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RAV-SM561, 801CT-E
RAV-SM1101, 1401CT-E
3
DRAIN PIPING WORK
REQUIREMENT
• Be sure to perform heat insulation of the drain pipes of the indoor unit.
• Never forget to perform heat insulation of the connecting part with the indoor
unit. An incomplete heat insulation causes dewing.
• Set the drain pipe with downward slope (1/100 or more), and do not make
swelling or trap on the piping. It may cause an abnormal sound.
• For length of the traversing drain pipe, restrict to 20m or less.
In case of a long pipe, provide support brackets with interval of
1.5 to 2m in order to prevent waving.
CAUTION
• Following the Installation Manual,
perform the drain piping work so that
water is properly drained, and apply a
heat insulation so as not to cause a dew.
Inappropriate piping work may result in
water leakage in the room and wet of
furniture.
Piping/Heat insulating material
Require the following materials for piping and heat
insulating at site.
Trap
Arched
shape
Support
bracket
1/100 or more
downward
Heat
insulator
1.5m to 2m
As long as possible (10cm)
VP30 or more
Downward slope
1/100 or more
VP25
VP25
VP25
Extended
ventilating pipe
Adhesive inhibited :
Use the attached flexible hose and hose band for connecting the drain hose to the clear drain socket.
If applying the adhesive, socket will be damaged and cause water leakage.
Drain up
When not securing down slope on the drain pipe, use a drain up kit sold separately.
Also refer to the “Drain up kit installation manual”.
The drain pipe can be raised 60cm from the top face of the main unit.
* When using drain up kit, both drain pipe and refrigerant pipe can be taken only from upper side.
Piping
Heat insulator
Hard vinyl chloride pipe VP20
(Outer dia. : Ø26mm)
Foam polyethylene :
Thickness 10mm or more
<Collective piping>
• Set the collective piping as shown
in the right figure.
• Be sure not to apply force to the connecting part
of the drain pipe.
• The hard vinyl-chloride pipe cannot be directly
connected to the drain pipe connecting port of
the indoor unit.
For connection with the drain pipe connecting
port, be sure to use/fix the attached flexible hose
with the hose band, otherwise a damage or
water leak is caused on the drain pipe
connecting port.
Attached hose band
Soft socket Soft socket
Attached hose band
Attached flexible hose
Drain pipe connecting port
(Hard socket)
VP20 vinyl chloride pipe
(procured locally)
Adhesive agent
prohibited
Drain pan