– 10 –
Concealed Duct Type
Installation Manual
EN
Concealed Duct Type
Installation Manual
7
Electrical Connection
WARNING
•
Use the specified wires for wiring connect the terminals. Securely fix them to prevent external forces applied
to the terminals from affecting the terminals.
Incomplete connection or fixation may cause a fire 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 fire.
CAUTION
• For power supply specifications, follow the Installation Manual of outdoor unit.
• Do not connect 220 – 240 V power to the terminal blocks (
,
) for control wiring.
Otherwise, the system will fail.
• Do not damage or scratch the conductive core and inner insulator of power and inter-connecting wires when 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.
Indoor/Outdoor connecting wires Specifications
*Number of wire x wire size
Remote controller wiring
CAUTION
The remote controller wire and Indoor/Outdoor connecting 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/Outdoor
connecting
wires*
4 x 1.5mm
2
or more
(H07 RN-F or 60245 IEC 66)
Up to
70m
Remote controller wiring, remote controller inter-unit
wiring
Wire size: 2 × 0.5 to 2.0 mm
2
Total wire length of remote controller wiring and remote
controller inter-unit wiring = L + L1 + L2 + … Ln
In case of wired type only
Up to 500m
In case of wireless type
included
Up to 400m
Total wire length of remote controller inter-unit wiring = L1 + L2 + … Ln
Up to 200m
A
B
L1
L
L2
Ln
Indoor unit
Remote controller inter-unit wiring
Indoor unit
Indoor unit
Indoor unit
Remote
controller
(Max. 8 units)
Remote
controller
wiring
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
* Use 2-core shield wire (MVVS 0.5 to 2.0 mm
2
or more) for the remote controller wiring in the simultaneous twin,
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.
Single system
Simultaneous twin system
Simultaneous triple and double twin system
A B
1
1
2
2
3
3
Outdoor side
Power supply
Remote controller
Remote controller wiring
Indoor side
Indoor/Outdoor
connecting wires
A B
1
2
3
A B
1
1
2
2
3
3
Power supply
Remote controller
inter-unit wiring
Indoor
side
Indoor power
inter-unit wiring
Outdoor side
Remote controller
Remote controller wiring
Indoor side
Indoor/Outdoor connecting
wires
A B
1
2
3
A B
1
2
3
A B
1
2
3
A B
1
2
3
1
2
3
Power supply
Remote controller
inter-unit wiring
Indoor side
Indoor power
inter-unit wiring
Remote controller
inter-unit wiring
Indoor side
Remote controller
inter-unit wiring
Indoor side
Triple
Double twin
Indoor power
inter-unit wiring
Indoor power
inter-unit wiring
Outdoor side
Remote controller
Remote controller
wiring
Indoor side
Indoor/Outdoor
connecting wires
19-EN
20-EN
+00EH99878599_01EN.book Page 10 Saturday, April 2, 2011 4:13 PM
