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3. Electrical Wiring
Example of Communication Cabling:
ATTENTION:
Disconnect all power at the main power source before performing electrical work. Failure to do this can result
in fire, damage to internal components, and severe or fatal electrical shock.
Controller
CN1
Use AWG 18 (0.82mm ) cable, (18-Gauge, 2-Conductor, Stranded Copper).
•
Communication cabling must be a minimum of 18-Gauge, 2-Conductor, Stranded Copper. Shielded cable must
be considered for applications and routing in areas of high electronic interference (EMI) and other sources of
potentially excessive electrical noise to reduce the potential for communication errors. When shielded cabling
is applied, proper bonding and termination of the cable shield is required as per Johnson Controls-Hitachi
Max. 16 Indoor Units
Electrical Box
of Indoor Unit
Terminal Board
A
B
M3.5
Screws
Electrical Box
of Indoor Unit
Terminal Board
A
B
M3.5
Screws
3. Electrical Wiring
Controller
(Secondary)
CN1
10
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