Removing The Ceiling Panel For Servicing; 2-Way Cassette Type (L1 Type) (For 73 Type); Before Installing The Ceiling Panel; Installing The Ceiling Panel - Panasonic S-28MD1E5 Instructions D'installation

SUPPLEMENT
(2) Install the ceiling panel onto the indoor unit. (See Fig. 7-15.
The connector is on the electrical component box.)
[1] Fasten the stationary fasteners (opposite side of the
connector) to the indoor unit. (Fig. 7-16a) Next, lift up
the connector side and fasten the movable fastener
onto the indoor unit. (Fig. 7-16b)
Fig. 7-16a Fig. 7-16b
At this time, check that the movable fastener locks
with a click sound onto the indoor unit.
The ceiling panel includes these provisional-fastening
fasteners to facilitate installation onto the indoor unit.
[2] Check that the ceiling panel is provisionally fastened to
the indoor unit.
[3] Next use the supplied screws (four M5 × L40 screws
with washers) to fasten the ceiling panel in place.
[4] When installation of the ceiling panel is completed,
connect the 8P red connector inside the indoor unit
electrical component box to the connector from the
ceiling panel. (Fig. 7-17) (If this connector is not
connected, the error message "P09" is displayed on
the remote controller and the unit will not operate.)
Connecting the connector
Connector (8P, red)
Panel connector
Fig. 7-17
Operating the movable fastener
Fig. 7-18
[5] Check that the ceiling panel and ceiling surface are
in tight contact, then install the air filter and air intake
panel.

7-5. Removing the Ceiling Panel for Servicing

When removing the ceiling panel for servicing, remove the air-
intake grille and air filter, disconnect the wiring connector inside
the electrical component box, and then remove the 4 mounting
screws.
Release one side of the panel by pressing the panel catch in
the direction of the arrow. (See Caution.) Completely remove
the ceiling panel by disengaging the stationary catch.
(Figs. 7-16a and 7-16b)
CAUTION
When the air filter is removed, the rotator and live parts are
exposed at the openings and these can cause a danger.
Therefore be particularly careful.

■ 2-Way Cassette Type (L1 Type) (For 73 Type)

7-6. Before Installing the Ceiling Panel

(1) Adjust the distance between the unit and the surface of the
ceiling (60 mm) using the 2 hexagonal nuts as shown in
Fig. 7-19 while following the installation gauge.
Indoor unit
Ceiling
Unti: mm
Fig. 7-19
(2) Remove the air-intake panel and the air filter from the
ceiling panel as shown in Figs. 7-20 and 7-21.
Safety lid
Indoor unit
Electrical
component box
Ceiling panel
M4 × 25 screw, 2 pcs.
Latch
(Only 73 Type)
Safety string
Filter installation section
Air filter
Safety string
Filter installation section
Safety string
M5 × 40 screw, 4 pcs.
Air-intake panel
Safety string
Unti: mm
Fig. 7-20
How to open the air-intake panel (from either side)
(1) Push in. (2) Slide. (3) Pull. ( (4) Remove.)
Safety string
(4)
2
1 3
Air-intake panel
Fig. 7-21
NOTE
If you wish to remove the air-intake panel, remove the strings
attached to the air-intake panel.
The air-intake panel is removed from the ceiling panel.
Be sure to reattach the string to the air-intake panel when
returning to the original position.
CAUTION
Never touch or attempt to move the air-direction louver by
hand or you may damage the unit. Instead, use the remote
controller if you want to change the direction of air flow.
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7-7. Installing the Ceiling Panel

(1) Lift the ceiling panel and position it to align the panel
catches with the catch recesses of the indoor unit.
(2) Hook the stationary catch first and then press up on the
opposite side to engage the level catch to install as shown
in Fig. 7-22.
Panel catch (level catch side)
Panel catch (stationary side)
Fig. 7-22
NOTE
The ceiling panel must be mounted correctly. Listen for the click
to determine it is securely shut.
(3) Next, check to see that the ceiling panel is properly aligned
with the seamline of the ceiling. If it is not, remove the
ceiling panel and slightly readjust the indoor unit body to
the proper suspension point.
(4) When the ceiling panel has been properly aligned, use
the 4 supplied mounting screws (M5) with washers to
permanently fasten the ceiling panel.
(5) Install the wiring connector from the ceiling panel to the
connector in the electrical component box of the indoor
unit (8P connector if heat pump model). After installing the
connector, use the clamp on the body of the indoor unit to
secure the wiring.
NOTE
If the connector is not connected, a misoperation signal ("P09"
on the remote control display) will be displayed when the unit is
turned on.
(6) Install the air filter and air-intake grille by performing the
steps in Figs. 7-20 and 7-21 in reverse.
7-8. Removing the Ceiling Panel for Servicing
When removing the ceiling panel for servicing, remove the air-
intake grille and air filter, disconnect the wiring connector inside
the electrical component box, and then remove the 4 mounting
screws.
Connector
Electrical component box
Fig. 7-23
Release one side of the panel by pressing the panel catch in
the direction of the arrow. (See Caution.) Completely remove
the ceiling panel by disengaging the stationary catch. (Fig. 7-22)
CAUTION
When the air filter is removed, the rotator and live parts are
exposed at the openings and these can cause a danger.
Therefore be particularly careful.

8. APPENDIX

■ Name of Parts

D1 Type (1-WAY CASSETTE)
Air outlet
Water
drain
Ceiling
panel
(optional)
Air intake grille
(air intake)
L1 Type (2-WAY CASSETTE)
Water drain
Air outlet
(2 locations)
Air intake
(2 locations)
Ceiling panel (optional)
K1 Type (WALL MOUNTED)
Air intake
Air outlet
R1 Type (CONCEALED FLOOR STANDING)
Air outlet duct
connecting
flange
(optional)
Air outlet
Front panel
Drain pan
Water drain
Air intake
(air filter)
P1 type (FLOOR STANDING)
Operation door
(The remote control unit (sold separately) can
be placed inside here.)
Air outlet
(Air outlet grille)
Front panel
(A drain pan is
provided inside.)
Air intake (air filter)
40