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W
IRING EXAMPLE AND HOW TO SET THE
REMOTE CONTROLLER
How to connect wiring
From the outside of the unit
Remove the switch box cover as shown in
connections.
From the inside of the unit
Remove the small bottom plate and the interchangeable plate (in
case of rear suction) or the air filter holding plate (in case of bottom
suction). Lower the switch box as shown in
through the wiring ports of the switch box cover before connecting
them.
1
Small bottom plate
2
Air filter holding plate
3
Switch box
4
Interchangeable plate
5
Square hole (covered by the switch box cover)
PRECAUTIONS
1
Observe the notes mentioned below when wiring to the power
supply terminal board.
-
Do not connect wires of different gauge to the same power
supply terminal. (Looseness in the connection may cause
overheating.)
-
When connecting wires of the same gauge, connect them
according to the figure.
2
Keep total current of crossover wiring between indoor units less
than 12 A. Branch the line outside the terminal board of the unit
in accordance with electrical equipment standards, when using
two power wiring of a gauge greater than 2 mm
The branch must be sheathed in order to provide an equal or
greater degree of insulation as power supply wiring itself.
3
Do not connect wires of different gauge to the same grounding
terminal. Looseness in the connection may deteriorate the
protection.
4
Remote controller cords and wires connecting the units should
be located at least 50 mm away from power supply wiring. Not
following this guideline may result in malfunction due to
electrical noise.
5
For the remote controller wiring, refer to the "Installation manual
of the remote controller" supplied with the remote controller.
6
Never connect the power supply wiring to the terminal board for
transmission wiring. This mistake could damage the entire
system.
7
Use only specified wires and tightly connect wires to the
terminals. Be careful that wires do not place external stress on
the terminals. Keep wiring in neat order so that they do not
obstruct other equipment such as popping open the switch box
cover. Make sure the cover closes tight. Incomplete connections
could result in overheating, and in the worse case, electric shock
or fire.
FXSQ20~125M8V3B
VRV System air conditioners
4PW25083-1C
figure
11b, and make the
figure
11c. Put the wires
2
(Ø1.6).
Setting of static pressure changeover connector
According to the systems static pressure requirement, reposition
the adaptors of the PC board inside the switch box as shown in
the figure.
FXSQ20~63
1
2
1
2
1
1
Black wire
2
Blue wire
NOTE
The unit is factory set for standard static pressure
(X4A) at the time of shipping.
W
IRING EXAMPLE
Fit the power supply wiring of each unit with a switch and fuse as
shown in
figure
19.
1
Power supply
2
Main switch
3
Power supply wiring
4
Transmission wiring
5
Switch
6
Fuse
7
BS unit REYQ only
8
Indoor unit
9
Remote controller
Complete system example (3 systems)
When using 1 remote controller for 1 indoor unit (Normal operation)
(See figure 12)
For group control or use with 2 remote controllers
When including BS unit
(See figure 16)
1
Outdoor unit
2
Indoor unit
3
Remote controller (optional accessories)
4
Most downstream indoor unit
5
For use with 2 remote controllers
6
BS unit
NOTE
It is not necessary to designate an indoor unit address
when
using
automatically set when the power is activated.
FXSQ80~125
Low
not available
Standard
1
2
High
2
1
(See figure 14)
group
control.
The
address
Installation and operation manual
2
is
6
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