Specifications

193
Joint for VP-25
(local procurement)
Pipe cover (small)[insulation]
(accessory)
Drain socket
Indoor
unit
Drain socket
Level difference part
Drain hose
Clamp
(accessory)
Drain hose
(accessory)
Adhesion
VP-25
(local procurement)
Pipe cover [insulation]
(local procurement)
Pipe cover (large)[insulation]
(accessory)
(h) Drain piping
1) Drain piping should always be in a downhill grade (1/50-1/100) and avoid riding across an elevation or making traps.
2) When connecting the drain pipe to the unit, pay suffcient attention not to apply excess force to the piping on the unit side.
Also, fix the piping at a point as possible to the unit.
3) For drain pipe, use hard PVC general purpose pipe VP-25 which
can be purchased locally. When connecting, insert a PVC pipe
end securely into the drain socket before tightening securely us-
ing the attached drain hose and clamp. Adhesive must not be used
connection of the drain socket and drain hose (accessory).
4) When constructing drain piping for several units, position the common pipe about 100mm below the drain outlet of each
unit as shown in the sketch below. Use VP-30 or thicker pipe for this purpose.
5) Be sure to provide heat insulation to hard PVC pipes of indoor placement.
6) Do not ever provide an vent.
7) The height of the drain head may be elevated up to a point 600mm from the bottom of unit and when an obstacle exists in
the ceiling space, elevate the piping to avoid the obstacle using an elbow or corresponding gadget. When doing this, if the
stretch for the needed height is too high, the back-flow quantity of drain at the time of interruption of the operation gets
too much and it may cause overflow at the drain pan. Therefore, make the height of the drain pipe withing the distance
given in the drawing below.
8) Avoid positioning the drain piping outlet at a place where ganeration of odor may be stimulated. Do not lead the drain
piping direct into a sewer from where sulfur gas may ganerate.
1.5 m ~ 2m
Suspension
bolts
Heat
insulation
A downhill grade
of 1/100 or more
Air vent
Avoid riding across an elevation
Keep free from traps
Do not pipe under water
VP-30
A downhill grade
of 1/100 or more
Secure the elevation as high as possible
(approx. 100 mm)
Right above
295 ~ 325
Drain hose
Joints for VP-25
600 (local maximum height of drain head)
●Good piping
● Improper piping
Unit : mm