Daikin EWAA Series, Руководство по установке, Страница: 33 / 40

9 Commissioning
Installation manual
33
EWAA011~016DA + EWYA009~016DA
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P620240-1 – 2020.06
9 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.
NOTICE
The unit contains a manual air purge valve. Make sure it is
closed. Only open it when performing an air purge.
If the field piping contains any automatic air purge valves,
make sure they are open, also after commissioning.
INFORMATION
Protective functions – "Installer-on-site mode" . The
software is equipped with protective functions, such as
room antifrost. The unit automatically runs these functions
when necessary.
During installation or service this behaviour is undesired.
Therefore, the protective functions can be disabled:
▪ At first power-on: The protective functions are
disabled by default. After 12 h they will be automatically
enabled.
▪ Afterwards: An installer can manually disable the
protective functions by setting [9.G]:
Disable
protections = Yes . After his work is done, he can
enable the protective functions by setting [9.G]:
Disable protections = No .
9.1 Checklist before commissioning
After the installation of the unit, first check the items listed below.
Once all checks are fulfilled, the unit must be closed. Power-up the
unit after it is closed.
You read the complete installation instructions, as
described in the
installer reference guide .
The outdoor unit is properly mounted.
Field wiring
Be sure that the field wiring has been carried out
according to the instructions described in the chapter
"6 Electrical installation" [
4
13], according to the wiring
diagrams and according to the applicable legislation.
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 outdoor unit.
Only if the external backup heater kit is installed:
Backup heater circuit breaker F1B (factory-mounted in
the backup heater kit) is turned ON.
The correct pipe size is installed and the pipes are
properly insulated.
There are no water leaks inside the outdoor unit.
The shut-off valves are properly installed and fully open.
The manual air purge valve is closed.
The pressure relief valve purges water when opened.
Clean water must come out.
The minimum water volume is guaranteed in all
conditions. See "To check the water volume and flow rate"
in
"5.1 Preparing water piping" [
4
10].
9.2 Checklist during commissioning
The minimum flow rate is guaranteed in all conditions.
See "To check the water volume and flow rate" in
"5.1 Preparing water piping" [
4
10].
To perform an air purge .
To perform a test run .
To perform an actuator test run .
Underfloor screed dryout function
The underfloor screed dryout function is started (if
necessary).
9.2.1 To check the minimum flow rate
1 Check the hydraulic configuration to find out which
space heating loops can be closed by mechanical,
electronic, or other valves. —
2 Close all space heating loops that can be closed. —
3 Start the pump test run (see "9.2.4 To perform an
actuator test run" [
4
34]).
—
4 Read out the flow rate
(a)
and modify the bypass valve
setting to reach the minimum required flow rate + 2 l/
min.
—
(a)
During pump test run, the unit can operate below the minimum
required flow rate.
If operation is… Then the minimum required
flow rate is…
Cooling 20 l/min
Heating/defrost when outdoor
temperature is above –5°C
Heating/defrost when outdoor
temperature is below –5°C 22 l/min
9.2.2 To perform an air purge
Conditions: Make sure all operation is disabled. Go to [C]:
Operation
and turn off
Room
and
Space heating/cooling
operation.