Daikin Altherma EHFH-D3V - Commissioning; Checklist before Commissioning; Checklist During Commissioning; To Check the Minimum Flow Rate

8 Commissioning
Installation manual
25
EHFH03S18D
Daikin Altherma 3 R F
4P596803-1D – 2022.08
8 Commissioning
INFORMATION
This unit is a heating only model. Therefore, all references
to cooling in this document are NOT applicable.
NOTICE
ALWAYS operate the unit with thermistors and/or pressure
sensors/switches. If NOT, burning of the compressor might
be the result.
NOTICE
Make sure both air purge valves (one on the magnetic filter
and one on the backup heater) are open.
All automatic air purge valves MUST remain open 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. (If the user interface home pages are off,
the unit will not operate automatically.)
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 by setting [A.6.D]: Disable
protections=On. After his work is done, he can
enable the protective functions by setting [A.6.D]:
Disable protections=OFF.
8.1 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 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.
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 following field piping on the cold water inlet of the
DHW tank has been carried out according to this
document and the applicable legislation:
▪ Non-return valve
▪ Pressure reducing valve
▪ Pressure relief valve (and it purges clean water when
opened)
▪ Tundish
▪ Expansion vessel
The pressure relief valve (space heating circuit) 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 "5.2Preparing water piping"[47].
The domestic hot water tank is filled completely.
8.2 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 "5.2 Preparing water
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).
8.2.1 To check the minimum flow rate
1 Confirm according to the hydraulic configuration which space
heating loops can be closed due to mechanical, electronic, or
other valves.
2 Close all space heating loops that can be closed (see previous
step).