Specifications

WR2SD-2
WR2-SERIES SYSTEM DESIGN (June 2010)
WR2-SERIES
SYSTEM DESIGN
1. ELECTRICAL WORK
1-1. General Cautions
OK NO
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 ) shall be (50mm[1-5/8in] or more) apart from power source
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 . If connected,electrical parts
will be burnt out.
Use 2-core shield cable for transmission . If transmission of different systems are wired with the same
multiplecore
cable, the resultant poor transmitting and receiving will cause erroneous operations.
Heat
source
unit
Heat
source
unit
Indoor unit
Remote
BC controller
controller
2-core shield cable
2-core shield cable
Remote
controller
Indoor unit
Multiple-
core cable
BC controller
wiring so that it is not influenced by electric noise from power source wiring. (Do not insert transmission and power
cable
cable
cable
cables
cable