Electrical Work; 10-1.General Cautions - Mitsubishi Electric CITY MULTI PQRY-P72-336ZLMU-A1 Data Book

10. ELECTRICAL WORK

10-1. General cautions
10. EL ECTRICAL WORK
Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring
regulations, and guidance of each electric power company.
Wiring for control (hereinafter referred to as transmission
wiring so that it is not influenced by electric noise from power source wiring. (Do not insert transmission
source wire in the same conduit.)
Be sure to provide designated grounding work to heat source unit.
Give some allowance to wiring for electrical part box of indoor and heat source unit, because the box is sometimes
removed at the time of service work.
Never connect 100V, 208-230V, 575V 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
multiplecore 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.
Heat
source
unit
OK
2-core shield cable
2-core shield cable
MEES21K047
cable
Indoor unit
Remote
controller
BC controller
) shall be (50mm[1-5/8in] or more) apart from power source
Heat
source
unit
NO
Multiple-
core cable
BC controller
WR2-Series-575V
cable and power
Indoor unit
Remote
controller
93