Toshiba MMY-MAP0806HT8P-E - Page 72

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L1L2L3 N
L1L2L3 N L1L2L
3
N
Circuit breaker
(Earth leakage breaker)
Main switch
(Fuse)
 Specifications for communication wiring
¿ Design of communication wiring
Summary of communication wiring
U1 U2
U3 U4
2UBABA2U1U U11U2 BA2UU1 BAU
AB AB AB
U1
U2
S
U3
U4
U5
U6
S
U1
U2
S
U3
U4
U5
U6
S
Header outdoor Follower outdoor
Central control
controller
Communication wiring between outdoor units (Shield wire)
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 controller Remote controller
Remote controller
(Group control)
• 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)
1117101201-3 EN.indd 711117101201-3 EN.indd 71 8/8/2559 BE 3:49 PM8/8/2559 BE 3:49 PM