6 Commissioning
Installation manual
9
FDXM25~60F3V1B(9)
Split system air conditioners
4P472267-1B – 2018.07
4
Wrap the cables with the sealing material (accessory) to
prevent water from entering the unit. Seal all gaps to prevent
small animals from entering the system.
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
a
c
b
c
A
Indoor PCB (ASSY)
a
Power supply and earth wiring
b
Transmission and user interface wiring
c
Clamps
X
Not allowed
O
Allowed
5
Reattach the service cover.
1~ 50 Hz
220-240 V
b
a
e
c
d
a
Interconnection cable
b
Power supply cable
c
Earth leakage circuit breaker
d
Fuse
e
User interface
5.3.2
Specifications of standard wiring
components
Component
Specification
Interconnection cable
(indoor↔outdoor)
Minimum cable section of
2.5 mm² and applicable for
230 V
User interface cable
Vinyl cords with 0.75 to
1.25 mm² sheath or cables
(2‑core wires)
Maximum 500 m
6
Commissioning
NOTICE
NEVER operate the unit without thermistors and/or
pressure sensors/switches. Burning of the compressor
might result.
6.1
Checklist before commissioning
After the installation of the unit, first check the following items. Once
all below checks are fulfilled, the unit MUST be closed, ONLY then
can the unit be powered up.
You read the complete installation instructions, as
described in the
installer reference guide
.
The
indoor units
are properly mounted.
In case a wireless user interface is used: The
indoor unit
decoration panel
with infrared receiver is installed.
The
outdoor unit
is properly mounted.
There are NO
missing phases
or
reversed phases
.
The system is properly
earthed
and the earth terminals
are tightened.
The
fuses
or locally installed protection devices are
installed according to this document, and have NOT been
bypassed.
The
power supply voltage
matches the voltage on the
identification label of the unit.
There are NO
loose connections
or damaged electrical
components in the switch box.
The
insulation resistance
of the compressor is OK.
There are NO
damaged components
or
squeezed
pipes
on the inside of the indoor and outdoor units.
There are NO
refrigerant leaks
.
The correct pipe size is installed and the
pipes
are
properly insulated.
The
stop valves
(gas and liquid) on the outdoor unit are
fully open.
6.2
To perform a test run
This task is only applicable when using the BRC1E52 or BRC1E53
user interface. When using any other user interface, see the
installation manual or service manual of the user interface.
NOTICE
Do not interrupt the test run.
INFORMATION
Backlight.
To perform an ON/OFF action on the user
interface, the backlight does not need to be lit. For any
other action, it needs to be lit first. The backlight is lit for
±30 seconds when you press a button.
1
Perform introductory steps.
#
Action
1
Open the liquid stop valve (A) and gas stop valve (B)
by removing the stem cap and turning
counterclockwise with a hex wrench until it stops.
A
B
2
Close the service cover to prevent electric shocks.
3
Turn ON power for at least 6 hours before starting
operation to protect the compressor.
