7 Electrical installation
Installation manual
8
CTXA-C(W)(B)(S) + FTXA-C(W)(B)(S)
Daikin room air conditioner
3P697375-6B – 2023.05
WARNING
▪ Do NOT use locally purchased electrical parts inside
the product.
▪ Do NOT branch the power supply for the drain pump,
etc. from the terminal block. This could result in
electrical shock or fire.
WARNING
Keep the interconnection wiring away from copper pipes
without thermal insulation as such pipes will be very hot.
7.1
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
Interconnection
cable
(indoor↔outdoor)
Voltage
220~240 V
Wire size
Only use harmonized wire
providing double insulation
and suitable for applicable
voltage
4-core cable
Minimum 1.5 mm²
Earth leakage
circuit breaker /
residual current
circuit breaker
MUST comply with national wiring regulation
7.2
To connect the electrical wiring to
the indoor unit
WARNING
Provide adequate measures to prevent that the unit can be
used as a shelter by small animals. Small animals that
make contact with electrical parts can cause malfunctions,
smoke or fire.
NOTICE
▪ Keep the power line and transmission line apart from
each other. Transmission wiring and power supply
wiring may cross, but may NOT run parallel.
▪ In order to avoid any electrical interference, the
distance between both wirings should ALWAYS be at
least 50 mm.
Electrical work should be carried out in accordance with the
installation manual and the national electrical wiring rules or code of
practice.
1
Set the indoor unit on the mounting plate hooks. Use the " "
marks as a guide.
c
a
b
d
a
Mounting plate (accessory)
b
Piece of packing material
c
Interconnection cable
d
Wire guide
INFORMATION
Support the unit using a piece of packing material.
Example:
2
Open the front panel, and then the service cover. Refer to the
Installer reference guide for opening procedure. For location of
the installer reference guide refer to
3
Pass the interconnection cable from the outdoor unit through
the feed-through wall hole, through the back of the indoor unit
and through the front side.
Note:
In case the interconnection cable was stripped in advance,
cover the ends with insulating tape.
4
Bend the end of the cable up.
a
b
c
a
Terminal block
b
Electrical component block
c
Cable clamp
5
Strip the wire ends approximately 15 mm.
6
Match wire colours with terminal numbers on the indoor unit
terminal blocks and firmly screw the wires to the corresponding
terminals.
7
Connect the earth wire to the corresponding terminal.
8
Firmly fix the wires with the terminal screws.
9
Pull the wires to make sure that they are securely attached,
then retain the wires with the wire retainer.
10
Shape the wires so that the service cover fits securely, then
close the service cover.
7.3
To connect optional accessories
(wired user interface, central user
interface, etc.)
1
Remove the electrical wiring box cover (if needed, refer to the
Installer reference guide to opening procedure)
2
Attach the connection cable to the S21 connector and pull the
wire harness as shown in the following figure.
