14 Electrical installation
Installation and operation manual
21
FXHA32~100AVEB
VRV system air conditioner
3P668115-1C – 2022.01
a
c
b
a
Screw
b
Reinforcing plate
c
Decoration side panel
▪
Pipe length
. Keep refrigerant piping as short as possible.
▪
Flare connections
. Connect refrigerant piping to the unit using
flare connections.
▪
Insulation
. Insulate the refrigerant piping on the indoor unit as
follows:
A
B
a
d
c
e f
b
b
a
d
c
e f
b
b
2
4
3
g
1
2
3
1
B
A
A
Gas piping
B
Liquid piping
a
Insulation material (field supply)
b
Tie wrap (accessory)
c
Insulation pieces: Large (gas pipe), small (liquid pipe)
(accessory)
d
Flare nut (attached to the unit)
e
Refrigerant pipe connection (attached to the unit)
f
Unit
g
Small sealing pad (accessory)
1
Turn up the seams of the insulation pieces.
2
Attach to the base of the unit.
3
Tighten the tie wrap on the insulation pieces.
4
Wrap the sealing pad from the base of the unit to the top
of the flare nut.
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.
14.1
Specifications of standard wiring
components
Component
Class
32
50
63
100
Power
supply cable
MCA
(a)
0.5 A
0.6 A
0.7 A
1.3 A
Voltage
220~240 V/220 V
Phase
1~
Frequency
50/60 Hz
Wire sizes
1.5 mm
2
(3‑core wire)
H07RN-F (60245 IEC 66)
Transmission wiring
For specifications, refer to the installation
manual of the outdoor unit
User interface cable
0.75 to 1.25 mm
2
(2‑core wire)
H05RN-F (60245 IEC 57)
Length ≤500 m
Recommended circuit
breaker
6 A
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
Open the knockout hole and install the resin bushing
(accessory). Refer to:
17]. 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)
