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CAUTION
● If it is necessary to increase the height of the drain pipe,
the section directly after the connection port can be
raised a maximum of 64 cm. Do not raise it any higher
than 64 cm, as this could result in water leaks. (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)
30 cm or less
(as short as possible)
64 cm or less
Fig. 3-9
● 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.
● Refer to the section "
PIPING. "
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 1,200 cc (4WK Type) of water into the
drain pan to check drainage. (Fig. 3-12)
4WK Type
Drainage check
Over 100 mm
Plastic container
Water
for water intake
(Approx. 1,200 cc)
(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.
Big_PAC_eng.indb 18
Big_PAC_eng.indb 18
Upward gradient prohibited
Fig. 3-10
Support pieces
Fig. 3-11
■
SUPPLEMENT ON DRAIN
Drain pan outlet
Fig. 3-12
■ Wall-Mounted Type (HW Type)
3-6. Removing the Rear Panel from the Unit
(1) Remove the set screws used to fasten the rear panel to the
indoor unit during transportation.
(2) Press up on the rear panel at the 2 locations shown by the
arrows and remove the rear panel (Fig. 3-13).
Screws used during
transportation
Press
Remove the rear panel
N OT E
Tubing can be extended in 4 directions. Select the direction
which will provide the shortest run to the outdoor unit. (Fig. 3-14)
Left-rear tubing
Left tubing
3-7. Selecting and Making a Hole
(1) Remove the rear panel from the indoor unit and place it
on the wall at the location selected. Fix the rear panel and
hook the unit onto the wall temporarily. Make sure the unit
is horizontal using a carpenter's level or tape measure to
measure down from the ceiling.
(2) Determine which notch of the rear panel should be used.
(Fig. 3-15)
Center of left
rear tubing hole
Tubing hole diameter
(3) Before drilling a hole, check that there are no studs or
pipes behind the determined location.
The above precautions are also applicable if tubing goes
through the wall in any other location.
(4) Using a sabre saw, key hole saw or hole-cutting drill
attachment, make a hole (dia. 80 mm) in the wall. (Fig. 3-16)
18
Fig. 3-13
Right-rear
tubing
(recommended)
Right tubing
Fig. 3-14
Center of right
rear tubing hole
ø80
Fig. 3-15
2009/08/26 16:33:11
2009/08/26 16:33:11
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