– 12 –
• 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.
Connecting drain pipe
• Connect VP20 hard vinyl chloride pipe (Locally
procured) to flexible drain hose using attached hose
band.
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.
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.
Drain pipe
connecting
port
Align the attached
hose band to the end
of hose, set the
tightening position
upward, and then
tighten it.
VP20 vinyl chloride
pipe
(Locally procured)
Soft socket
Soft socket
Adhesive agent
prohibited
Flexible
drain hose
Hose band
Indoor
unit
10 mm or less
12 mm ±5
Tightening torque:
3.0~3.5 N•m
Min 28 mm
R
is
ing up
636 m
m
or l
es
s
Underside of ceiling
Indoor unit
300 mm or less
Ri
si
ng
up 850 mm or
le
ss
• 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 220 - 240 V power to the terminal
blocks R(L) and S(N).
If doing so, the drain pump motor operates.
(Never apply 220-240 V to
, ,
or ,
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.)
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.
* Direct the slits and seams of the heat insulator
upward to avoid water leakage.
Air
discharge
area
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
Water (1500 cc to 2000 cc)
Vessel
Drain pan
Heat
exchanger
U
1
U
2
A
B
L
N
Pull out connector CN34 (Red)
from P.C. board.
CN34
(RED)
Black
Black
Red
White
Power
terminals
220 - 240 V, 50 Hz
220 V, 60 Hz
Wrap the attached heat insulator seamlessly from
the surface of the indoor unit.
Flexible hose
Hose band
Attached heat
insulator
Heat insulator to be
procured locally
Hard vinyl chloride pipe
23-EN
24-EN
Содержание MMU-AP0057MH-E
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