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Concealed Duct Type
Installation Manual
EN
Concealed Duct Type
Installation Manual
Drain up
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. When doing this, also check that no abnormal sounds are heard from the drain pump motor. Check
draining also when installed in heating period.
When the electrical and wiring work has been completed
• Pour some water by following the method shown in the following figure. Then, while performing a cooling
operation, check that the water drains from the drain pipe connecting port (transparent) and that no water is
leaking from the drain pipe.
When the electrical and wiring work has not been completed
• Disconnect the float switch connector (3P: red) from the connector (CN34: red) on the printed circuit board inside
the electrical parts box. (Before doing this, the power must be turned off.)
• Connect a 220 V to 240 V supply voltage to (L) and (N) on the power supply terminal block. (Do not apply a 220
V to 240 V voltage to (A), (B) of the terminal block. Otherwise, the printed circuit board may be damaged.)
• Pour the water by following the method shown in the following figure. (Amount of water poured: 1500 cc to 2000
cc)
• When the power is turned on, the drain pump automatically starts running. Check whether the water is draining
from the drain pipe connecting port, and check that no water is leaking from the drain pipe.
• After checking that the water drains and there are no water leaks, turn off the power, connect the float switch
connector to its original location (CN34) on the printed circuit board, and return the electrical parts box to its
original position.
When a down-gradient cannot be secured for the drain pipe, drain-up
piping is possible.
• The height of the drain pipe must be 550 mm or less from the underside
of the indoor unit.
• Take the drain pipe out of the drain pipe joint with the indoor unit in 100
mm or less, and bend up the pipe vertically.
• Immediately after the pipe is bent up vertically, lay the pipe making a
down-gradient.
100mm or less
Indoor unit
D
o no
t ra
ise
th
e ho
se
to
550
mm or
m
o
re
.
Bring the end of
the hose close to
the inlet of the
drain pump.
Service panel
220 V to 240 V
Pull out connector CN34
(Red) from P.C. board.
White
Red
Black
Black
Heat insulating process
After drain check, covering the heat insulator for drain connecting section, wrap the drain pipe with heat insulator
(Locally procured) without clearance from the end of the drain pipe connecting port of the indoor unit.
To cover the pipe and the indoor unit with
a heat insulator, do not make a space
between them.
Heat insulator
PVC pipe
Fix the insulator with adhesive tape
Heat insulator
(indoor unit side)
(locally procured)
(locally procured)
15-EN
16-EN
+00EH99878599_01EN.book Page 8 Saturday, April 2, 2011 4:13 PM
