CAUTION
●
If it is necessary to increase the height of the
drain pipe, the section directly after the connec-
tion port can be raised a maximum of 50 cm. Do
not raise it any higher than 50 cm, as this could
result in water leaks. (Fig. 3-65-2)
●
Do not install the pipe with an upward gradient from
the connection port. This will cause the drain water
to flow backward and leak when the unit is not
operating. (Fig. 3-65-3)
●
Do not apply force to the piping on the unit side
when connecting the drain pipe. The pipe should
not be allowed to hang unsupported from its con-
nection to the unit. Fasten the pipe to a wall, frame,
or other support as close to the unit as possible.
(Fig. 3-65-4)
3-21. Checking the Drainage
After wiring and drain piping are completed, use the
following procedure to check that the water will drain
smoothly. For this, prepare a bucket and wiping cloth
to catch and wipe up spilled water.
(1) Connect power to the power terminal board (R, S
terminals) inside the electrical component box.
(2) Remove the tube cover and slowly pour about
1,200 cc of water through the opening into the
drain pan to check drainage.
(3) Short-circuit the check pin (CHK) on the indoor
control circuit board and operate the drain pump.
Check the water flow through the transparent drain
port and see if there is any leakage.
CAUTION
(4) When the drainage check is complete, open the
check pin (CHK) and remount the insulator and
drain cap onto the drain inspection port.
DC̲Inverter̲Eng.indd 39
DC̲Inverter̲Eng.indd 39
●
Do not install an air bleed-
er as this may cause water
to spray from the drain
pipe outlet. (Fig. 3-65-1)
Be careful since the fan will
start when you short the pin
on the indoor control board.
Air bleeder
Prohibited
Fig. 3-65-1
30 cm or less
50 cm or less
Good
Fig. 3-65-2
Upward gradient
Prohibited
Fig. 3-65-3
Support pieces
Fig. 3-65-4
Water intake
Fig. 3-66
39
GB
FR
DE
IT
PT
GR
ES
2007/07/25 13:21:42
2007/07/25 13:21:42