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Connecting drain pipe
• Connect a hard socket (locally procured) to the hard
socket of the attached supplied flexible hose.
• Connect a drain pipe (locally procured) to the
connected hard socket.
REQUIREMENT
• Connect hard vinyl chloride pipes securely using an
adhesive for vinyl chloride to avoid water leakage.
• It takes some time until the adhesive is dried and
hardened (refer to the manual of the adhesive). Do not
apply stress to the joint with the drain pipe during this
time period.
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 33.5" (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 11.8" (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.
11.8" (300 mm)
or less
Indoor unit
Underside of ceiling
23-EN
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.
Be sure to check draining also when installed in
heating period.
Using a pitcher or hose, pour water (1.5L to 2L (1/3 to
0.5 gallon)) 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
Pour water gently so that it does not spread around
inside the indoor unit, which may cause a malfunction.
Heat
exchanger
Float switch
connector (3P)
(CN34: red)
Drain pan
Power
supply
wiring
Tool for
pouring
Insert the hose end between the
water
heat exchanger and the drain pan,
and then bend the hose downward.
Bottle
Water (1.5L to 2L (1/3 to 0.5 gallon))
• 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 208/230V power to the
terminal blocks (L1) and (L2).
If doing so, the drain pump motor operates.
(Never apply 208/230V to (
,
,
,
)
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.)
208/230V ~ 60Hz
Power
terminals
CN34
(RED)
Red
Black
Pull out connector CN34 (Red)
from P.C. Board.
Black
Insulation process
• As shown in the figure, cover the flexible hose
an hose band with the attached insulation up to the
bottom of the indoor unit without gap.
• Cover the drain pipe seamlessly with a insulation
locally procured so that it overlaps with the attached
insulation of the drain connecting section.
Wrap the attached insulation seamlessly from
thesurface of the indoor unit.
Insulation of the
Insulation
drain connecting
(Locally procured)
section (Accessory)
* Direct the slits and seams of the insulation
upward to avoid water leakage.
– 12 –
Single phase
White
EN
24-EN
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