Toshiba RAV-HM301U1TP-E Installation Manual page 16

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
Single system
Remote controller
Remote controller wiring
A B
Indoor side
1 2 3
Indoor / Outdoor
connecting wires
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 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 systems.
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Simultaneous twin system
Remote controller
Remote controller
inter-unit wiring
Remote controller wiring
A B
Indoor side
Indoor
side
Indoor / Outdoor connecting 1 2 3
wires
Indoor power
Outdoor side 1 2 3
inter-unit wiring
Power supply
– 15 –
Wire connection
REQUIREMENT
Be sure to connect the wires matching the terminal numbers. Incorrect connection causes a trouble.
Be sure to pass the wires through the bushing of wiring connection port of the indoor unit.
Keep a margin (Approx. 100 mm) on a wire to hang down the electrical control box at servicing, etc.
The low-voltage circuit is provided for the remote controller. (Do not connect the high-voltage circuit)
Make a loop on the wire for margin of the length so that the electrical control box can be taken out during
servicing.
1. Remove the cover of the electrical control box by taking off the mounting screws and pushing the hooking
section. (The cover of the electrical control box remains hanged to the hinge.)
2. Connect the power supply wire and remote controller wire to the terminal block of the electrical control box.
3. Tighten the screws of the terminal block, and fi x the wires with cord clamp attached to the electrical control box.
(Do not apply tension to the connecting section of the terminal block.)
A B
4. Mount the cover of the electrical control box without pinching wires.
1 2 3
(Mount the cover after wiring on the ceiling panel.)
Earth wire
Louver connector
Cord clamp
(CN510:White)
Hinge
Side D (Space: 8.5 mm)
Screw
1 2 3
* Cable clamp can be attached on left side.
Cabtyre
cable
Cabtyre
Power supply wire cable
Remote controller
terminal block
A B
1 2 3
Power supply terminal block
Side C (Space: 4 mm)
Wire Cable clamping
Specification
type position
4-core stranded
Side D
wire 2.5 mm²
4-core stranded
Side C
wire 1.5 mm²
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