Toshiba MMY-MAP0806HT8P-E Installation Manual page 72

Circuit breaker
(Earth leakage breaker)
141-EN
1117101201-3 EN.indd 71 1117101201-3 EN.indd 71
L L L N L L L N L L L N
1 2 3 1 2 3 1 2 3
Main switch
(Fuse)
– 71 –
Specifications for communication wiring
¿ Design of communication wiring
Summary of communication wiring
Header outdoor
Central control
controller U1 U2 S U3 U4 U5 U6 S
U1 U2
U3 U4
Communication wiring between indoor and outdoor units (Shield wire)
Communication wiring between indoor units (Shield wire)
U 1 U 2 A B
Indoor unit Indoor unit
A B
Remote controller
• Communication wiring and central control wiring use 2-core non-polarity wires.
Use 2-core shield wires to prevent noise trouble.
In this case, both ends of the communication wire must be grounded.
• Use 2-core non-polarity wire for remote controller. (A, B terminals)
Use 2-core non-polarity wire for wiring of group control. (A, B terminals)
Follower outdoor
U1 U2 S U3 U4 U5 U6 S
Communication wiring between outdoor units (Shield wire)
U 1 U 2 A B U1 U 2 A B
Indoor unit Indoor unit
A B A B
Remote controller Remote controller
(Group control)
U1 U 2 A B
142-EN
8/8/2559 BE 3:49 PM 8/8/2559 BE 3:49 PM