Checking The Drainage; How To Install The Ceiling Panel - Panasonic CS-MKS9NB4U Installation Instructions Manual
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3-5. Checking the Drainage
After wiring and drain piping are completed, use the following pro-
cedure to check that the water will drain smoothly. For this, pre-
pare a bucket and wiping cloth to catch and wipe up spilled water.
Be sure to do the wiring between the units before installing the
ceiling panel. (Refer to 3-8. Wiring Instructions for Inter-unit
Connections)
(1) Turn on the power. (Here, “power” refers to the power supply
from the outdoor unit.)
(2) Slowly pour approx. 16 ounces (500 ml) of water into the drain
pan to check drainage. (Fig. 6-10a)
(3) Remove the 2 screws from the control box cover, then open
the cover. Be careful not to drop the cover at this time.
(4) Disconnect the FS 3P connector (red) on the control PCB and
operate the drain pump. (Fig. 6-10b) Check the water flow
through the transparent drain pipe and see if there is any
leakage.
(5) When the check of drainage is complete, reconnect the FS
3P connector and remount the control cover.
The drain pump will continue to
CAUTION
operate for a minimum of 6 min-
utes after the FS 3P connector is
reconnected.
3-6. How to Install the Ceiling Panel
Checking the unit position
(1) Check that the ceiling hole is 23-5/8" (600 mm)
23-5/8"
(600 mm) (Fig. 6-11)
(2) Confirm that the position of the indoor unit and the ceiling
as shown in the diagram. If the positions of the ceiling sur-
face and unit do not match, air leakage, water leakage, flap
operation failure, or other problems may occur. (Fig. 6-11)
CAUTION
Never place the panel face-down. Neither hang it ver-
tically nor place it on top of a projecting object. Plac-
ing it face-down will damage the surface.
Do not touch the flap or apply force to it. (This may
cause flap malfunction.) (Fig. 6-12)
3-6-1. Before Installing the Ceiling Panel
(1) Remove the air-intake grille and air filter from the ceiling
panel.
a) Press on and slide the two latches of the air-intake grille
with your thumb in the direction shown by the arrow
1
to open the grille. (Figs. 6-13 and 6-14)
b) With the air-intake grille opened, remove the grille hinge
from the ceiling panel by sliding it in the direction shown
by the arrow
. (Fig. 6-15)
2
Water drain
Over 4"
(100mm)
Control box
Plastic container
Drain pan outlet
for water intake
Water
(Approx. 16 ounces (500m ) )
Fig. 6-10a
Control box
FS
IND
RC
Fig. 6-10b
must be within the range of 1/2"(13mm) to 23/32"(18mm). (Fig. 6-11)
A
If not within this range, malfunction or other trouble may occur.
Indoor unit
A
Ceiling opening
dimension
Ceiling side
Fig. 6-11
NO
Flap
Fig. 6-12
Fig. 6-13
Ceiling panel
Air-intake grille
1
1
Air-intake grille hinge
Fig. 6-14
2
Fig. 6-15
Page 9
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