Electrical Wiring; General Precautions On Wiring; Recommended Wire Length And Wire Diameter For Power Supply System - Panasonic S-22MY2E5 (CZ-KPY3) Series Installation Instructions Manual

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 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 designated by the
manufacturer, because special-purpose tools are required.
4-2. Recommended Wire Length and Wire Diameter
for Power Supply System
Model
Power supply
name
Indoor unit 220V-240V~
Model Leakage current
name breaker
Indoor unit 15A
(C) Inter-unit (between outdoor and
indoor units) control wiring
Model
name
Control wiring
U1 U2
0.75 mm 2 (AWG#18)
Indoor unit
Use shielded wiring *
(D) Remote control wiring
Model
Remote control
name
wiring
R1 R2
0.75 mm
Indoor unit
(AWG#18)
(E) Control wiring for group control
Model
name
Control wiring
0.75 mm
Indoor unit
(AWG#18)
(F) Inter-outdoor unit control wiring
Model
name
Control wiring
0.75 mm 2 (AWG#18)
Indoor unit
Use shielded wiring
*1 This maximum length shows a 2% voltage drop
*2 With ring-type wire terminal
9
(B) Power supply cable
Minimum power
supply cables Length
(m)*
L N
2 mm 2 Max. 130
Circuit breaker
(Minimum capacity)
Switch Fuse
15A 15A
Length (m)
Max. 1000
2
Length (m)
2
Max. 500
Length (m)
2
Max. 200 (Total)
Length (m)
Max. 300
1