15 Finishing the indoor unit installation
Installation and operation manual
20
FXHQ-A
VRV system air conditioner
3P668115-3E – 2022.11
15
Finishing the indoor unit
installation
NOTICE
Block any gaps around pipes and cables with sealing
material (accessory) to avoid dust from entering the indoor
unit.
15.1
To mount the suction grille and
decoration side panel
1
Install securely in the reverse order. Refer to
14].
2
When installing the suction grille, attach the strap of the suction
grille to the hook on the indoor unit.
INFORMATION
When closing the suction grille, make sure the straps of the
suction grille are not pinched anywhere.
a
c
d
e
c
b
a
b
b
f
a
Round hole
b
Hook
c
Strap
d
Indoor unit
e
Suction grille
f
Cross-shaped hole
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 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 have read the complete installation and operation
instructions described in the
installer and user reference
guide
.
The
indoor unit
is properly mounted.
The
outdoor unit
is properly mounted.
The
drain piping
is properly installed and 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 sensor in group control
▪ Thermostat differential changeover (if remote sensor is used)
▪ Automatic changeover differential
▪ Auto-restart after power failure
▪ T1/T2 input setting
