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SMMS 1-Way Cassette SH Type
Installation Manual
SMMS 1-Way Cassette SH Type
Installation Manual
Connecting drain pipe
• Connect a hard socket (procured locally) to the hard
socket of the attached supplied flexible hose.
• Connect a drain pipe (procured locally) 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 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.
• Set downward grading immediately after raising up
vertically.
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
Pour water gently so that it does not spread around
inside the indoor unit, which may cause a malfunction.
Drain pipe
connecting port
(Transparent)
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.
Align the attached hose band to
the end of hose, set the
tightening position upward, and
then tighten it.
Flexible hose
(Accessory)
Socket for VP25 vinyl chloride pipe
(To be local procure)
Drain pipe
connecting port
(Hard socket)
VP25 vinyl chloride pipe
(To be local procure)
Attached hose
band
Attached flexible hose
Soft socket
Hard socket
Socket for VP25 (To
be local procure)
VP25 vinyl chloride
pipe (To be local
procure)
Ind
oor
uni
t
In
doo
r un
it
R
is
in
g up
696
m
m
or les
s
Underside of ceiling
Indoor unit
300 mm or less
R
is
ing u
p 850
mm or l
e
ss
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.
220 - 240 V, 50 Hz
220 V, 60 Hz
Pull out connector CN34
(Red) from P.C. board.
White
Red
Black
Black
Heat exchanger
Float switch connector (3P)
(CN34: Red)
Drain pan
Power supply line
Insert the edge of
hose into the drain
pan and bend it
downward.
Pump
Water (1500 cc to 2000 cc)
Vessel
17-EN
18-EN
+00EH99880399_01EN.book Page 9 Monday, April 4, 2011 11:24 AM
