16 Commissioning
Installation and operation manual
23
FXUA50~100AVEB
VRV system air conditioner
3P668115-2C – 2022.01
a
Corner cover
b
Screw (accessory)
c
Press this part to make sure there is no gap
15.2
To close the suction grille
1
Hook the suction grille onto the indoor unit and attach all 4
straps.
45°
1
3
2
2
Close the suction grille by sliding the knobs away from the
middle of the unit.
a
a
a
Knobs
16
Commissioning
NOTICE
General
commissioning
checklist.
Next
to
the
commissioning instructions in this chapter, a general
commissioning checklist is also available on the Daikin
Business Portal (authentication required).
The general commissioning checklist is complementary to
the instructions in this chapter and can be used as a
guideline and reporting template during the commissioning
and hand-over to the user.
NOTICE
ALWAYS operate the unit with thermistors and/or pressure
sensors/switches. If NOT, burning of the compressor might
be the result.
16.1
Checklist before commissioning
1
After the installation of the unit, check the items listed below.
2
Close the unit.
3
Power up the unit.
You read the complete installation and operation
instructions, as described in the
installer and user
reference guide
.
The
indoor unit
is properly mounted.
The
outdoor unit
is properly mounted.
Make sure
drain piping
is properly installed, insulated
and drainage flows smoothly. Check for water leaks.
Possible consequence:
Condensate water might drip.
The
refrigerant pipes
(gas and liquid) are installed
correctly and thermally insulated.
There are NO
refrigerant leaks
.
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.
There are NO
damaged components
or
squeezed
pipes
on the inside of the indoor and outdoor units.
The
stop valves
(gas and liquid) on the outdoor unit are
fully open.
16.2
To perform a test run
INFORMATION
▪ Perform the test run according to the instructions in the
outdoor unit manual.
▪ The test run is only completed if there is no malfunction
code displayed on the user interface or the outdoor unit
7‑segment display.
▪ See the service manual for the complete list of error
codes and a detailed troubleshooting guideline for each
error.
NOTICE
Do NOT interrupt the test run.
17
Configuration
17.1
Field setting
Make the following field settings so that they correspond with the
actual installation setup and with the needs of the user:
▪ Ceiling height
▪ Air volume when thermostat control is OFF
▪ Time to clean air filter
▪ Thermostat sensor selection
▪ Thermostat differential changeover (if remote sensor is used)
▪ Automatic changeover differential
▪ Auto-restart after power failure
▪ Air discharge direction
▪ T1/T2 input setting
INFORMATION
▪ The connection of optional accessories to the indoor
unit might cause changes to some field settings. For
more information, see the installation manual of the
optional accessory.
▪ Following setting are only applicable when using the
BRC1H52* user interface. When using any other user
interface, see the installation manual or service manual
of the user interface.
Setting: Ceiling height
This setting must correspond with the actual distance to the floor and
the capacity class.
