using the attached drain hose and clamp.
Adhesive must not be used for connection of the drain
socket and drain hose (accessory).
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Smart Power