10
English
CAUTION
• Be sure to attach the sealing material or putty (field supplied)
to hole of wiring to prevent the infiltration of water as well as
any insects and other small creatures from outside. Other-
wise a short-circuit may occur inside the electric parts box.
• When clamping the wires, be sure no pressure is applied to
the wire connections by using the included clamping material
to make appropriate clamps. Also, when wiring, make sure
the lid on the electric parts box fits snugly by arranging the
wires neatly and attaching the electric parts box lid firmly.
When attaching the electric parts box lid, make sure no wires
get caught in the edges. Pass wiring through the wiring
through holes to prevent damage to them.
• Make sure the remote controller wiring, the wiring between
the units, and other electrical wiring do not pass through the
same locations outside of the unit, separating them by at
least 50mm, otherwise electrical noise (external static) could
cause mistaken operation or breakage.
[ PRECAUTIONS ]
1.
Use round crimp-style terminals for connecting wires to the
power supply terminal block.
If unavailable, observe the following points when wiring.
• Do not connect wires of different gauge to the same
power supply terminal.
(Looseness in the connection may cause overheating.)
• Use the specified electric wire. Connect the wire securely
to the terminal. Lock the wire down without applying
excessive force to the terminal. (Tightening torque:
131N·cm ±10 %)
2. Tightening torque for the terminal screws.
• Use the correct screwdriver for tightening the terminal
screws. If the blade of screwdriver is too small, the head
of the screw might be damaged, and the screw will not be
properly tightened.
• If the terminal screws are tightened too hard, screws
might be damaged.
• Refer to the table below for the tightening torque of the
terminal screws.
3. Do not connect wires of different gauge to the same ground-
ing terminal. Looseness in the connection may deteriorate
protection.
4. Outside of the unit, keep transmission wiring at least 50 mm
away from power supply wiring. The equipment may mal-
function if subjected to electrical (external) noise.
5. For remote controller wiring, refer to the “INSTALLATION
MANUAL OF REMOTE CONTROLLER” attached to the
remote controller.
6.
Never connect power supply wiring to the terminal
block for remote controller wiring. A mistake of the sort
could damage the entire system.
7. Use only specified wire and tightly connect wires to termi-
nals. Be careful wires do not place external stress on termi-
nals. Keep wiring in neat order and so as not to obstruct
other equipment such as popping open the electric parts
box lid. Make sure the lid closes tight. Incomplete connec-
tions could result in overheating, and in worse case, electric
shock or fire.
9-2
WIRING EXAMPLE
• Fit the power supply wiring of each unit with a switch and
fuse as shown in the drawing.
COMPLETE SYSTEM EXAMPLE (3 systems)
1.
When using 1 remote controller for 1 indoor unit. (Nor-
mal operation)
2.
For group control or use with 2 remote controllers
Terminal
Size
Tightening torque
Terminal block for remote controller (6P)
M3.5
0.79 – 0.97N·m
Power supply terminal block (2P)
M4
1.18 – 1.44N·m
Ground terminal
M4
1.44 – 1.94N·m
Electric wire
Round crimp-style terminal
Attach insulation sleeve
Power supply wiring
Transmission wiring
Switch
Fuse
Power supply
Main
switch
Remote controller
Indoor unit
BS unit
(Only for Heat
recovery
system)
L N
L N
IN/D OUT/D
F1 F2 F1 F2
Control box
L N
LN
P
1
P
2
P
1
P
2
F
1
F
2
T
1
T
2
P
1
P
2
P
1
P
2
F
1
F
2
T
1
T
2
LN
P
1
P
2
P
1
P
2
F
1
F
2
T
1
T
2
LN
LN
P
1
P
2
P
1
P
2
F
1
F
2
T
1
T
2
L N
Outdoor unit
No. 1
System
Indoor
unit A
Indoor
unit B
Indoor
unit C
Most
downstream
Indoor unit
Power supply
220-240V
50Hz
or
220V
60Hz
Power supply
220-240V
50Hz
or
220V
60Hz
Power supply
220-240V
50Hz
or
220V
60Hz
Power supply
220-240V
50Hz
or
220V
60Hz
IN/D OUT/D
F
1
F
2
F
1
F
2
Control box
LN
P
1
P
2
P
1
P
2
F
1
F
2
T
1
T
2
LN
P
1
P
2
F
1
F
2
T
1
T
2
LN P
1
P
2
F
1
F
2
T
1
T
2
LN P
1
P
2
F
1
F
2
T
1
T
2
P
1
P
2
P
1
P
2
L N
Outdoor unit
No. 2
System
Indoor unit A
Indoor unit B
Indoor unit C
Most
downstream
indoor unit
For use with 2
remote controllers
Power supply
220-240V
50Hz
or
220V
60Hz
Fig. 28
01_EN_3P172532-7.fm Page 10 Thursday, December 15, 2005 2:45 PM
