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EDUS39-600-F7_a
Make sure the remote controller wiring, the wiring between the
units, and other electric wiring do not pass through the same
locations outside of the unit, separating them by at least 5", to
prevent the possibility of electric noise (external static) caus-
ing faulty 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 gauges 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: 0.97ft.lbf ±10 %)
Attach insulation sleeve
Round crimp-style terminal
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, they might
be damaged.
• Refer to the table below for the tightening torque of the
terminal screws.
Terminal
Terminal block for remote controller (6P)
Power supply terminal block (2P)
Ground terminal
3. Do not connect wires of different gauge to the same
grounding terminal. Looseness in the connection may
deteriorate protection.
4. Outside of the unit, keep transmission wiring at least 5"
away from power supply wiring. The equipment may mal-
function if subjected to electric (external) noise.
5. For remote controller wiring, refer to the INSTALLATION
MANUAL OF REMOTE CONTROLLER.
FXLQ-M / FXNQ-M
Electric wire
Tightening torque
Size
(ft-lbf)
M3.5
0.58 – 0.72
M4
0.87 – 1.06
M4
1.06 – 1.43
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)
Power supply
Main
switch
BS unit
(Only for
Heat
recovery
system)
Indoor unit
Remote controller
1. When using 1 remote controller for 1 indoor unit.
(Normal operation)
Power supply
Power supply
208-230V
208-230V
Outdoor unit
60Hz
60Hz
Control box
IN/D OUT/D
F
F
F
F
1
2
1
2
L
L
L
L
1
2
1
2
No. 1
System
L
L
P
P
F
F
T
T
L
L
1
2
1
2
1
2
1
2
1
2
Indoor
Indoor
unit B
unit A
P
P
1
2
2. For group control or use with 2 remote controllers
Note: It is not necessary to designate
Power supply
208-230V
Outdoor unit
Control box
60Hz
IN/D OUT/D
L
L
F
1
F
2
F
1
F
2
1
2
No. 2
System
Indoor unit B
Indoor unit A
L
L
P
P
F
F
T
T
L
L
1
2
1
2
1
2
1
2
1
2
P
P
1
2
Installation
Power supply wiring
Transmission wiring
Switch
Fuse
Power supply
Power supply
208-230V
208-230V
60Hz
60Hz
L
L
L
L
1
2
1
2
P
P
F
F
T
T
L
L
P
P
F
F
T
T
L
L
P
P
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
Indoor
unit C
P
P
P
P
1
2
1
2
Most
downstream
indoor unit
indoor unit address when using
group control.
The address is automatically
set when power is activated.
Most
downstream
Indoor unit C
indoor unit
P
P
F
F
T
T
L
L
P
P
F
F
T
T
L
L
P
P
F
F
T
T
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
P
P
1
2
For use with 2
remote controllers
Fig. 2
F
F
T
T
2
1
2
1
2
P
P
1
2
P
P
1
2
24
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