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(a)
MCA=Minimum circuit ampacity. Stated values are maximum
values (see electrical data of indoor unit for exact values).
Wiring / circuit breaker (field supplied)
Power supply cable
MUST comply with national wiring
Wire size based on the current, but not
Transmission wiring
Only use harmonised wire providing
double insulation and suitable for
User interface cable
Only use harmonised wire providing
double insulation and suitable for
Recommended circuit
breaker
Residual current device
MUST comply with national wiring
14.2
To connect the electrical wiring to
the indoor unit
NOTICE
▪ Follow the wiring diagram (delivered with the unit,
located at the inside of the service cover).
▪ For instructions on how to connect the optional
equipment, see the installation manual delivered with
the optional equipment.
▪ Make sure the electrical wiring does NOT obstruct
proper reattachment of the service cover.
It is important to keep the power supply and the transmission wiring
separated from each other. In order to avoid any electrical
interference the distance between both wirings should ALWAYS be
at least 50 mm.
NOTICE
Be sure to keep the power line and transmission line apart
from each other. Transmission wiring and power supply
wiring may cross, but may NOT run parallel.
1 Remove the service cover. Remove the 2 screws. Hold the
service cover by the handle and slide it in the direction of the
arrow and then toward you.
c
2×
a
b
a
Service cover
b
Service cover handle
c
Sliding direction of service cover
2 User interface cable: Route the cable through the frame and
connect it to the terminal block (P1, P2).
FXKA-A
VRV system air conditioner
3P747532-2A – 2023.11
regulation.
3-core cable
2
less than 1.5 mm
applicable voltage
2-core cable
2
Minimum size 0.75 mm
applicable voltage
2-core cable
2
Minimum size 0.75 mm
Maximum length 500 m
6 A
regulation
14 Electrical installation
3 Transmission cable: Route the cable through the frame and
connect it to the terminal block (make sure the symbols F1 and
F2 match with the symbols on the outdoor unit).
4 Power supply cable: Route the cable through the frame and
connect it to the terminal block (L, N, earth).
a
Circuit breaker
b
Residual current device
5 Plastic clamp for tie wrap: Pass tie wraps through the plastic
clamps and fasten to fix the cables.
b
60~80
60~80
10~20
10~20
a
a
Connection of power supply cable
b
Tie wrap (accessory)
c
Connection of user interface cable and transmission
cable
d
Plastic clamp for tie wrap
6 Stick the sealing pads (accessory) to cover the cable bushing.
A
B
a b
c
A
Outside the unit
B
Inside the unit
a
Cable
b
Sealing pad (accessory)
c
Opening for cables
7 Reattach the service cover. Slide the service cover back and fix
with 2 screws.
Complete system example
1 user interface controls 1 indoor unit.
a
TO IN/D
TO OUT/D
N
L
N
L
N L
N L
P
P
F
F
T
T
P
P
F
F
1
2
1
2
1
2
1
2
1
b
P
P
P
P
1
2
1
2
c
a
Outdoor unit
b
Indoor unit
c
User interface
d
Most downstream indoor unit
NOTICE
For the use of group control and related limitations refer to
manual of outdoor unit.
a
b
b
10~40
7
30~35
c
d
d
b
a
N
L
N
L
N L
N L
T
T
P
P
F
F
T
T
P
P
F
F
2
1
2
1
2
1
2
1
2
1
2
1
2
P
P
P
P
1
2
1
2
Installation and operation manual
d
T
T
1
2
19
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