Drain Pipe
CAUTION
Installing Drain Pipes
Good piping
1.5m ~ 2m
Suspension
bolts
Heat
insulation
A downhill grade
of 1/100 or more
(a) Drain piping should always be in a downhill grade
(1/50~1/100) and avoid riding across an elevation or making
traps.
(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.
Do not pipe under water
Keep free from traps
Avoid riding across an elevation
Air vent
Improper piping
(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).
Drain hose
Stage
difference
part
Drain socket
Drain socket
Main unit
VP(field purchased)
Pipe cover(large)
[for insulation]
(accessory)
VP(field purchased)
Pipe cover
[for insulation]
(field purchased)
Drain hose
(accessory)
Pipe cover(small)
[for insulation]
(accessory)
Clamp
(accessory)
Adhesion
Installation Procedure
18
Unit model
The size of drain opening
32mm(O.D.)
25mm(O.D.)
The size of drain opening
For unit without water pump
1.5m~2m
Support
Insulation (supplied by the user)
Down slope above 1/100
ADH071M1ERG
ADH071M3ERG
ADH090M1ERG
ADH105M1ERG
ADH125M1ERG
ADH140M1ERG
ADH105H1ERG
ADH125H1ERG
ADH140H1ERG
ADH160H1ERG
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.
395
407
66
130
Safety drain port
25(O.D.)
Main drain port
25(O.D.)
Flange positions for connecting the drain pipes.
Please refer to the diagram and select drain pipe size
according to drain opening inner diameter size.
