Toshiba RAV-HM401CTP-E Installation Manual page 17

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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 Simultaneous twin system
Remote controller
Remote controller wiring
A B
Indoor side
1 2 3
Indoor/Outdoor connecting
wires
1 2 3
Outdoor side
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
Indoor/Outdoor
Indoor power
connecting wires
1 2 3
inter-unit wiring
Outdoor side
Power supply
* Use 2-core shield wire (MVVS 0.5 to 2.0 mm or more) for the remote controller wiring in the simultaneous twin,
2
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.
Remote controller
inter-unit wiring
Remote controller
Remote controller wiring
A B
Indoor
Indoor side
side
1 2 3
Indoor/Outdoor connecting wires
Outdoor side 1 2 3
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
◆ 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 Indoor/Outdoor connecting wires and the remote controller wire to the terminal block of
the electrical control box.
3
A B
Tighten screws of the terminal block securely, and fix the wires with code clamp attached to the
electrical control box. (Do not apply tension to the connecting section of the terminal block.)
1 2 3
4
Mount the cover of the electrical control box so that it does not pinch the wires.
Indoor power
inter-unit wiring
A B
1 2 3
Electrical control
box cover
▼Connecting the Indoor/Outdoor connecting wires
<Single connection>
Terminal block of
power supply
1 2 3
Indoor/Outdoor connecting wires
– 16 –
Two screws
Remote controller
terminal block
Earth screw
A B
Clamp base
Cord clamp
P.C. board
Terminal block
Indoor/Outdoor
connecting wires
Run the Indoor/Outdoor
connecting wires here
through the clamp base
and fix it with a cord
clamp.