Daikin FXDQ20NVE Installation Manual page 12

[ WIRING EXAMPLE ]
No. 1 system When using 1 remote controller for
1 indoor unit
Power supply Power supply
single phase single phase
50Hz 220-240V 50Hz 220-240V
or
single phase single phase
Outdoor unit
60Hz 220V 60Hz 220V
L N
IN/D OUT/D
F F F F
1 2 1 2
L N P P F F T T
1 2 1 2 1 2
Indoor unit A Indoor unit B
P P
1 2
Remote controller
(option)
No. 2 system For group control or use with 2 remote
controllers
Power supply
single phase
50Hz 220-240V
or
single phase
60Hz 220V Outdoor unit Note) There is not need to set the indoor unit
L N
IN/D OUT/D
F F F F
1 2 1 2
L N P P F F T T
L N
1 2 1 2 1 2
Indoor
unit A
P P
1 2
Case of group control
Remote controller
(option)
10
Power supply
single phase
50Hz 220-240V
or or
single phase
60Hz 220V
L N L N
L N P P F F T T L N
P P F F
1 2 1 2 1 2 1 2 1 2
Most
downstream
Indoor unit
P P P
1 2 1
Remote controller Remote controller
(option) (option)
Fig. 16
address when using group control.
(It is automatically set when the power
is turned on.)
Most down-
P P F F T T P P F F T T
L N stream
1 2 1 2 1 2 1 2 1 2 1 2
indoor unit
Indoor unit B
P P P P
1 2 1 2
Remote control l e r Remote control l e r
(option)
For use with 2
remote controllers
Fig. 17
No. 3 system When including BS unit
Power supply
single phase
50Hz 220-240V
or
single phase
60Hz 220V
L N
T T
1 2
P
2
〈 〈 〈 〈 Precautions when laying power supply wiring 〉 〉 〉 〉
• Wiring of different thicknesses cannot be connected to the
power supply wiring terminal block. (Slack in the power sup-
ply wiring may cause abnormal heat.)
• Use sleeve-insulated round crimp-style terminals for connec-
tions to the power supply wiring terminal block. When none
are available, connect wires of the same diameter to both
sides, as shown in the figure.
Insulation sleeve
Round crimp-style terminal
Connect wires of
the same gauge to
both sides.
Follow the instructions are below if the wiring may get very
hot due to slack in the power supply wiring.
• For wiring, use the designated power supply wiring and con-
nect firmly, then secure to prevent outside pressure being
exerted on the terminal board.
• 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 prop-
erly tightened.
• If the terminal screws are tightened too hard, screws might
be damaged.
• Refer to the table below for the tightening torque of the termi-
nal screws.
Terminal block
Remote controller / transmission wiring
terminal block (6P)
Power supply wiring terminal block (3P)
Outdoor unit
BS unit
IN/D OUT/D OUT/D
F F F F
F F
1 2 1 2 1
L N P P F F T T
1 2 1 2 1 2
Indoor unit A
P P
1 2
Remote controller
(option)
Fig. 18
Electric wire
Do not connect
wires of the same
gauge to one side.
Tightening torque (N·m)
0.79 – 0.97
1.18 – 1.44
IN/D
F F
2 1 2
Do not connect
wires of different
gauges.
English