Daikin FXTQ12PAVJU, Installation Manual

9 

English

NOTES 

If the wiring is in a place where people it can be easily 

1. 

touched by people, install a ground-fault circuit interrupter 
to prevent electric shock.
When using a ground-fault circuit interrupter, make sure to 

2. 

select one useful also to protection against overcurrent and 
short-circuit.
When using a ground-fault circuit interrupter only for 
grounding device, make sure to use a wiring interrupter 
together.

The length of the transmission wiring and remote controller 

• 

wiring are as follows.

Length of the transmission wiring and remote controller wiring

Outdoor unit – Indoor unit

Max. 3280 ft.

(Total wiring length: 6560 ft.)

Indoor unit –  Remote controller

Max. 1640 ft.

ELECTRICAL CHARACTERISTICS

8-3 

Units

Power supply

Fan motor

Model

Hz

Volts

Voltage 

range

MCA

MOP

HP

FLA

12 type

60

208/

230

Min. 187
Max. 229/
Min. 207
Max. 253

1.1

15

1/2

0.9

18 type

1.9

1.5

24 type

1.6

3/4

1.3

30 type

2.4

1.9

36 type

3.3

2.6

42 type

4.0

3.2

48 type

6.0

4.8

54 type

8.0

6.4

MCA: Minimum Circuit Amps (A)  
MOP: Max Overcurrent Protective Device (A)
HP:   Fan motor output (HP) 

FLA:  Full Load Amps (A)

WIRING EXAMPLE

9. 

HOW TO  CONNECT WIRINGS

9-1 

〈

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 fi gure.

Electric wire

Round crimp-style terminal

Insulation sleeve

Connect wires of 
the same gauge to 
both sides.

Do not connect 
wires of the same 
gauge to one side.

Do not connect 
wires of different 
gauges. 

If the wiring gets too hot due to loose power-supply wir-
ing, use the following precautions:

For wiring, use the designated power supply wiring and 

• 

connect fi rmly, 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 tightened.
If the terminal screws are tightened too hard, screws might 

• 

be damaged.
Refer Table 2 for the tightening torque of the terminal screws.

• 

Table 2

Terminal block

Tightening torque (ft · lbf)

Remote controller / transmission 

wiring terminal block (6P) (10P)

0.58 – 0.72

Power supply wiring terminal 

block (3P)

0.87 – 1.06

Remove the front panel (upper).

(1) 

Top panel

Electric 
components 
box cover

Low-voltage 
hole

High-voltage 
hole

Remove the electric component box cover.

(2) 

Terminal block (6P)

Terminal block (3P)

Pass the power supply wiring and the ground wire 

(3) 

through the top panel’s high-voltage hole (requires 
use of conduit) and pass the remote controller wiring 
and transmission wiring through the top panel’s 
low-voltage hole.

Pass the included insulation tube through the hole in the 

• 

panel before connecting the electric wires and the 
ground wire to the terminal block (3P) shown in Fig. 9.
Pass the included insulation tube through the hole in the 

• 

panel before connecting the remote controller wiring 
and transmission wires to the terminal block (6P) shown