Toshiba RAV-SM454MUT-E Installation Manual page 13

Compact 4-way Cassette Type
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
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
Indoor / Outdoor
connecting 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.
23-EN
Installation Manual
Simultaneous twin system
Remote controller
Remote controller inter-unit wiring
Remote controller wiring
A B
Indoor side
Indoor
side
1 2 3
Indoor / Outdoor connecting
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,
Compact 4-way Cassette Type
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 or other purpose.
• The low-voltage circuit is provided for the remote controller. (Do not connect the high-voltage circuit)
• Remove the cover of the electrical control box by taking off the mounting screws (3 positions) and pushing the
hooking section. (The cover of the electrical control box remains hanged to the hinge.)
• Connect the indoor / outdoor connecting wires and remote controller wire to the terminal block of the electrical
control box. (Do not apply tension to the connecting section of the terminal block.)
• 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.)
A B
• Using the attached heat insulator material, seal the pipe connecting port. Otherwise, dewing may be caused.
1 2 3
• Mount the cover of the electrical control box without pinching wires. (Mount the cover after wiring on the ceiling
panel.)
Screws
A B
1 2 3
A B
Cord clamp
– 12 –
P.C. board
Screw
Hooking section
Remote controller
terminal block
Heat insulation to wiring connecting port
A B
1 2 3
Indoor / Outdoor
connecting terminal
block
1 2 3
Heat insulator B
Installation Manual
Electrical control
box
Cover of electrical control box
Adhered surface
Heat
insulator A
Notched section
EN
24-EN