Electrical Wiring; General Precautions On Wiring; Recommended Wire Length And Wire Diameter For Power Supply System; Control Wiring - Panasonic S-22MU1E5A Technical Data Manual

1. Electrical Wiring

1-1. 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.
1
(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.
2

1-2. Recommended Wire Length and Wire Diameter for Power Supply System

Indoor unit
Type
3
K2
Y2
K1
U1
F2
4
T2

Control wiring

(C) Inter-unit control wiring
(between outdoor and indoor units)
5
0.75 mm² (AWG #18)
Use shielded wiring*
Max. 1,000 m
* With ring-type wire terminal.
NOTE
6
(E) Control wiring for group control
0.75 mm² (AWG #18)
Max. 200 m (Total)
7
8
9
(B) Power supply
Minimum 2 mm² 2.5 mm²
Max. 150 m
Max. 130 m
Max. 150 m
Max. 130 m
Max. 130 m
Max. 130 m
(D) Remote control 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.
Time delay fuse or
circuit capacity
15 A
15 A
10 – 16 A
10 – 16 A
10 – 16 A
10 – 16 A
0.75 mm² (AWG #18)
Max. 500 m
2-2
Design of VRF SYSTEM