Toshiba RAV-SM307MUT-E, Installation Manual

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 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 or dot-and-dash lines are provided at the locally.
2. Refer to the both indoor and outdoor unit wiring diagrams.
3. The power of the indoor unit is supplied from the outdoor unit.
Wiring diagram
* Use 2-core shield wire (MVVS 0.5 to 2.0 mm 2 or more) for the remote controller wiring in the simultaneous twin,
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.
Single system Simultaneous twin system
Simultaneous triple and double twin system
A B
1
1
2
2
3
3 Outdoor side
Power supply
Remote controller
Remote controller wiring
Indoor side
Indoor / Outdoor
connecting wires
A B
1 2 3
A B
1
1
2
2
3
3
Power supply
Remote controller
inter-unit wiring
Indoor
side
Indoor power
inter-unit wiring
Outdoor side
Remote controller
Remote controller wiring
Indoor side
Indoor / Outdoor connecting
wires
A B
1 2 3
A B
1 2 3
A B
1 2 3
A B
1 2 3
1 2 3
Power supply
Remote controller
inter-unit wiring
Indoor side
Indoor power
inter-unit wiring
Remote controller
inter-unit wiring
Indoor side
Remote controller
inter-unit wiring
Indoor side
Triple
Double twin
Indoor power
inter-unit wiring
Indoor power
inter-unit wiring
Outdoor side
Remote controller
Remote controller
wiring
Indoor side
Indoor / Outdoor
connecting wires
 Wire connection
REQUIREMENT
• Connect the wires matching the terminal numbers. Incorrect connection causes a trouble.
• Route the wire through the wire connection port of the indoor unit.
• The low-voltage circuit is provided for the control wire and remote controller wire. (Do not connect the high-voltage
circuit.)
1. Loosen the two screws, and remove the cover of electrical control box by sliding in the direction of the arrow.
2. Connect the Indoor / Outdoor connecting wires and remote controller wire to the terminal block of the electrical
control box.
3. Tighten the screws of the terminal block, and fix the wires with cord clamp attached to the electrical control box.
(Do not apply tension to the connecting section of the terminal block.)
4. Mount the cover of the electrical control box without pinching wires.
(Mount the cover after wiring on the ceiling panel.)
1
2
3
1
2
3
A
B
A
B
Earth screw
Cord clamp
*1
Indoor / Outdoor connecting wires
Remote controller wires (A, B terminals)
Cord clamp
*1
Select side C or D for the cord clamp position referring to the
following table according to the cable type and diameter.
* Cord clamp can be attached on either right or left side.
When twin system are connected, clamp two cables with one cord
clamp.
Wire type Specification
Cord clamping
position
Cabtyre cable 3-core stranded wire 2.5 mm² Side D
Cabtyre cable 4-core stranded wire 1.5 mm² Side C
Side D
(Space: 8.5 mm)
Side C
(Space: 4 mm)
Hook part
Screws
Cover of electrical control box
29-EN 30-EN