Toshiba Carrier MMY-MAP0726HT6P-UL Installation Manual page 17

Power supply for
■ Specifi cations for control wiring
Header outdoor
Central control U1 U2 S U3 U4 U5 U6 S
U1 U2
U3 U4
Control wiring between indoor and outdoor units (Shielded wire)
Central control
Control wiring between indoor units (Shielded wire)
wiring
U1 U2 A B
Indoor unit Indoor unit
A B
Remote control
1. All system interconnecting and central control wiring should be 2 conductor shielded cable.
2. On the header unit the control wire shield and the central control wire shield should both be connected to the
same ground screw in the header unit.
3. The remote control wiring can be 2 conductor un-shielded cable.
4. All system interconnecting and control wiring should be sized per table 5, 6 and 7.
31-EN
outdoor units
Incorrect
Follower outdoor
U1 U2 S U3 U4 U5 U6 S
Control wiring between outdoor units (Shielded wire)
U 1 U 2 A B U1 U2 A B
Indoor unit Indoor unit
A B A B
Remote control Remote control
(Group control)
Central
control
U1 U2
U3 U4
Header
unit
U3 U4
Outdoor unit
U1 U2 U5 U6
L1
U1 U2
Indoor unit
A B
Remote control
Table-5 Control wiring between indoor and outdoor units (L1, L2, L3), Central control wiring (L4)
Wiring
Type
Size/Length
(*1): Total length of control wiring length for all refrigerant circuits (L1 + L2 + L3 + L4)
U 1 U 2 A B
Table-6 Control wiring between outdoor units (L5)
Wiring
Type
Size/Length
Table-7 Remote control wiring (L6, L7)
Wire
Size
Length
– 16 –
Super modular multi system
Table-5
L4
Header Follower
unit unit
U3 U4 U3 U4 U3 U4
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-7
Remote control
2-core
Shielded cable
AWG16: Up to 3280 ft (1000 m) AWG14: Up to 6560 ft (2000 m) (*1)
2-core
Shielded wire
AWG16 to AWG14 / Up to 330 ft (100 m) (L5)
2-core
AWG20 to AWG14
• Up to 1640 ft (500 m) (L6 + L7)
• Up 1310 ft (400 m) in case of wireless remote control in group control.
• Up to 660 ft (200 m) total length of control wiring between indoor units (L6)
Header Follower
unit unit
U3 U4 U3 U4
U1 U2 U5 U6 U1 U2 U5 U6
Table-5 Table-6
L3
U1 U2 U1 U2 U1 U2
A B A B A B
L7
L6
Remote control
EN
FR
32-EN