Checking The Drainage; Wall Mounted Type (K1 Type); Types; Remove The Rear Panel From The Unit - Panasonic S-22ML1E5 Installation Instructions Manual

(2) After checking the drainage, wrap the supplied packing
and drain pipe insulator around the pipe, then secure it
with the supplied clamps. (Fig. 3-25)
Drain insulator (supplied)
NOT E
Make sure the drain pipe has a downward gradient (1/100 or
more) and that there are no water traps.
CAUTION
● Do not install an air bleeder as this may cause water to
spray from the drain pipe outlet. (Fig. 3-26)
Air bleeder
● 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 500 mm. Do not raise it any higher
than 500 mm, as this could result in water leaks.
(Fig. 3-27)
300 mm or less (as short as possible)
● 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. 3-28)
Upward gradient prohibited
● 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. 3-29)
● Provide insulation for any pipes that are run indoors.
Vinyl clamps
500 mm or less
Support
pieces

3-10. 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 through the opening, slowly
pour about 1,200 cc of water into the drain pan to check
the drainage.
(3) Short the check pin (CHK) on the indoor control board and
Fig. 3-25
operate the drain pump. Check the water flow through the
transparent drain port and see if there is any leakage.
CAUTION
Be careful since the fan will start when you short the pin on
the indoor control board.
(4) When the check of drainage is complete, open the check
pin (CHK) and remount the tube cover. (Fig. 3-30)
Drainage check section
(transparent drain port)
Fig. 3-26
CAUTION
To mount the tube cover, use 4 × 8 tapping screws.
(Fig. 3-30) Do not use long screws as they may puncture
Fig. 3-27
the drain pan and cause water leakage.

■ Wall Mounted Type (K1 Type)

22, 28, 36 types

3-11. Remove the Rear Panel from the Unit

(1) Remove and discard the set screw on the rear panel.
(Fig. 3-31)
Fig. 3-28
Fig. 3-29
12
Inspection cover
Water for checking drainage
(Approx. 1,200 cc)
Set screw only for transportation
Fig. 3-30
Fig. 3-31