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Align the attached
Drain pipe
hose band to the end
connecting
of hose, set the
port
VP20 vinyl chloride
tightening position
pipe
upward, and then
(Locally procured)
tighten it.
Soft socket
Soft socket
Adhesive agent
prohibited
• Adhesive agent cannot be used for the pipe
connecting port (Soft socket) of the indoor unit.
Be sure to use the attached hose band for fixing,
otherwise damage or water leakage of the drain pipe
connecting port is caused.
10 mm or less
Flexible
drain hose
Indoor
unit
12 mm ±5
Hose band
Tightening torque:
3.0~3.5 N•m
Min 28 mm
Connecting drain pipe
• Connect VP20 hard vinyl chloride pipe (Locally
procured) to flexible drain hose using attached hose
band.
23-EN
Drain up
When a down-gradient cannot be secured for the
drainpipe, drain-up piping is possible.
• The height of the drain pipe must be 850 mm or less
from the bottom of the ceiling.
• Take the drain pipe out of the drain pipe joint with the
indoor unit in 300 mm or less, and bend up the pipe
vertically.
• Immediately after the pipe is bent up vertically, lay
the pipe making a down-gradient.
• Set downward grading immediately after raising up
vertically.
300 mm or less
Indoor unit
Underside of ceiling
Check the draining
In the test run, check that water drain is properly
performed and water does not leak from the connecting
part of the pipes.
Check draining also when installed in heating period.
By using a pitcher or hose, pour water (1500 - 2000 cc)
into the discharge port before installation of the ceiling
panel.
Pour water gradually so that water does not spread on
the motor of the drain pump.
CAUTION
CAUTION
Pour water gently so that it does not spread around
inside the indoor unit, which may cause a malfunction.
Air
Heat
discharge
exchanger
area
Drain pan
Insert the leading part of the hose
between the heat exchanger and
the drain pan, and then bend it
downward.
Polyethylene hand pump for
pouring water in drain pan
• After the electric work has finished, pour water
during COOL mode operation.
• If the electric work has not yet finished, pull out the
float switch connector (CN34: Red) from the
electrical control box, and check draining by plugging
the single phase 208 V to 240 V power to the
terminal blocks (L) and (N).
If doing so, the drain pump motor operates.
(Never apply 208 V to 240 V to (Uv (U1)), (Uv (U2)),
(A), (B)
,
otherwise a trouble of P.C. board occurs.)
• Test water drain while checking the operation sound
of the drain pump motor.
(If the operation sound changes from continuous
sound to intermittent sound, water is normally
drained.)
After the check, the drain pump motor runs,
connecting the float switch connector.
(In case of check by pulling out the float switch
connector, be sure to return the connector to the
original position.)
220 V - 240 V, 50 Hz
208 V - 230 V, 60 Hz
Power
terminals
L
N
CN34
(RED)
Red
Black
Pull out connector CN34 (Red)
from P.C. board.
Black
– 12 –
Vessel
Water (1500 cc to 2000 cc)
Perform heat insulating
• As shown in the figure, cover the flexible hose and
hose band with the attached heat insulator up to the
bottom of the indoor unit without gap.
• Cover the drain pipe seamlessly with a heat insulator
to be procured locally so that it overlaps with the
attached heat insulator of the drain connecting
section.
Wrap the attached heat insulator seamlessly from
the surface of the indoor unit.
Flexible hose
Hose band
Heat insulator to be
Attached heat
procured locally
insulator
Hard vinyl chloride pipe
• Direct the slits and seams of the heat insulator
upward to avoid water leakage.
White
24-EN
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