Shape The Indoor Side Tubing; Wiring Instructions; Wiring Instructions For Inter-Unit Connections; Mounting - Panasonic S-28MD1E5 Instructions D'installation

SUPPLEMENT
(b) Press the bottom right and left corners and center of
the air intake grille to attach it to the indoor unit.
(Fig. 3-45)
Fig. 3-45
N OT E
Attach so that the round pins at the top right and left corners of
the air intake grille are inserted into the grooves at the top right
and left of the indoor unit.

3-15. Shape the Indoor Side Tubing

(1) Arrangement of tubing by directions
a) Right or left tubing
Cut out the corner of the right/left frame with a
hacksaw or the like. (Figs. 3-46 and 3-47)
b) Right-rear or left-rear tubing
In this case, the corner of the frame need not be cut.
Frame
Frame
Right tubing
Left tubing
outlet
outlet
Fig. 3-46 Fig. 3-47
(2) To mount the indoor unit on the rear panel:
Hang the 2 mounting slots of the unit on the upper
tabs of the rear panel. (Fig. 3-48)
Fig. 3-48

3-16. Wiring Instructions

General precautions on wiring
(1) Before wiring, confirm the rated voltage of the unit as
shown on its nameplate, then carry out the wiring closely
following the wiring diagram.
(2) Provide a power outlet to be used exclusively for each
unit, with a power supply disconnect and circuit breaker for
overcurrent protection provided in the exclusive line.
(3) To prevent possible hazard due to insulation failure, the
unit must be grounded.
(4) Each wiring connection must be done tightly and in
accordance with the wiring system diagram. Wrong wiring
may cause the unit to misoperate or become damaged.
(5) Do not allow wiring to touch the refrigerant tubing,
compressor, or any moving parts of the fan.
(6) Unauthorized changes in the internal wiring can be very
dangerous. The manufacturer will accept no responsibility
for any damage or misoperation that occurs as a result of
such unauthorized changes.

3-17. Wiring Instructions for Inter-unit Connections

(1) Grasp both ends of the air intake grille, and remove it by
opening toward the front and pulling it toward you.
(2) Remove the screw on the right side cover plate and open
the cover. (Fig. 3-49)
Cover
Fig. 3-49
(3) Insert the inter-unit wiring into the through-the-wall PVC
pipe. Lead the power wiring into the room allowing approx.
25 cm to extend from the wall face. (Fig. 3-50)
Rear
panel
Plastic
cover
Wiring
25 cm
Fig. 3-50
(4) Route the inter-unit wiring from the back of the indoor unit
and pull it toward the front for connection. (Fig. 3-51)
(5) Connect the inter-unit wiring to the corresponding terminals
on the terminal plate (Fig. 3-51) while referring to the wiring
diagram.
Protective ground screw
(External Solenoid Valve Kit for 3WAY)
Use this screw when
connecting the shield
for the Inter-unit control
wiring to ground.
L1 L2 N U1 U2
Functional ground screw
(External Electronic Expansion
Valve Kit and Schedule Timer)
Remote Control Wiring
Power Supply
Inter-unit Control Wiring
Fig. 3-51
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(6) Be sure to secure the wiring with the provided clamp.
NOTE
When closing the air intake grille, press the bottom right and left
corners and center. (Fig. 3-52)
Fig. 3-52
Please refer to "How to replace the grille" for installing the air
intake grille.
WARNING
Loose wiring may cause the terminal to overheat or result
in unit malfunction. A fire hazard may also exist.
Therefore, be sure all wiring is tightly connected.
When connecting each power wire to the corresponding
terminal, follow the instructions "How to connect wiring to the
terminal" and fasten the wire securely tight with the fixing screw
of the terminal plate.
How to connect wiring to the terminal
a) For Indoor Unit
(1) Cut the wire end with a cutting pliers, then strip the
insulation to expose the wire about 8 mm. See the label
(Fig. 3-53) near the terminal plate.
For indoor unit
STRIP 8 mm (ACTUAL
SIZE SIZE)
Fig. 3-53
(2) Using a screwdriver, loosen the terminal screw on the
terminal plate.
(3) Insert the wire and tighten the terminal screw completely
using a screwdriver.
b) For Outdoor Unit
■ For solid core wiring (or F-cable)
(1) Cut the wire end with a cutting pliers, then strip the
insulation to expose the solid wire about 25 mm.
(Fig. 3-54)
For outdoor unit
Solid wire
Loop
Insulation
Fig. 3-54
(2) Using a screwdriver, remove the terminal screw(s) on the
terminal plate.
(3) Using the pliers, bend the solid wire to form a loop suitable
for the terminal screw.
(4) Shape the loop wire properly, place it on the terminal plate
and fix it securely with the removed terminal screw using a
screwdriver.
■ For stranded wiring
(1) Cut the wire end with a cutting pliers, then strip the
insulation to expose the stranded wiring about 10 mm and
tightly twist the wire ends. (Figs. 3-55 and 3-56)
Twist wire ends
Stranded wire
Ring
connector
Fig. 3-55 Fig. 3-56
(2) Using a screwdriver, remove the terminal screw(s) on the
terminal plate.
(3) Using a ring connector fastener or pliers, securely clamp
each stripped wire end with a ring connector. (Fig. 3-55)
(4) Place the ring connector wire, and replace and tighten the
removed terminal screw using a screwdriver. (Fig. 3-57)
Screw
Special
washer
Screw and
special washer
Ring connector
Terminal plate
Wire Ring
connector
Wire
Fig. 3-57

3-18. Mounting

(1) To install the indoor unit, mount the indoor unit onto the 2
tabs on the upper part of the rear plate.
(2) Hold down the air discharge outlet and press the lower part
of the indoor unit until it clicks to securely fasten to the 2
tabs on the lower part of the rear plate. (Fig. 3-58)
Push
Fig. 3-58
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