Toshiba MMC-UP0151HP-E Installation Manual page 12

<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 (L2, L3)
(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.
Central control device
<Other than U series>
Outdoor unit
(SMMS-i)
(SMMS-e)
(MiNi SMMS)
etc.
<U series>*
Indoor unit
<U series>*
Remote controller
* Even if the indoor unit and the remote controller are "other than U series", the wiring
specifi cation are the same.
21-EN
1.25 mm² (Up to 1000 m)
Wire size :
2.0 mm² (Up to 2000 m)
Wire size : 1.25 to 2.0 mm² (Up to 100 m)
[Communication line]
(L1+L2+L3) = Up to 2000 m
– 11 –
Remote controller wiring
• 2-core with non-polarity wire is used for wiring of the remote controller wiring and group remote controllers wiring.
Remote controller wiring, remote controller inter-unit
wiring
Total wire length of remote controller wiring and remote
controller inter-unit wiring = L + L1 + L2 + ... Ln
Total wire length of remote controller inter-unit wiring = L1 + L2 + ... Ln
CAUTION
The remote controller wire (Communication line) and AC 208-240V 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 6 Electrical connection.
Indoor unit
Remote
L
controller
L1
wiring
Remote
controller
Max. number of connectable indoor units, and communication type
Outdoor unit
U series
Indoor unit
U series
Remote controller
U series
Communication type
TU2C-Link
Max. number of connectable
16
unit
: Other than U series
Wire size: 0.5 mm² to 2.0 mm²
In case of wired type only
In case of wireless type
included
Indoor unit Indoor unit Indoor unit
L2 Ln
Remote controller inter-unit wiring For number of max. connectable
units, refer to the following table.
Unit type
U series U series U series
U series U series U series
U series U series
TCC-Link
8
Up to 500 m
Up to 400 m
Up to 200 m
U series
22-EN