Toshiba MML-UP0071H-E Installation Manual page 16

<In the case of combining with outdoor units other than Super Modular Multi System u series (SMMS-u)>
Control wiring between indoor units, and outdoor unit
(2-core shield wire, non-polarity)
Central control line wiring (L1)
(2-core shield wire, non-polarity)
Control wiring between outdoor units (L4)
(2-core shield wire, non-polarity)
• The length of the communication line (L1+L2+L3) means the total length of the inter-unit wire length between
indoor and outdoor units added with the central control system wire length.
REQUIREMENT
For connection of between indoor and outdoor units line / between outdoor and outdoor units line or central control
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
<Other than U series>
U3 U4
U4
Outdoor unit
(SMMS-i)
U1 U2
U2 U5 U6
(SMMS-e)
(MiNi SMMS)
etc.
<U series>*
U1 U2
U4
Indoor unit
Uv
<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.
29-EN
(L2, L3)
1.25 mm²
Wire size:
2.0 mm²
Wire size: 1.25 to 2.0 mm²
[Communication line]
(L1 + L2 + L3) = Up to 2000 m
L4 = Up to 100 m
U3 U4 U3 U4
U3
U1 U2 U1 U2
U1 U5 U6 U5 U6
U1 U2 U1 U2
U4 U4
Uv Uv
A B A B A B
U6 U6 U6
– 15 –
 Remote controller wiring
• 2-core with non-polarity wire is used for the remote controller wiring and group remote controllers wiring.
(Up to 1000 m)
Remote controller wiring, remote controller inter-unit
(Up to 2000 m)
wiring
(Up to 100 m)
Total wire length of remote controller wiring and
remote controller inter-unit wiring = L + L1 + L2 + ...
Ln
Max. length of each remote control wiring between indoor units = L1, L2, ... , Ln
CAUTION CAUTION
• The remote controller wire (Communication line) and AC 220 V to 240 V wires cannot be parallel to
contact each other and cannot be stored in the same conduits. If doing so, a trouble may be caused on
the control system due to noise or other factor.
• If U series models (TU2C-Link) are combined with models other than U series (TCC-Link), the wiring specifications
and maximum number of connectable indoor units will be changed. Pay attentions to their communication
specifications when carrying out the installation, maintenance, or repair. For its details, refer to the "Communication
line" in 7 Electrical connection.
Remote
controller
wiring
Max. number of connectable indoor units, and communication type
Outdoor unit
Indoor unit
Remote controller
Remote sensor
Communication type
Max. number of connectable
units
: Other than U series
U1 U2
U4
Uv
A B
U6 REQUIREMENT
After carrying out installation of additional indoor unit, relocation, or repairing, set the addresses again.
For its detail, refer to the Installation Manual attached to the outdoor unit.
Wire size: 0.5 mm² to 2.0 mm²
In case of one remote
controller
In case of two remote
controller
Indoor unit Indoor unit Indoor unit
L
L1 L2
Remote
Remote controller inter-unit wiring
controller
Unit type
U series U series U series U series
U series U series
U series U series
TU2C-Link
16
Up to 500 m
Up to 400 m
Up to 200 m
Indoor unit
Ln
For number of max. connectable units,
refer to the following table.
U series U series
U series U series
TCC-Link
8
30-EN