Daikin FXDQ-M Engineering Data page 29

Installation
• Remote controller and transmission wiring
Pull the wires into the unit through the wiring through hole
and connect to the terminal block (6P).
Be sure to put PVC or vinyl-clad wire into the control box.
WIRING EXAMPLES
No. 1 system When using 1 remote controller for
1 indoor unit
Power supply Power supply
single phase single phase
Outdoor unit
60Hz 208-230V 60Hz 208-230V
L1 L2
IN/D OUT/D
F F F F
1 2 1 2
L1 L2 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
Outdoor unit Note) There is not need to set the indoor unit
60Hz 208-230V
L1 L2
IN/D OUT/D
F F F F
1 2 1 2
L1 L2 P P F F T T L1 L2
1 2 1 2 1 2
Indoor
unit A
P P
1 2
Remote controller
(option)
28
Power supply
single phase
60Hz 208-230V
L1 L2 L1 L2
L1 L2 P P F F T T L1 L2 P P F F T
1 2 1 2 1 2 1 2 1 2 1
Most
downstream
Indoor unit
P P P P
1 2 1 2
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 L1 L2 P P F F T T stream
1 2 1 2 1 2 1 2 1 2 1 2
indoor unit
Indoor unit B
P P P
1 2 1
Case of group control
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
60Hz 208-230V
T
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
supply wiring may cause abnormal heat.)
• Use sleeve-insulated round crimp-style terminals for con-
nections to the power supply wiring terminal block. When
none are available, connect wires of the same diameter to
both sides, as shown in the following figure.
Round crimp-style terminal
Connect wires of
the same gauge to
both sides.
P
2
Follow the instructions below if the wiring gets very hot
due to slack in the power supply wiring.
• For wiring, use the designated power supply wiring and
connect 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 properly tight-
ened.
• If the terminal screws are tightened too hard, screws might
be damaged.
• Refer to the following below for the tightening torque of the
terminal screws.
Outdoor unit
L1 L2
IN/D
OUT/D
F F F
F
1 2 1 2
P P F F T T
L1 L2
1 2 1 2 1 2
Indoor unit A
P P
1 2
Remote controller
(option)
Fig. 18
Insulation sleeve
Do not connect
wires of the same
gauge to one side.
EDUS39-600-F2_a
BS unit
OUT/D IN/D
F F F
F
1 2 1 2
Electric wire
Do not connect
wires of different
gauges.
FXDQ-M