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10. ELECTRICAL WORK
10-1. General Cautions
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
cable
) shall be (50mm[1-5/8in] or more) apart from power source
cable
wiring so that it is not influenced by electric noise from power source wiring. (Do not insert transmission
and power
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, 460V 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
Heat
Indoor unit
Indoor unit
source
source
OK
NO
unit
unit
2-core shield cable
Multiple-
core cable
Remote
Remote
controller
controller
BC controller
BC controller
2-core shield cable
WR2-113
PQRY-P-T(S)LMU, Y(S)LMU (April 2017 Ver2)
© 2017 Mitsubishi Electric US, Inc.
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