Daikin FDA125A5VEB, Installation And Operation Manual

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14 Electrical installation
Installation and operation manual
17
FDA125A5VEB
Split system air conditioners
4P494410-1D – 2022.10
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.
▪ Flare connections . Connect refrigerant piping to the unit using
flare connections.
▪ Insulation . Insulate the refrigerant piping on the indoor unit as
follows:
B A
a d c e f b b
a d c e f b b
2
4
3
g
1
2 3
4
g
1
A B
A Liquid piping
B Gas piping
a Insulation material (field supply)
b Tie wrap (field supply)
c Insulation pieces: Large (gas pipe), small (liquid pipe)
(accessories)
d Flare nut (attached to the unit)
e Refrigerant pipe connection (attached to the unit)
f Unit
g Sealing pads: Medium 1 (gas pipe), medium 2 (liquid
pipe) (accessories)
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 provides 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.
14.1 Specifications of standard wiring
components
NOTICE
We recommend using solid (single-core) wires. If stranded
wires are used, slightly twist the strands to consolidate the
end of the conductor for either direct use in the terminal
clamp or insertion in a round crimp-style terminal. Details
are described in "Guidelines when connecting the electrical
wiring" in the installer reference guide.
Component FDA125A
Power supply
cable MCA
(a)
2.1 A
Voltage 220~240 V
Current 2.1 A
Phase 1~
Frequency 50/60 Hz
Wire sizes MUST comply with national wiring
regulation.
3-core cable
Wire size based on the current,
but not less than 2.5 mm
2
Interconnection
cable
(indoor↔outdoor) Voltage 220~240 V
Wire size Only use harmonised wire
providing double insulation and
suitable for applicable voltage.
4-core cable
Minimum 1.5 mm
2
User interface
cable Wire size Only use harmonised wire
providing double insulation and
suitable for applicable voltage
2-core wire
Wire length Maximum 500 m
Recommended field fuse 16 A
Earth leakage circuit breaker /
residual current device MUST comply with national wiring
regulation
(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 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.
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.