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14 Electrical installation
NOTICE
▪ Join the attached piping (accessory) and the field
refrigerant piping (field supply) by brazing before fixing
the attached piping to the unit.
▪ Do NOT braze the refrigerant piping directly to the
indoor unit.
CAUTION
Do NOT reuse sealing (on the attached piping). Always
use new sealing to prevent refrigerant gas leaks.
3 Insulate the refrigerant piping on the indoor unit as follows:
A
a
b a
A
B
A
Liquid piping
B
Gas piping
a
Insulation material (field supply)
b
Cable tie (field supply)
c
Attached piping (accessory)
d
Hexagon head bolt and spring washer (accessory)
e
Refrigerant pipe connection (attached to the unit)
f
Unit
NOTICE
Make sure to insulate all refrigerant piping. Any exposed
piping might cause condensation.
14
Electrical installation
DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
WARNING
Use an all-pole disconnection type breaker with at least
3 mm between the contact point gaps that provide full
disconnection under overvoltage category III.
WARNING
If the supply cord is damaged, it MUST be replaced by the
manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
WARNING
Prevent hazards due to inadvertent resetting of the thermal
cut-out: power to this appliance MUST NOT be supplied
through an external switching device, such as a timer, or
connected to a circuit that is regularly turned ON and OFF
by the utility.
Installation and operation manual
18
B
a
b
e f
a
b
a
c
a
d
e
f
14.1
Specifications of standard wiring
components
Component
(a)
Power
MCA
supply cable
Voltage
Phase
Frequency
Wire sizes
Transmission wiring
For specification refer to the installation
User interface cable
Recommended field fuse
Residual current device
Must comply with applicable legislation
(a)
MCA=Minimum circuit ampacity. Stated values are maximum
values (see electrical data of indoor unit for exact values).
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.
2 User interface cable: Route the cable through the opening for
cable, connect the cable to the terminal block (symbols P1, P2).
3 Transmission cable: Route the cable through the opening for
cable, connect the cable to the terminal block (make sure the
symbols F1, F2 match with the symbols on the outdoor unit).
Bundle the transmission cable with the user interface cable and
fix them with a tie wrap on the wiring fixture.
4 Power supply cable: Route the cable through the frame and
connect the cable to the terminal block (L, N, earth). Fix the
cable with a tie wrap on the wiring fixture.
a
Circuit breaker
b
Residual current device
Class
200
250
4.3 A
5.2 A
220~240 V/220 V
1~
50/60 Hz
2
1.5 mm
(3‑core wire)
H07RN-F (60245 IEC 66)
manual of the outdoor unit
2
0.75 to 1.25 mm
(2‑core wire)
H05RN-F (60245 IEC 57)
Length ≤500 m
6 A
a
b
FXMA-A
VRV system air conditioner
3P688304-1 – 2022.03
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