Installation and operation manual
7
FXLQ20~63P7VEB
VRV System air conditioners
4PW53089-1B
Wiring installation
Remove the control box cover and connect the wiring.
If wiring from the piping side, wire as shown in the figure below.
W
IRING
EXAMPLES
Fit the power supply wiring of each unit with a switch and fuse as
shown in
figure 1
.
Complete system example (3 systems)
When using 1 remote controller for 1 indoor unit. (Normal operation)
(See figure 2)
For group control or use with 2 remote controllers
(See figure 4)
When including BS unit
(See figure 3)
PRECAUTIONS
■
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.
■
For a group control remote controller, choose the remote
controller that suits the indoor unit which has the most functions.
■
Do not ground the equipment on gas pipes, water pipes,
lightning rods or crossground with telephones. Improper
grounding could result in electric shock.
1
Control box
2
Power supply wiring (field supply)
3
Remote controller wiring (field supply)
4
Transmission wiring (field supply)
5
Clamp fastener
6
Clamp (accessory part)
7
Cut off excess after fastening
NOTE
For control box wiring, also refer to the "Electric Wiring
Diagram" label on the control box cover.
1
Pass through hole of opposite frame panel in same manner
2
Remote controller wiring
3
Transmission wiring
4
Power supply wiring and ground wiring
5
Control box
6
Fasten with clamp (accessory part)
Do not switch the remote controller wiring, transmission
wiring and power supply wiring when connecting the wires
to the terminal blocks.
1
4
3
2
7 6
5
3x
3x
3x
4
2
3
4
3
2
6
6
6
1
5
1
Power supply
6
BS unit (only for heat
recovery system)
2
Main switch
3
Outdoor unit
7
Power supply wiring
4
Indoor unit
8
Transmission wiring
5
Remote controller
9
Switch
10
Fuse
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
Summary of Contents for VRV
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