Ceiling type
Installation Manual
Ceiling type
Installation Manual
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6
Drain Piping Work
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 drop.
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.
REQUIREMENT
• Perform heat insulation of the drain pipes of the indoor
unit.
• Perform heat insulation of the connecting part with the
indoor unit.
An incomplete heat insulation causes dew drop.
• 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 65’7”
(20 m) or less.
In case of a long pipe, provide support brackets with
interval of 4’11” - 6’7” (1.5 - 2 m) in order to prevent
waving.
• Set the collective piping as shown in the below figure.
• Do not 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, fix
the attached flexible hose with the hose band,
otherwise a damage or water leak is caused on the
drain pipe connecting port.
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.
Connecting drain pipe
• Connect the hard vinyl chloride pipe (procured
locally) to the mounted drain hose which was
attached.
• Piping from left side
• To take pipe from the left side, exchange the plug
from left to right. Push in the plug of which end is
not sharp up to the end.
Piping
Hard vinyl chloride pipe VP20
(Outer dia.: Ø1.0” (26 mm))
Heat insulator
Foam polyethylene:
Thickness 0.4” (10 mm) or more
Support
bracket
1/100 or more
downward
Heat insulator
4’11” - 6’7” (1.5 - 2 m)
Arched
shape
Trap
NO
GOOD
VP25
As long as possible (3.9” (100 mm))
Downward slope
1/100 or more
VP30 or more
VP25
VP25
Drain pipe connecting port
(Hard socket)
Attached flexible hose
VP20 vinyl chloride pipe
(procured locally)
Soft socket
Soft socket
Adhesive agent
prohibited
Attached hose band
Attached hose band
Drain pan
Plug
Drain pan
Drain up
When not securing down slope on the drain pipe, use
a Drain pump kit sold separately.
Also refer to the “Drain pump kit installation manual”.
The drain pipe can be raised 23.6” (600 mm) from the
top face of the main unit.
* When using Drain pump kit, both drain pipe and
refrigerant pipe can be taken only from upper side.
* VP25 PVC pipe is needed when a drain pump is
used.
Connection of drain hose
• Insert the attached drain hose into the drain pipe
connecting port on the drain pan up to the end.
• Fit the attached hose band to the end of the pipe
connecting port, and then tighten it securely.
REQUIREMENT
• Fix the drain hose with the attached hose band, and
set the tightening position upward.
• As the draining is the natural water draining, arrange
the pipe outside of the unit on the down slope.
• If piping is performed as shown in the figure, drain
cannot be discharged.
Perform heat insulating
• Using the attached drain hose heat insulator, lap the
connecting section and the drain hose without
clearance, and then tighten with two handing band
so that heat insulator does not open.
• Covering the attached drain hose heat insulator, lap
the heat insulator (procured locally) to the drain pipe
without clearance.
Drain pipe
Drain pipe
Refrigerant pipe
NO GOOD
Confirm that soft hose is pushed
in up to the end of the drain pan.
Attached drain hose
Drain pan
Fit the attached hose band to the end of the hose, lay
down the knob, and then tighten hose band.
Heat insulator
(procured locally)
Attached heat insulator
Drain
pan
Lap covering connecting section
between drain pan and drain hose.
Hose band
Banding band
Hose band
Drain hose
Lap the attached
heat insulation so
that the one end
is put on the other
end at the upper
side.
* Tighten the banding band so that attached
heat insulator is not pushed excessively.
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+00EH99876401_00Ta.book Page 7 Monday, January 17, 2011 10:47 AM
