Toshiba MMY-MAP0804FT8-E Installation Manual page 21

 Specifications for communication wiring
◆ Design of communication wiring
Summary of communication wiring
Outdoor unit
Header unit
Central remote
device (option)
U1 U2 U3 U4 U5 U6
U1 U2
U3 U4
Central control wiring (Shield wire)
Control wiring between indoor and outdoor units (Shield wire)
Control wiring between indoor units (Shield wire)
Flow selector unit Flow selector unit
CN02 CN02
CN81 CN81
U1 U2 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.
• Connecting the closed end terminal of shield wire.
(Connected to all connecting sections in each unit)
• 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)
• Control wire and power line wire between Flow selector unit and indoor unit are the accessory parts of Flow
selector unit. (Wire length : 6m)
If the length between indoor unit and Flow selector unit exceeds 5m, connect by using the Connection cable kit
sold separately (RBC-CBK15FE).
39-EN
Outdoor unit
Follower unit
U1 U2 U3 U4 U5 U6
Control wiring between outdoor units (Shield wire)
Flow selector unit Flow selector unit
CN02
CN02
CN81 CN81
U1 U2 A B U1 U2 A B
Indoor unit Indoor unit
A B A B
Remote controller Remote controller
(Group control)
Be sure to keep the rule of below tables about size and length of communication wiring.
Central
control
controller
U1 U2
U3 U4
Header
unit
U3 U4
Outdoor unit
U1 U2
L1
U1 U2
Indoor unit
A B
Remote controller
Table-1 Communication wiring between indoor and outdoor units (L1, L2, L3), Central control wiring
(L4)
Wiring
Type
U1 U2 A B
Size / Length
(*1): Total length of Communication wiring length for all refrigerant circuits (L1 + L2 + L3 + L4)
Table-2 Communication wiring between outdoor units (L5)
Wiring
Type
Size / Length
Table-3 Remote controller wiring (L6, L7)
Wire
Size
Length
– 20 –
Super modular multi system
Table-1
L4
Follower
Header Follower Follower
unit
unit unit unit
U3 U4 U3 U4 U3 U4 U3 U4
U5 U6 U1 U2 U5 U6 U1 U2 U5 U6 U1 U2 U5 U6 U1 U2 U5 U6
L5
L2
U1 U2 U1 U2 U1 U2 U1 U2
A B A B A B A B
Table-3
Remote controller
2-core, non-polarity
Shield wire
1.25 mm 2 : Up to 1000 m / 2.0 mm 2 : Up to 2000 m (*1)
2-core, non-polarity
Shield wire
2 2
1.25 mm to 2.0 mm / Up to 100 m (L5)
2-core, non-polarity
0.5 mm 2 to 2.0 mm 2
• Up to 500 m (L6 + L7)
• Up 400 m in case of wireless remote controller in group control.
• Up to 200 m total length of communication wiring between indoor units (L6)
Header Follower
unit
unit
U3 U4 U3 U4
U1 U2 U5 U6 U1 U2 U5 U6
Table-1 Table-2
L3
U1 U2 U1 U2 U1 U2
A B A B A B
L7
L6
Remote controller
40-EN