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4
Wiring design
4-4.Design of control wiring
wiring
Summary of control
3-phase, 380 V, 60 Hz
3-phase, 380 V, 60 Hz
Communication wiring and central control wiring use 2-core non-polarity wires.
Use 2-core shield wires to prevent noise trouble.
In this case, for the system grounding, close (connect) the end of shield wires, and isolate the end of terminal.
Use 2-core non-polarity wire for remote control. (A, B terminals)
Use 2-core non-polarity wire for wiring of group control. (A, B terminals)
U1 U2 U3 U4
U1 U2
U3 U4
U1 U2 A B
2
U
B
1
U
A
U2
U1
A
2
U
B
U1
A B
B
A
B
A
B
A
Outdoor unit
Central control
Communication wiring between indoor and outdoor units
(Shield wire)
Communication wiring between indoor units (Shield wire)
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Remote control
Remote control
Remote control
(Group control)
E16-3P1_databook.book Page 24 Tuesday, December 20, 2016 3:02 PM