18
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Electrical installation
Installer and user reference guide
69
FXHA32~100AVEB
VRV system air conditioner
4P673749-1 – 2022.01
18.2 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
Open the knockout hole and install the resin bushing (accessory). Refer to:
53]. The location depends on the power supply
wiring route. For transmission and user interface cable, choosing the same
route as the refrigerant piping is recommended.
50 mm
b c
a
d
c
a
Power supply wiring
b
Resin bushing (accessory)
c
Sealing material for gaps around pipes and cables (accessory)
d
User interface cable and transmission cable
3
Install the 2 wiring fixtures with screws for wiring fixture (accessory).
4
User interface cable
: Route the cable through the large cut out hole and
connect it to the terminal block (symbols P1, P2).
5
Transmission cable
: Route the cable through the large cut out hole and
connect it 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.
6
Power supply cable
: Route the cable through the small cut out hole and
connect it to the terminal block (L, N, earth). Fix the cable with a tie wrap on
the wiring fixture.
a
b
a
Circuit breaker
b
Residual current device