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Digital Inverter
Installation Manual
10
7
ELECTRICAL WORK
WARNING
1.
Using the specified wires, ensure that the wires
are connected, and fix wires securely so that
the external tension to the wires does not affect
the connecting part of the terminals.
Incomplete connection or fixation may cause a fire,
etc.
2.
Be sure to connect the earth wire (grounding
work). Incomplete grounding may lead to
electric shock.
Do not connect ground wires to gas pipes, water
pipes, lightning rods or ground wires for telephone
wires.
3.
The appliance shall be installed in accordance
with national wiring regulations.
Capacity shortages of the power circuit or an
incomplete installation may cause an electric shock
or fire.
CAUTION
• Wrong wiring may cause a burn-out of some electrical
parts.
• Be sure to use the cord clamps attached to the
product.
• Do not damage or scratch the conductive core or inner
insulator of the power and connecting wires when
peeling them.
• Use the power and connecting wires with specified
thicknesses, specified types and protective devices
required.
• Remove the panel, and you can see electric parts on
the front side.
• A metal pipe can be installed through the hole for
wiring. If the hole size does not fit the wiring pipe to be
used, drill the hole again to an appropriate size.
Furthermore, be sure to secure these wires with the pipe
valve fixing plate and cord clamps stored in the electric
parts box.
• When the outdoor air temperature drops, power is
supplied to the compressor with the purpose of
preheating the compressor in order to protect it.
Therefore, leave the main power switch at the “on”
setting during the periods when the air conditioner is
being used.
Wiring between Indoor Unit and
Outdoor Unit
1.
Figure below shows the wiring connections between
the standard 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 installation place.
2.
Refer to the wiring diagrams of the models
concerned for the internal wiring connections of the
outdoor unit and indoor units.
3.
There is no need to perform the P.C. board settings
for the indoor units.
Electric parts box
Cord clamp
Pipe hole
Pipe valve fixing plate
• Secure the indoor/outdoor connecting
wires at side C.
Side D (Space: 8.5 mm)
Side C (Space: 4 mm)
Panel
Power and Wiring Specifications
* Number of wire
u
wire size
How to wire
1.
Connect the connecting wire to the terminal as
identified with their respective numbers on the
terminal block of the indoor and outdoor units.
H07 RN-F or 60245 IEC 66 (1.5 mm
2
or more)
2.
When connecting the connecting wire to the outdoor
unit terminal, prevent water from coming into the
outdoor unit.
3.
Secure the power supply wire and indoor/outdoor
connecting wires using the cord clamp of the
outdoor unit.
4.
For interconnecting wires, do not use a wire joined
to another on the way.
Use wires long enough to cover the entire length.
CAUTION
• An installation fuse must be used for the power supply
line of this air conditioner.
• Incorrect/incomplete wiring may lead to an electrical
fire or smoke.
• Prepare an exclusive power supply for the air
conditioner.
• This product can be connected to the mains power.
Fixed wire connections:
A switch that disconnects all poles and has a contact
separation of at least 3 mm must be incorporated in
the fixed wiring.
Wiring diagram
* For details on the remote controller wiring/installation,
refer to the Installation Manual enclosed with the
remote controller.
Single system
Model
(RAV-SM
Type)
224AT8
280AT8
Power supply
380-415 V 3N~
50 Hz
Maximum
running
current
18.0 A
22.0 A
Installation
fuse rating
25 A
25 A
Power wire*
5
u
2.5 mm
2
or more
(H07 RN-F or 60245 IEC 66)
Indoor/
outdoor
connecting
wires*
4
u
1.5 mm
2
or more
(H07 RN-F or 60245 IEC 66)
1 2
A B
3
1 2 3
L1
L2
L3
Ν
Outdoor unit
Remote
controller
Indoor unit
Circuit
breaker
Input power
380-415 V 3N~, 50Hz
A B
1
1
L1 L2
N
L3
2
2
3
3
Remote controller
Remote controller
wiring
Indoor side
Indoor/Outdoor
connecting wires
Outdoor side
Power supply
EN-19
EN-20
