Electrical Work - Mitsubishi Electric PURY-WP-YJM-A Data Book

1. Electrical work

1-1. General cautions
I. 1. Electrical work
Follow ordinance of your governmental organization for technical standards relating to electrical equipment, wiring
regulations, and guidance of each electric power company.
Wiring for control (hereinafter referred to as transmission cable) shall be (50mm[1-5/8in.] or more) apart from power source
wiring so that it is not influenced by electric noise from power source wiring. (Do not insert transmission cable and power
source wire in the same conduit.)
Be sure to provide designated grounding work to outdoor unit.
Give some allowance to wiring for electrical part box of indoor and outdoor units, because the box is sometimes removed
at the time of service work.
Never connect 380~415V(220~240V) power source to terminal block of transmission cable. If connected,electrical parts
will be damaged.
Use 2-core shield cable for transmission cable. If transmission cables of different systems are wired with the same
multiple-core cable, the resultant poor transmitting and receiving will cause erroneous operations.
When extending the transmission line, make sure to extend the shield cable as well.
Outdoor
unit
OK
2-core shield cable
2-core shield cable
Indoor unit
Remote
controller
HBC controller
SYSTEM DESIGN
Outdoor
unit
NO
Multiple-
core cable
HBC controller
Indoor unit
Remote
controller
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