Electrical Wiring - Panasonic S-22MU1E51 Technical Data Manual

3. Electrical Wiring

3-1. 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, circuit breaker and
earth leakage 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
1
dangerous. The manufacturer will accept no responsibility
for any damage or misoperation that occurs as a result of
such unauthorized changes.
3-2. Recommended Wire Length and Wire Diameter for Power Supply System
2
Outdoor unit
U-8ME1E81
U-10ME1E81
3
U-12ME1E81
U-14ME1E81
U-16ME1E81
U-18ME1E81
U-20ME1E81
4
Indoor unit
Type
K2
5
Y2
K1
D1, L1, U1, Y1, T1,
F1, M1, P1, R1
E1 (73, 106, 140)
E1 (224)
6
E1 (280)
Control wiring
(C) Inter-unit (between outdoor and indoor units) control wiring
7 0.75 mm² (AWG #18)
Use shielded wiring*
Max. 1,000 m
* With ring-type wire terminal.
NOTE
8
(E) Control wiring for group control
0.75 mm² (AWG #18)
Max. 200 m (Total)
9
(A) Power supply
Time delay fuse or
Wire size Max. length
4 mm² 56 m
4 mm² 46 m
6 mm² 65 m
10 mm² 91 m
10 mm² 75 m
10 mm² 70 m
10 mm² 58 m
(B) Power supply
Minimum 2 mm² 2.5 mm²
Max. 150 m
Max. 130 m
Max. 150 m
Max. 130 m
Max. 60 m
Max. 50 m
Max. 30 m
Use shielded wiring*
or
(F) Inter-outdoor unit control wiring
0.75 mm² (AWG #18)
Use shielded wiring
(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.
(10) Use a waterproof conduit for outdoor unit wiring to avoid
damaging the wire and to prevent accumulation of liquid
inside the unit.
circuit capacity
Wire size
25 A 6 mm²
25 A
6 mm²
35 A 6 mm²
or
35 A 10 mm²
45 A 10 mm²
50 A 10 mm²
50 A 10 mm²
Time delay fuse or
circuit capacity
15 A
15 A
10 – 16 A
10 – 16 A
10 – 16 A
10 – 16 A
10 – 16 A
2.0 mm² (AWG #14)
Max. 2,000 m
Max. 300 m
2-26
Design of 2WAY SYSTEM
(A) Power supply
Time delay fuse or
circuit capacity
Max. length
84 m
69 m
65 m
91 m
75 m
70 m
58 m
(D) Remote control wiring
0.75 mm² (AWG #18)
Max. 500 m
35 A
35 A
35 A
50 A
50 A
50 A
50 A