Electrical Connection - Toshiba RAV-SM307KRTP-E Installation Manual

10

Electrical connection

WARNING
•
Use the specifi ed wires for wiring connect the terminals. Securely fi x them to prevent external forces
applied to the terminals from affecting the terminals.
Incomplete connection or fi xation may cause a fi re or other trouble.
•
Connect earth wire. (grounding work)
Incomplete grounding cause an electric shock.
Do not connect earth wires to gas pipes, water pipes, lightning conductor or telephone earth wires.
• Appliance shall be installed in accordance with national wiring regulations.
Capacity shortage of power circuit or incomplete installation may cause an electric shock or a fi re.
CAUTION
•
For power supply specifi cations, follow the Installation Manual of outdoor unit.
•
Do not connect 220 – 240 V power to the terminal blocks (
Otherwise, the system will fail.
• Do not damage or scratch the conductive core and inner insulator of power and system interconnection wires
while peeling them.
• Perform the electric wiring so that it does not come to contact with the high-temperature part of the pipe.
The coating may melt resulting in an accident.
•
Do not turn on the power of the indoor unit until vacuuming of the refrigerant pipes completes.
■ System interconnection wires specifications
System interconnection wires*
(H07 RN-F or 60245 IEC 66)
*Number of wire x wire size
Remote controller wiring
Remote controller wiring, remote
Wire size: 2 × 0.5 to 2.0 mm
controller inter-unit wiring
In case of wired type only
Total wire length of remote controller
2 remote controllers
wiring and remote controller inter-unit
2 remote controllers including a
wiring = L + L1 + L2 + ... Ln
wireless remote controller
Total wire length of remote controller inter-unit wiring = L1 + L2 + ... Ln
CAUTION
The remote controller wire and system interconnection wires cannot be parallel to contact each other
and cannot be stored in the same conduits. If doing so, a trouble may be caused on the control system
due to noise or other factor.
Indoor unit
Remote
L
controller
L1
wiring
Remote
Remote controller inter-unit wiring
controller
19-EN
, , , ) for control wiring.
3 4
4 x 1.5 mm 2 or more
Up to 70 m
2
Up to 500 m
Up to 300 m
Up to 400 m
Up to 200 m
Indoor unit Indoor unit Indoor unit
L 2 L n
(max. 8 units)
■ 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
Indoor side
System interconnection
wires
Outdoor side
Power supply
▼ Simultaneous twin system
Remote controller
Remote controller wiring
Indoor side
System interconnection
wires
Outdoor side
Power supply
▼ Simultaneous triple and double twin system
Remote
controller
Remote controller
inter-unit
Remote
wiring
controller wiring
Indoor
Indoor side
side
System inter-
connection wires
Indoor power
inter-unit
Outdoor side
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. Be sure to 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.
– 10 –
Remote controller
inter-unit wiring
Indoor
side
Indoor power
inter-unit wiring
Remote Remote
controller
controller
inter-unit inter-unit
wiring wiring
Indoor Indoor
side side
Indoor power
inter-unit wiring
Triple
Double twin
or more) for the remote controller wiring in the simultaneous twin,
2
20-EN