Toshiba MMY-MUP0801HT8P-E Installation Manual page 28

Table-1 Uv line and Uc line
Wiring 2-core, non-polarity
Type Shield wire
Size/Length 1.0 to 1.5 mm² : Up to 1000 m
Table-2 Uh line
Wiring 2-core, non-polarity
Type Shield wire
1.0 to 1.5 mm² : Up to 1000 m
Size/Length
2.0 mm²
Table-3 Remote controller wiring
Wiring 2-core, non-polarity
Size 0.5 mm² to 2.0 mm²
• Up to 500 m
Length • Up 400 m in case of two remote controller in group control.
• Up to 200 m total length of communication wiring between indoor units (L6)
• U (v, h, c) line means of control wiring.
Uv line: Between indoor and outdoor units.
Uh line: Central control line.
Uc line: Between outdoor and outdoor units.
<U series>
Central control device
<U series>
Outdoor unit
(SMMS-u)
<U series>*
Indoor unit
<U series>*
Remote controller
* Even if the indoor units, the remote controllers, and the central control device are models other than U series,
their system diagrams for the wiring specifications are the same as the system diagram above.
53-EN
: Up to 2000 m
Uh
U3 U4
U3 U4
U3 U4 U3 U4 U3 U4
U4 U3
Uh Uh Uh
Uv Uc Uv Uc Uv Uc
U1 U2 U1 U2 U1 U2
U2 U5 U6 U1 U5 U6 U5 U6
U1 U2 U1 U2 U1 U2
U4 U4 U4
Uv Uv Uv
A B A B A
U6 U6
– 27 –
REQUIREMENT
• For the central control line (L1) when U-series outdoor units and outdoor units other than U-series are
connected to the central control device, follow the communication wiring specifications for outdoor unit other
than U-series.
• Using the same wire type and size, wire each line below.
If the different wire types and sizes are mixed in each line, communication trouble is caused.
• Central control line and wiring between indoors and outdoor units other than U-series
• Uv line (wiring between indoor and outdoor units) and Uc line (wiring between outdoor and outdoor units) in
U-series
• Wiring between outdoor and outdoor units other than U-series
• For communication wiring specifications for outdoor unit other than U-series, refer to the Installation Manual
attached to the outdoor unit to be connected.
[Uh-line and line / wiring between outdoor and outdoor units other than U series]
(L1 + L5 + L6)
UP to 2000 m
[Uv line and Uc line in U series]
(L2)
Up to 1000 m
(L3 + L4)
Up to 1000 m
[Between outdoor and outdoor units other than U series]
(L7)
UP to 100 m
<Other than U series>
Outdoor unit
(SMMS-i)
(SMMS-e)
(MiNi SMMS)
etc.
<U series>*
U1 U2
U4
Indoor unit
Uv
B A B
U6 U6
<U series>*
Remote controller
U3 U4 U3 U4 U3 U4
U4 U3
U1 U2 U2 U5 U6 U1 U1 U2 U5 U6 U1 U2 U5 U6
U1 U2 U4 U1 U2 U4 U1 U2 U4
Uv Uv Uv
A B A B A
U6 U6
U1 U2 U4
Uv
B A B
U6 U6
54-EN