Toshiba RAV-SM182CTP-UL Installation Manual page 16

 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
Indoor side
L1 L2 S
System interconnection
wires
Outdoor side L1 L2 S
Power supply
Simultaneous triple and double twin system
Remote controller
Remote controller
inter-unit wiring
Remote controller
wiring
Indoor side
Indoor side
L1 L2 S
System
interconnection wires
Indoor power
Outdoor side
L1 L2 S
inter-unit wiring
Power supply
* Use 2-core shield wire (MVVS AWG20 to AWG16 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.
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Simultaneous twin system
Remote controller
Remote controller
inter-unit wiring
Remote controller wiring
Indoor side
Indoor
side
L1 L2 S
System interconnection wires
Indoor power
L1 L2 S
Outdoor side
inter-unit wiring
Power supply
Remote controller Remote controller
inter-unit wiring
inter-unit wiring
Indoor side Indoor side
L1 L2 S L1 L2 S
Indoor power Indoor power
inter-unit wiring inter-unit wiring
Triple
Double twin
� 15 �
 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. 3.9"(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.
3
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.)
L1 L2 S
4
Mount the cover of the electrical control box so that it does not pinch the wires.
Electrical control
box cover
 Connecting the system interconnection wire
<Single connection>
Terminal block of
power supply
L1 L2 S
System interconnection wires
Two screws
Remote controller
terminal block
Earth
screw
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.
30-EN