28-EN
27-EN
– 14 –
EN
7
Electrical connection
WARNING
•
Use the speci
fi
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 earthing 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.
•
Under no circumstances, the power supply wire or the indoor and outdoor connecting wire must not
be connected in the middle (Connection using a solderless terminal etc.)
Connection trouble in the places where the wire is connected in the middle may give rise to smoking and/or a
fi
re.
CAUTION
• For power supply speci
fi
cations, follow the Installation Manual of outdoor unit.
• Do not connect 220 – 240V power to the terminal blocks (
A
,
B
) for control wiring.
Otherwise, the system will fail.
• Do not damage or scratch the conductive core and inner insulator of power and system interconnection wires
during 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.
Wiring speci
fi
cations
Indoor / Outdoor connecting wires speci
fi
cations
Indoor unit power supplied from outdoor unit
• The outdoor unit power supply patterns vary on models.
Indoor unit power supply
1~50 Hz
1~60 Hz
220 - 240V
220V
Indoor / Outdoor connecting wires*
4 × 1.5 mm² or more (H07 RN-F or 60245 IEC 66)*
Up to 70 m
*Number of wire x wire size
*Including earth line
Remote controller wiring
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 500 m
2 remote controllers
Up to 300 m
In case of wireless type included
Up to 400 m
Total wire length of remote controller inter-unit wiring = L1 + L2 + … Ln
Up to 200 m
* The remote controller wiring length differs depending on the remote controller used. For details, refer to the
Installation Manual attached to the remote controller.
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.
Communication type
TU2C-Link can be used with these models.
If the indoor unit and the connected remote controller / remote sensor are all TU2C-Link models, TU2C-Link
communication will be performed automatically.
(If the TCC-Link model is included, TCC-Link communication will be performed.)
For details of communication type, refer to the following table.
Communication type and model names
Communication
type
TU2C-Link
TCC-Link
Indoor unit
RAV-HM
½½½
series model
Other than RAV-HM
½½½
series
Wired remote
controller
RBC-A
½½
U
½½½
This letter indicates U series model.
Other than U series
Wireless remote
controller kit &
receiver unit
RBC-AXU
½½½
This letter indicates U series model.
Other than U series
Remote sensor
TCB-TC
½½
U
½½½
This letter indicates U series model.
Other than U series
CAUTION
When connecting to the central control device dedicated to TCC-Link, it is necessary to change to TCC-Link
using a wired remote controller. Set according to the Communication type procedure of “8 Applicable controls”.
L1
L
L2
Ln
Remote
controller
wiring
Remote controller inter-unit wiring
For number of Max. connectable units,
refer to the following table.
Indoor unit
Remote
controller
Indoor unit
Indoor unit
Indoor unit
Max. number of connect-able indoor units, and communication type
Unit type
Indoor unit
RAV-HM
½½½
RAV-HM
½½½
½
½
Remote controller
Remote sensor
U series
½
U series
½
Communication type
TU2C-Link
TCC-Link
Max. number of connect-able
units
16
8
½
: Other than RAV-HM
½½½
and U series
