Panasonic Urban Multi MX1 Series Manual page 36

Installation 1
b) When cable more than 1.25 mm² is used
c) For multi-core cable
d) In the case of a remote controller with a three way selector for cooling, heating and ventilation, twin core
e) Since there is a considerable risk of mixing high (220 to 240V) and low voltages in the case of, for
f) Other important points
1. The refrigerant circuit and the indoor/outdoor connecting cables must correspond exactly.
2. A suitable gap must be left between the control cables and the power supply cables where these are
Power Supply 1. Choosing a circuit breaker
(Cabling of Main
The power supply work must conform to local regulations. In Japan, the relevant regulations are the MITI
Power Supply)
ordinance determining technical standards for electrical equipment, and the Internal Wiring Provisions.
a) The indoor unit circuit breakers
Branch circuit facility (Internal wiring provisions
305-2)
The motors must be set up with a dedicated branch
circuit for each unit. However, where they
correspond to any of the following situations, this
limitation does not apply.
1 When used in a 15A branch circuit of a 20A
Note: It is recommended that the total rated
capacity of the motors set up in a 15A branch circuit
or a 20A circuit breaker branch circuit should be no
more than 2.2kW.
36
When wiring indoor units together, the terminal block will not be able to accommodate 2 cables
simultaneously if the cables are larger than 1.25 mm².
The greater play between wires, the more the transmitted wave is distorted and transmission
destabilized.
cable should be used when the ventilation mode is not required and three core cable should be used
when three way selection is required.
example, a PCB for remote control, multiple core cable must not be used.
(Internal wiring regulations and dielectric strengths of cables are relevant here.)
laid alongside each other. (See "Separation of control and power supply cables" on page 37)
In accordance with the provisions for internal wiring (JEAC8001-1986), power may be supplied by
means of crossover lines between the indoor units in a single system branch circuit.
circuit breaker branch circuit
PACD011001G2 / PACD011004G3
Urban Multi Inverter "MX1" Series