Toshiba RAV-HM901FT-E Installation Manual page 18

 Communication type
TU2C-Link can be used with these models.
If the indoor unit and the connected remote controller / remote sensor are all TU2C-Link models, TU2C-Link
communication will be performed automatically.
For details of communication type, refer to the following table.
Communication type and model names
Communication
TU2C-Link
type
Indoor unit RAV-HM series model
RBC-A U
Wired remote
controller
This letter indicates U series model.
Wireless remote RBC-AXU
controller kit &
This letter indicates U series model.
receiver unit
TCB-TC U
Remote sensor
This letter indicates U series model.
CAUTION
In the following cases, change the communication type to TCC-Link with the wired remote controller by referring to the
procedure of Communication type procedure of "8 Applicable controls" for normal operation.
• When performing group control in combination with the indoor unit dedicated to TCC-Link (other than RAV-HM
series).
• When connecting to the central control device dedicated to TCC-Link.
Indoor unit Indoor unit
L
Remote
controller
L1
wiring
Remote
Remote controller inter-unit wiring
controller
Max. number of connect-able indoor units, and communication type
Indoor unit
Remote controller
Remote sensor
Communication type
Max. number of connect-able units
: Other than RAV-HM U series
and
33-EN
TCC-Link
Other than RAV-HM series
Other than U series
Other than U series
Other than U series
Indoor unit Indoor unit
L2 Ln
For number of Max. connect-able units,
refer to the following table.
Unit type
RAV-HM RAV-HM
U series U series
TU2C-Link TCC-Link
16 8
– 17 –
 Wiring between indoor unit and outdoor unit
1. Figure below shows the wiring connections between the indoor and outdoor units and between the indoor units
and remote controller. The wires indicated by the broken lines are provided at the locally.
2. Refer to the both indoor and outdoor unit wiring diagrams.
3. For details, refer to the Installation Manual for outdoor unit to be connected.
Wiring diagram (Example)
Single operation
Remote controller
A B
Indoor side
1 2 3
Indoor / Outdoor
connecting wires
1 2
3
Outdoor side
Power supply
Simultaneous triple and double twin operation
Remote
Remote controller
controller
inter-unit wiring
A B
Indoor side
1 2 3
Indoor side
Indoor / Outdoor
connecting wires
Indoor power
inter-unit wiring
1 2 3
Outdoor side
Power supply
* Use 2-core shield wire (MVVS 0.5 to 2.0 mm² or more) for the remote controller wiring in the simultaneous triple
and simultaneous double twin systems to prevent noise problems. Connect both ends of the shield wire to earth
leads.
* Connect earth wires for each indoor unit in the simultaneous triple and simultaneous double twin systems.
NOTE
• For the simultaneous twin, simultaneous triple and simultaneous double twin connection, attach the crimp terminal to
end of the connecting wire.
• Do not connect wire ( ③ - ③ ) between header unit and follower unit for simultaneous operation (twin, triple, or double
twin). Wiring by mistake cause indoor units not to operate simultaneously and a check code "E18" appears.
Simultaneous twin operation
Remote controller
Indoor side
Remote controller
A inter-unit wiring
B
1 2 3 Indoor side
Indoor / Outdoor
connecting wires
Indoor power
1 2 3
inter-unit wiring
Outdoor side
Power supply
Remote Remote
controller
controller
inter-unit inter-unit
wiring
wiring
A B A B
1 2 3 1 2 3
Indoor side
Indoor side
Indoor power
Indoor power
inter-unit wiring
inter-unit wiring
Triple
Double twin
A
B
1 2 3
A B
1 2 3
34-EN