14 Electrical installation
Installation and operation manual
17
FAA71+100BUV1B
Split system air conditioner
3P654518-1A – 2021.03
13.2
Connecting the refrigerant piping
DANGER: RISK OF BURNING/SCALDING
13.2.1
To connect the refrigerant piping to the
indoor unit
CAUTION
Install the refrigerant piping or components in a position
where they are unlikely to be exposed to any substance
which may corrode components containing refrigerant,
unless the components are constructed of materials that
are inherently resistant to corrosion or are suitably
protected against corrosion.
WARNING: MILDLY FLAMMABLE MATERIAL
The R32 refrigerant (if applicable) in this unit is mildly
flammable. Refer to the outdoor unit specifications for the
type of refrigerant to be used.
▪
Pipe length
. Keep refrigerant piping as short as possible.
1
Flare connections
. Connect refrigerant piping to the unit using
flare connections.
2
Insulation
. Insulate the refrigerant piping, the insulating tape
should be wrapped from the L-shaped bend all the way to the
end inside the unit as follows:
d
f
b
e
g
a
c
h
d
b
i
a
Field piping
b
Indoor unit piping insulation tubing
c
Indoor unit piping
d
Insulating tubing tape
e
Insulating tape (accessory)
f
Large tie wrap (accessory)
g
Beginning of wrapping
h
L-shaped bend
i
Insulation tubing seam (make sure there are no gaps in
the insulation tubing seam)
NOTICE
Make sure to insulate all refrigerant piping. Any exposed
piping might cause condensation.
14
Electrical installation
DANGER: RISK OF ELECTROCUTION
WARNING
▪ All wiring MUST be performed by an authorised
electrician and MUST comply with the applicable
legislation.
▪ Make electrical connections to the fixed wiring.
▪ All components procured on-site and all electrical
construction MUST comply with the applicable
legislation.
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
Specification
Interconnection cable
(indoor↔outdoor)
4-core cable
1.5 mm
2
~2.5 mm
2
and
applicable for 220~240 V
H05RN-F (60245 IEC 57)
(a)
User interface cable
Vinyl cords with 0.75 to
1.25 mm² sheath or cables
(2‑core wires)
H03VV-F (60227 IEC 52)
Maximum 500 m
(a)
In case the conduit pipes are not used, use H07RN-F (60245 IEC
66).
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 and shield plate.
2
User interface cable
: Connect the cable to the terminal block
(symbols P1, P2).
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
Seal all gaps with a sealing material (field supply) to prevent
small animals from entering the system.
5
Reattach the shield plate and the service cover.
