7 Electrical installation
Installation manual
12
FTXF20~42E5V1B
Daikin room air conditioner
3P650253-7H – 2022.10
3
Discharge all nitrogen gas.
6.3.2
To perform vacuum drying
1
Vacuum the system until the pressure on the manifold indicates
−0.1 MPa (−1 bar).
2
Leave as is for 4-5 minutes and check the pressure:
If the pressure…
Then…
Does not change
There is no moisture in the
system. This procedure is
finished.
Increases
There is moisture in the
system. Go to the next step.
3
Vacuum the system for at least 2 hours to a manifold pressure
of −0.1 MPa (−1 bar).
4
After turning the pump OFF, check the pressure for at least
1 hour.
5
If you do NOT reach the target vacuum or CANNOT maintain
the vacuum for 1 hour, do the following:
▪ Check for leaks again.
▪ Perform vacuum drying again.
7
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
Do NOT connect the power supply to the indoor unit. This
could result in electrical shock or fire.
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, twist the conductor to consolidate the end
or twist the conductor to consolidate the end in
combination with the usage of a round crimp-style terminal
on the end of the conductor. Details are described in
"Guidelines when connecting the electrical wiring" in the
installer reference guide.
Component
Power supply cable Voltage
220~240 V
Phase
1~
Frequency
50 Hz
Wire sizes
Must comply with
applicable legislation
Interconnection cable
Minimum cable section of
2.5 mm² and applicable
for 220~240 V
Recommended field fuse
20 A
Earth leakage circuit breaker
Must comply with
applicable legislation
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.
b
a
c
a
Mounting plate (accessory)
b
Interconnection cable
c
Wire guide
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
