5 Installation
Installation and operation manual
8
250AXVEB
Split system air conditioners
3P580564-1 – 2019.04
5.3.1
Specifications of standard wiring
components
Component
FDA200
FDA250
Power supply
cable
MCA
(a)
4 A
4.3 A
Voltage
220~240 V
Phase
1~
Frequency
50/60 Hz
Wire sizes
Must comply with applicable
legislation
Interconnection cable
(indoor↔outdoor)
4-core cable 1.5 mm
2
~2.5 mm
2
and applicable for 220~240 V
H07RN-F (60245 IEC 66)
User interface cable
Vinyl cord with 0.75 to 1.25 mm
2
sheath or cables (2 core wires)
Maximum 500 m
H03VV-F (60227 IEC 52)
Recommended circuit breaker
6 A
Earth leakage circuit breaker
Must comply with applicable
legislation
(a)
MCA=Minimum circuit ampacity. Stated values are
maximum values (see electrical data of combination with
indoor units for exact values).
Electrical equipment must comply with EN/IEC 61000-3-12, the
European/International Technical Standard setting the limits for
harmonic currents produced by equipment connected to public low-
voltage systems with input current >16 A and ≤75 A per phase.
5.3.2
To connect the electrical wiring on the
indoor unit
NOTICE
▪ Follow the wiring diagram (delivered with the unit,
located on the switch box cover).
▪ 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.
c
d
f
a
b
e
a
Interconnection cable
b
Power supply cable
c
Circuit breaker
d
Earth leakage circuit breaker
e
Power supply
f
Earth
2
User interface cable
: Route the cable through the frame,
connect the cable to the terminal block, and fix the cable with a
cable tie.
3
Interconnection cable
(indoor↔outdoor): Route the cable
through the frame, connect the cable to the terminal block
(make sure the numbers match with the numbers on the
outdoor unit, and connect the earth wire), and fix the cable with
a cable tie.
4
Power supply cable:
The unit MUST be connected to a
separate power supply in addition to the interconnection cable
to ensure correct function. When servicing the unit interrupt all
power supply.
When using 1 user interface
with 1 indoor unit.
When using 2 user interfaces
1 2 3
a
b
c
1 2 3
P
1
P
2
P
1
P
2
d
L N
b
c
e
L N
1 2 3
b
c
1 2 3
P
1
P
2
P
1
P
2
P
1
P
2
d
d
a
L N
b
c
e
L N
When using group control
b
c
P
1
P
2
d
P
1
P
2
P
1
P
2
P
1
P
2
a
1 2 3 L N
1 2 3
1 2 3 L N
1 2 3
1 2 3 L N
1 2 3
b
b
c
a
b
c
a
b
c
e
L N
b
c
e
L N
b
c
e
L N
a
Power supply
b
Main switch
c
Fuse
d
User interface
e
Separate power supply
5
Wrap the sealing (field supply) around the cables to prevent
water from entering the unit. Seal all gaps to prevent small
animals from entering the system.
