6 Installation
Installer reference guide
17
FTXA25~50(A)(B)2V1B(W)(S)(T)(B)
Daikin room air conditioner
4P518023-3F – 2019.10
6.5.4
Specifications of standard wiring
components
Component
Interconnection cable
(indoor↔outdoor)
4-core cable
1.5 mm²~2.5 mm²
and applicable for
220~240 V
H05RN-F (60245 IEC 57)
6.5.5
To connect the electrical wiring on the
indoor unit
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.
2
Open the front panel, and then the service cover. Refer to
10].
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.
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.
▪ In order to avoid any electrical interference the distance
between both wirings should ALWAYS be at least
50 mm.
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.
a
b
c
a
Terminal block
b
Electrical component block
c
Wire retainer
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.
6.5.6
To connect optional accessories (wired
user interface, central user interface, etc.)
1
Remove the electrical wiring box cover (refer to
remove the electrical wiring box cover"
2
Attach the connection cable to the S21 connector and pull the
wire harness as shown in the following figure.
a
a
S21 connector
3
Put the electrical wiring box cover back and pull the wire
harness around it as shown in the figure above.
6.6
Finishing the indoor unit
installation
6.6.1
To insulate the drain piping, refrigerant
piping and interconnection cable
1
After the drain piping, refrigerant piping and the electrical wiring
are finished. Wrap refrigerant pipes, interconnection cable and
drain hose together using insulation tape. Overlap at least half
the width of the tape with each turn.
d
e
c
b
f
a
2×
a
Drain hose
b
Interconnection cable
c
Mounting plate (accessory)
d
Refrigerant pipes
e
Indoor unit fixing screw M4×12L (accessory)
f
Bottom frame
