Electrical Wiring; General Precautions On Wiring; Recommended Wire Length And Wire Diameter; For Power Supply System - Panasonic S-28MD1E5 Instructions D'installation

(2) Ensure that the drain pipe has a downward gradient of
1/100 or more and that there are no water traps.
(3) Provide insulation for the drain pipe.
(4) After the drain piping is completed, pour water into the
drain pan to check that the water drains smoothly.
(5) Remove any dust or debris in the drain pan so that the
pipe is not clogged.
Drain hose (supplied) Drain insulator (supplied)
Insulating tape
Vinyl clamp
(supplied)
(supplied)
Hose band
(supplied)
Vinyl clamps
Drain hose insulator
Hard PVC pipe
(supplied)
O.D. 25 mm (field supply)
(field supply)
Fig. 3-115
3-34. Installing the Remote Controller
A remote controller (optional wired remote controller) can be
mounted in the indoor unit (Floor Standing type).
(1) Remove the cover of the optional wired remote controller.
(Fig. 3-116)
Fig. 3-116
To remove the cover from the remote controller, insert a
screwdriver between the cover and the controller as shown in
the figure above, and pry off the cover.
(2) Remove the front panel. Remove the screws and fixture.
(Fig. 3-117)
(3) Place the remote controller into the space in the unit
as shown in Fig. 3-117. Assemble the lead wires of the
remote controller to its rear side center and route them to
the lead wire guide.
Lead wire guide
Remote
controller
Fixture
Screw
Fig. 3-117
(4) Secure the fixture using the supplied screws.
SUPPLEMENT

4. ELECTRICAL WIRING

4-1. 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, and a power supply disconnect and circuit breaker for
overcurrent protection should be provided in the exclusive
line.
(3) To prevent possible hazards from insulation failure, the unit
must be grounded.
(4) Each wiring connection must be done 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.
(7) Regulations on wire diameters differ from locality to
locality. For field wiring rules, please refer to your LOCAL
ELECTRICAL CODES before beginning.
You must ensure that installation complies with all relevant
rules and regulations.
(8) To prevent malfunction of the air conditioner caused by
electrical noise, care must be taken when wiring as
follows:
● The remote control wiring and the inter-unit control wiring
should be wired apart from the inter-unit power wiring.
● Use shielded wires for inter-unit control wiring between units
and ground the shield on both sides.
(9) If the power supply cord of this appliance is damaged,
it must be replaced by a repair shop appointed by the
manufacturer, because special-purpose tools are required.

4-2. Recommended Wire Length and Wire Diameter

for Power Supply System

Indoor unit
(B) Power supply Time delay fuse or
Type
circuit capacity
2.5 mm 2
K1 Max. 150 m 10 – 16A
D1, L1, P1, R1 Max. 130 m 10 – 16A
Control wiring
(C) Inter-unit (between (D) Remote control wiring
outdoor and indoor
units) control wiring
0.75 mm 2 (AWG #18) 0.75 mm 2 (AWG #18)
Use shielded wiring*
Max. 1,000 m Max. 500 m
(E) Control wiring for group (F) Inter-outdoor unit control
control wiring
0.75 mm 2 (AWG #18) 0.75 mm 2 (AWG #18)
Use shielded wiring
Max. 200 m (Total) Max. 300 m
NOTE
* With ring-type wire terminal.
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4-3. Wiring System Diagram

Indoor unit
(No. 1)
L
Power supply
L
N
220 – 240V ~50/60Hz
N
Ground
B
U1
Remote
U2
D
controller
Ground
WHT
1 1 R1
BLK R2
2 2
Ground
C
Indoor unit
Ground
(No. 2)
L
Power supply
Ground
L
N
220 – 240V ~50/60Hz
N
Ground
B
U1
Remote
Ground
U2
controller D
WHT 1 1 R1
BLK 2 2 R2
Ground
C
Indoor unit
Group control:
(No. 3)
L
Power supply
L
N
220 – 240V ~50/60Hz
N
Ground
B
Ground
E U1
U2
R1
R2
Ground
C
Indoor unit
(No. n)
L
Power supply
L
N
220 – 240V ~50/60Hz
N
Ground
Ground
B
U1
Remote
U2
controller D
WHT 1 1 R1
BLK 2 2 R2
NOTE
(1) Refer to Section 4-2. "Recommended Wire Length and
Wire Diameter for Power Supply System" for the expla-
nation of "A," "B," "C," "D," "E," and "F," in the above
diagram.
(2) The basic connection diagram of the indoor unit shows the
terminal boards, so the terminal boards in your equipment
may differ from the diagram.
(3) Refrigerant Circuit (R.C.) address should be set before
turning the power on.
(4) Regarding R.C. address setting, refer to the installation
instructions supplied with the outdoor unit. Auto address
setting can be executed by remote controller automati-
cally.
ex.) MF1 Type
Outdoor unit
INV unit
A
C L1
Power supply
L1
1 L2
L2 380 – 415V, 3 N~, 50Hz
2 L3
L3
N
N
3
4
Ground
F Inter-outdoor-unit control wiring
Outdoor unit
INV unit
A
L1
Power supply
L1
L2
380 – 415V, 3 N~, 50Hz
L2
L3
3
L3
N
4
N
Ground
7P terminal board
1(L) 2(N) U1 U2 R1 R2
Power Unit Remote
supply control control
line line
D1, L1 Type
5P terminal board
Power Unit
supply control
line
K1 Type
6P terminal board
L N U1 U2 R1 R2
Power Unit Remote
supply control control
line line
P1, R1 Type
30