Commissioning; Checklist Before Commissioning; Checklist During Commissioning; To Check The Minimum Flow Rate - Daikin EHVZ08S18DA6V7 Installation Manual

6 Commissioning

6 Commissioning
NOTICE
ALWAYS operate the unit with thermistors and/or pressure
sensors/switches. If NOT, burning of the compressor might
be the result.
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 36 h they will be automatically
enabled.
▪ Afterwards: An installer can manually disable the
protective functions
protections=Yes. After his work is done, he can
enable the protective functions by setting [9.G]:
Disable protections=No.
6.1

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 indoor unit is properly mounted.
The outdoor unit is properly mounted.
The following field wiring has been carried out according
to this document and the applicable legislation:
▪ Between the local supply panel and the outdoor unit
▪ Between indoor unit and outdoor unit
▪ Between the local supply panel and the indoor unit
▪ Between the indoor unit and the valves (if applicable)
▪ Between the indoor unit and the room thermostat (if
applicable)
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.
Backup heater circuit breaker F1B (field supply) is
turned ON.
There are NO refrigerant leaks.
The refrigerant pipes (gas and liquid) are thermally
insulated.
The correct pipe size is installed and the pipes are
properly insulated.
There is NO water leak inside the indoor unit.
Installation manual
24
by setting [9.G]: Disable
The shut-off valves are properly installed and fully open.
The stop valves (gas and liquid) on the outdoor unit are
fully open.
The air purge valve is open (at least 2 turns).
The pressure relief valve purges water when opened.
Clean water must come out.
The domestic hot water tank is filled completely.
6.2

Checklist during commissioning

The minimum flow rate during backup heater/defrost
operation is guaranteed in all conditions. See "To check
the water volume and flow rate" in
piping" [ 4 7].
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).
6.2.1

To check the minimum flow rate

Mandatory procedure for the additional zone
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
run" [ 4 25]).
actuator test
(a)
4 Read out the flow rate 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.
Recommended procedure for the main zone
INFORMATION
The pump of the additional zone ensures that the minimum
flow rate for correct operation of the unit is guaranteed.
1 Check with the hydraulic configuration which space
heating loops can be closed by mechanical,
electronic, or other valves.
2 Close all space heating loops that can be closed
(see previous step).
3 Create a thermo request on the main zone only.
4 Wait 1 minute until the unit is stabilized.
5 If the additional pump is still assisting (the green
LED on the right hand sided pump is ON) increase
the flow until the additional pump is not assisting
anymore (LED is OFF).
6 Go to [8.4.A]: Information > Sensors > Flow
rate.
7 Read out the flow rate and modify the bypass valve
setting to reach the minimum required flow rate + 2 l/
min.
"3.2 Preparing water
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"6.2.4 To perform an —
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EHVZ04+08S18+23DA6V+9W7
Daikin Altherma 3 R F
4P618950-1 – 2020.03