Toshiba RAV-SM407CTP-E Installation Manual page 14

Wiring between indoor unit and outdoor unit
• 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 or dot-and-dash lines are provided at the locally.
• Refer to the both indoor and outdoor unit wiring diagrams.
Wiring diagram
Single system
Remote controller
Remote controller wiring
A B
Indoor side
1 2 3
System
interconnection wires
Outdoor side 1 2 3
Power supply
Simultaneous triple and double twin system
Remote controller
Remote controller
inter-unit wiring
Remote controller
wiring
A B
Indoor side
Indoor side
1 2 3
System
interconnection wires
Indoor power
Outdoor side 1 2 3
inter-unit wiring
Power supply
* Use 2-core shield wire (MVVS 0.5 to 2.0 mm
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 twin, simultaneous triple and simultaneous double
twin systems.
25-EN
Simultaneous twin system
Remote controller
Remote controller inter-unit wiring
Remote controller wiring
A B
Indoor side
Indoor
side
1 2 3
System interconnection wires
Indoor power
Outdoor side
1 2 3
inter-unit wiring
Power supply
Remote controller Remote controller
inter-unit wiring inter-unit wiring
A B A B
Indoor side Indoor side
1 2 3
1 2 3
Indoor power Indoor power
inter-unit wiring inter-unit wiring
Triple
Double twin
2 or more) for the remote controller wiring in the simultaneous twin,
– 13 –
◆ Wire connection
REQUIREMENT
• Connect the wires matching the terminal numbers. Incorrect connection causes a trouble.
• Pass the wires through the bushing of wire connection holes of the indoor unit.
• Keep a margin (Approx. 100 mm) on a wire to hang down the electrical control box at servicing.
• The low-voltage circuit is provided for the remote controller. (Do not connect the high-voltage circuit)
1
Loosen the cover mounting screws (2 positions) of the electrical control box, and then remove
the cover.
2
Connect the system interconnection wires and the remote controller wire to the terminal block of
the electrical control box.
A B
3
Tighten screws of the terminal block securely, and fix the wires with code clamp attached to the
1 2 3
electrical control box. (Do not apply tension to the connecting section of the terminal block.)
4
Mount the cover of the electrical control box so that it does not pinch the wires.
A B
1 2 3
Electrical control
box cover
▼ Connecting the system interconnection wire
<Single connection>
Terminal block of
power supply
System interconnection wires
Two screws
Remote controller
terminal block
Earth
screw
1 2 3
A B
Clamp base
Cord clamp
P.C. board
Terminal block
System
interconnection wires
Run the system
interconnection wire
here through the clamp
base and fix it with a
cord clamp.
26-EN