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Wiring
WARNING
• Do not use tapped wires, stranded wires (CAUTION 1), extension cords, or starburst connections, as they may cause over-
heating, electrical shock, or fire.
• Do not use locally purchased electrical parts inside the product. (Do not branch the power for the drain pump, etc., from the ter-
minal block.) Doing so may cause electric shock or fire.
• Be sure to install an earth leakage breaker. (One that can handle higher harmonics.)
(This unit uses an inverter, which means that an earth leakage breaker capable of handling harmonics must be used, in order
to prevent malfunctioning of the earth leakage breaker itself.)
• Use an all-pole disconnection type breaker with at least 3mm between the contact point gaps.
• Do not connect the power wire to the indoor unit. Doing so may cause electric shock or fire.
• Do not turn on the safety breaker until all work is completed.
1) Strip the insulation from the wire (20mm).
2) Connect the inter-unit wires between the indoor and out-
door units so that the terminal numbers match.
Tighten the terminal screws securely. We recommend a
flathead screwdriver be used to tighten the screws. The
screws are packed with the terminal block.
CAUTION
•When connecting the inter-unit wire to the ter-
minal block using a single core wire, be sure to
perform curling.
1-3
Problems with the work may cause heat and
B
fires.
A
•Make sure that the earth wire between the pull
relief and terminal is longer than the other wires.
A<B
•If the stranded wires must
be used, make sure to use the round crimp-
style terminal for connection to the power
supply terminal block. Place the round
crimp-style terminals on the wires up to the
covered part and secure in place.
3) Pull the wire and make sure that it does not disconnect. Then fix the wire in place with a wire retainer.
Wire retainer
Use the
specified wire
type and
connect it
securely.
Make sure the electrical
wiring does not come into
contact with the gas piping.
Refer to the figure.
Make sure the connecting
piping and wiring fit
into
.
(Incorrect handling will
make it hard to attach the
stop valve cover, causing
deformation.)
12
Good
4
4
P
Be sure to clamp the wire for
power source on this location.
ROOM-A
Liquid piping
Gas piping
ROOM-B
Liquid piping
Gas piping
Room A
1
2
Indoor unit
Room A
Round crimp-style
terminal
Wrong
1
2
3
ROOM-A
Firmly secure wire retainer
so wire terminations will not
receive external stress.
Shape wires so that the stop
Also use the two screws
valve cover fits securely.
located at the bottom of
the packing case to tighten
the four locations.
Make absolutely sure all wiring is correct.
Make sure the wiring and piping from the indoor unit to the outdoor unit match.
Good
Piping
ROOM-A
A
Wiring
Outdoor
unit
Wiring
B
ROOM-B
Piping
Outdoor unit
Room B
Power supply wire
3
1
2
3
H05RN
L
N
Be sure to use the dedicated circuits.
Safety breaker
Earth leakage
circuit breaker
16 A
Inter-unit wire
H05RN
To room B
Good
1
2
3
ROOM-B
Power supply
L
N
Wrong
Piping
ROOM-A
Wiring
Wiring
ROOM-B
Piping
50Hz
220-240V
Stranded wire
Wrong
A
Outdoor
unit
B
English
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