Toshiba MMY-MAP0804HT8-E Installation Manual page 21

SMMS-i
Be sure to keep the rule of below tables about size and length of communication wiring.
Central
control
controller
U1 U2
U3 U4
Header
Header
unit
unit
U3 U4 U3 U4
Outdoor unit
U1 U2 U5 U6 U1 U2 U5 U6
L1
U1 U2 U1 U2 U1 U2
Indoor unit
A B A B
Table-3
Remote controller
Remote controller
Table-1 Communication wiring between indoor and outdoor units (L1, L2, L3), Central control wiring
(L4)
Wiring 2-core, non-polarity
Type Shield wire
Size/Length 1.25 mm 2 : Up to 1000 m/2.0 mm
(*1): Total length of Communication wiring length for all refrigerant circuits (L1 + L2 + L3 + L4)
Table-2 Communication wiring between outdoor units (L5)
Wiring 2-core, non-polarity
Type Shield wire
Size/Length 1.25 mm 2 to 2.0 mm
Table-3 Remote controller wiring (L6, L7)
Wire 2-core, non-polarity
2
Size 0.5 mm to 2.0 mm
• Up to 500 m (L6 + L7)
Length • 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)
39-EN
Installation Manual
Super modular multi system
Table-1
L4
Header
Follower
Follower Follower
unit
unit
unit unit
U3 U4 U3 U4 U3 U4 U3 U4
U1 U2 U5 U6 U1 U2 U5 U6 U1 U2 U5 U6 U1 U2 U5 U6
L5 Table-1 Table-2
L2 L3
U1 U2 U1 U2 U1 U2
A B A B A B A B
L7
Remote controller
2 : Up to 2000 m (*1)
2 /Up to 100 m (L5)
2
SMMS-i
◆ Group control through a Remote Controller
Group control of multiple indoor units (8 units) through a single remote controller switch
Follower
unit
Remote controller
U3 U4
U1 U2 U5 U6
Connection of power wires and communication wires
Remove knockouts on the piping/wiring panel on the front of the unit and the panel on the bottom to get the power and
communication wires through the holes.
U1 U2 U1 U2
A B A B
L6
NOTE
Be sure to separate the power wire and communication wires.
– 20 –
Indoor unit
No.1
No.2 No.3 No.4
A B A B A B A B
(A.B)
Piping/wiring panel
Knockout for the
communication wire
Knockout for the power
supply wire
Knockout for the power
wire
Installation Manual
No.7 No.8
A B A B
EN
40-EN