Toshiba MMU-UP0071MH-UL Installation Manual page 11

 Communication line
TU2C-Link models (U series) can be combined with TCC-Link models (other than U series).
For details of communication type, refer to the following table.
Communication type and model names
Communication TU2C-Link
type (U series and future models)
MMY-MUP
Outdoor unit
This letter indicates U series model.
MM -UP
Indoor unit
This letter indicates U series model.
RBC-A U
Wired remote
control
This letter indicates U series model.
RBC-AXU
Wireless remote
control kit &
This letter indicates U series model.
receiver unit
TCB-TC U
Remote sensor
This letter indicates U series model.
U series outdoor unit: SMMS-u, SHRM-u
Other than U series outdoor unit: SMMS-i, SMMS-e, SHRM-e etc.
19-EN
TCC-Link
(Other than U series)
Other than U series
MMY-MAP
Other than U series
MM -AP
Other than U series
Other than U series
Other than U series
– 10 –
<In the case of combining with U series outdoor unit>
Follow the wiring specifications in the table below even when units other than U series are mixed in the indoor units
and remote controls to be connected.
Uv line and Uc line (L2, L3, L4)
Wire size:
(2-core shield wire, non-polarity)
Uh line (L1)
Wire size:
(2-core shield wire, non-polarity)
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.
Uv Uc
• line and line are independent from another refrigerant line. Total length of
in each refrigerant line is up to 3280'10" (1000 m).
REQUIREMENT
For connection of Uv line / Uc line or Uh line, wire each line using wires with the same type and size. If different
wire types and size are mixed and used in a system, communication trouble is caused.
<U series>*
Uh
Central control device
U3 U4
U3 U4
<U series>
U3 U4
U4
Uh
Outdoor unit
Uv Uc
U1 U2 U2 U5 U6
<U series>*
U1 U2 U4
Indoor unit
Uv
A B
U6
<U series>*
Remote control
*Even if the indoor units, the remote controls, 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.
AWG17 to AWG15 (Up to 3280'10" (1000 m))
AWG17 to AWG15 (Up to 3280'10" (1000 m))
AWG14 (Up to 6561'8" (2000 m))
Uv Uc (L3 + L4)
and lines
[Uh line]
L1 = Up to 6561'8" (2000 m)
[Uv and Uc line]
L2 = Up to 3280'10" (1000 m)
(L3 + L4) = Up to 3280'10" (1000 m)
U3 U4 U3 U4
U3
Uh Uh
Uv Uc Uv Uc
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 B
U6 U6 U6
EN
20-EN