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4
–2. Wiring
4–2–1. Wiring method
All electrical work should be carried out by a suitably qualified technician. Failure to comply with this could result in
electrocution, fire, and death. All wiring must be conducted according to the national wiring regulations.
Notes:
● Disconnect power supply before connecting wires.
● Do not route wires near equipment generating noise.
● Do not bundle power cables and equipment cables together with other cables.
● Indoor unit-Equipment Controller cable, Wireless Interface cable, and sensor cables should be segregated from each
other until entry into the Equipment Controller. Also avoid running cables along metal surfaces.
● Use copper supply wires.
Wiring specification
Power cable
AWG 18–22
Equipment cable
Connect by caulking a round terminal
Outdoor temperature sensor cable
AWG 16–22 (Note: AWG 18 is recommended)
24V COM
CN105
CN90B
(WH)
CN460
(WH)
Ch2
Ch4
Ch1
Ch3
8
Ch1
Ch2
Ch3
Ch4
Outdoor
temperature
sensor*
*Optional parts
Wireless
Interface
24 V AC
Transformer
Connect to equipment
Note: Connect surge absorber
according to the load at site.
Indoor unit
Warning
BH79A350H01_en.indd 9
6/16/2017 9:13:57 AM