Daikin FXHQ12MVJU, Installation Manual

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12
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.
Table 4
3. Do not connect wires of different gauge to the same ground
terminal. Looseness in the connection may deteriorate pro-
tection.
4. Outside of the unit, keep transmission wire at least 5 in.
away from power supply wire. The equipment may malfunc-
tion if subjected to electrical (external) noise.
5. For remote controller wire, refer to the “INSTALLATION
MANUAL OF REMOTE CONTROLLER” attached to the
remote controller.
9-2 WIRING EXAMPLE
• Fit the power supply wire 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
3. When including BS unit
NOTE
1. It is not necessary to designate indoor unit address when
using group control. The address is automatically set when
power is activated.
2. All transmission wires except for remote controller wire are
polarized and must match the terminal symbol.
3. A single switch can be used to supply power to units on the
same system. However, branch switches and branch circuit
breakers must be selected carefully.
4. Do not ground the equipment on gas pipes, water pipes or
lightning rods, or crossground with telephones. Improper
grounding could result in electric shock.
10. ATTACHING THE SUCTION GRILLE,
THE DECORATION PANELS AND THE
PROTECTION NET
Once wiring is complete, firmly attach the control box lid, the
suction grille, the decoration panels and the protection net in the
order opposite to detachment.
• Attaching the protection net
Attach the protection net from the way of the hook (i), fix 2
securing screws of the middle of the other side first (ii), then
fix the remaining securing screws (iii).
Terminal Size Tightening torque (ft.lbf)
Transmission terminal block (6P) M3.5 0.58 – 0.72
Power supply terminal block (2P) M4 0.87 – 1.06
Ground terminal M4 0.87 – 1.06
Power supply wire
Transmission wire
Switch
Fuse
Power supply
Main
switch
Remote controller
Indoor unit
BS unit
(Only for Heat
recovery
system)
Fig. 30
L
2
L
1
L
2
L
1
L
2
L
1
L
1
L
2
L
1
L
2
IN/D OUT/D
F1 F2 F1 F2
Control box
L
1
L
2
P
1
P
2
P
1
P
2
F
1
F
2
T
1
T
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
P
1
P
2
P
1
P
2
F
1
F
2
T
1
T
2
P
1
P
2
L
1
L
2
Outdoor unit
Indoor
unit A
Indoor
unit B
Indoor
unit C
Most
downstream
Indoor unit
Power supply
208-230V
60Hz
Power supply
208-230V
60Hz
Power supply
208-230V
60Hz
Power supply
208-230V
60Hz
Remote
controller
Fig. 31
L
2
L
1
L
1
L
2
L
1
L
2
L
1
L
2
IN/D OUT/D
F 1 F 2 F 1 F 2
Control box
P
1
P
2
P
1
P
2
F
1
F
2
T
1
T
2
P
1
P
2
F
1
F
2
T
1
T
2
P
1
P
2
F
1
F
2
T
1
T
2
P
1
P
2
F
1
F
2
T
1
T
2
P
1
P
2
P
1
P
2
L
1
L
2
Outdoor unit
Indoor
unit B
Most
downstream
indoor unit
For use with 2
remote controllers
Remote
controller
Power supply
208-230V
60Hz
Fig. 32
L
2
L
1
Indoor
unit A
Indoor
unit C
L
2
L
1
L
2
L
1
L
2
L
1
Power supply
208-230V
60Hz
Power supply
208-230V
60Hz
Power supply
208-230V
60Hz
IN/D OUT/D
F
1
F
2
F
1
F
2
IN/D OUT/D
F 1 F 2 F 1 F 2
L
1
L
2
P
1
P
2
P
1
P
2
F
1
F
2
T
1
T
2
BS unit
Outdoor unit
Power
supply
208-230V
60Hz
Indoor unit A
Most
downstream
indoor unit
Power
supply
208-230V
60Hz
Control box
Control box
IN/D OUT/D
F 1 F 2 F 1 F 2
BS unit
Control box
L
1
L
2
P
1
P
2
P
1
P
2
F
1
F
2
T
1
T
2
Remote
controller
L
2
L
1
Fig. 33
L
2
L
1