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Fig. 3-9
11-3/16 in. or less (as short as possible)
33-15/32 in. or less
0 – 45°
* Length of supplied drain hose = 9-27/32 in.
Fig. 3-10
Upward gradient prohibited
Fig. 3-11
Fig. 3-12
Support
pieces
Water (Approx. 0.3 gal)
Drain pan outlet
Drainage check
Plastic container
for water intake
Over 3-15/16 in.
● In cases where it is necessary to raise the height
of the drain piping, the drain piping can be raised
to a maximum height of 33-15/32" above the
bottom surface of the ceiling. Under no
conditions attempt to raise it higher than
33-15/32" above the bottom surface of the ceiling.
Doing so will result in water leakage. (Fig. 3-9)
● 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. 3-10)
● 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
connection to the unit. Fasten the pipe to a wall,
frame, or other support as close to the unit as
possible. (Fig. 3-11)
● Provide insulation for any pipes that are run
indoors.
3-5. 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) Slowly pour about 0.3 gal of water into the drain pan
to check drainage. (Fig. 3-12)
(3) Short the check pin (CHK) on the indoor control
board and operate the drain pump. Check the water
flow through the transparent drain pipe and see if
there is any leakage.
(4) When the check of drainage is complete, open the
check pin (CHK) and remount the tube cover.
CAUTION
Be careful since the fan will
start when you short the pin
on the indoor control board.
CAUTION
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 26