Air Purge Function - Daikin ERGA04DAV3A Installer's Reference Manual

9 Commissioning
5 Select the flow rate information. During test run
operation, the unit can operate below the minimum
required flow rate.
6 Modify the bypass valve setting to reach the
minimum required flow rate + 2 l/min.
Minimum required flow rate during defrost/backup heater
operation
12 l/min
9.4.2

Air purge function

When commissioning and installing the unit, it is very important to
remove all air in the water circuit. Open the air purge valves and
perform an air purge. When the air purge function is running, the
pump operates without actual operation of the unit and the removal
of air in the water circuit will start.
NOTICE
Before starting the air purge, open the safety valve and
check if the circuit is sufficiently filled with water. Only if
water escapes the valve after opening it, you can start the
air purge procedure.
There are 2 modes for purging air:
▪ Manual: the unit operates with a fixed pump speed and in a fixed
or custom position of the 3-way valve. The custom position of the
3-way valve is a more than helpful feature to remove all air from
the water circuit in the space heating or the domestic hot water
heating mode. Air purge must be performed for both the space
heating and the domestic hot water circuit. The operation speed of
the pump (slow or quick) can also be set.
▪ Automatic: the unit automatically changes the pump speed and
switches the position of the 3-way valve between the space
heating and the domestic hot water heating mode.
Typical workflow
Purging the air from the system should consist of:
1 Performing a manual air purge
2 Performing an automatic air purge
INFORMATION
Start by performing a manual air purge. When almost all
the air is removed, perform an automatic air purge. If
necessary, repeat performing the automatic air purge until
you are sure that all air is removed from the system.
During air purge function, pump speed limitation [9‑0D] is
NOT applicable.
The air purge function automatically stops after 30 minutes.
To perform a manual air purge
Conditions: Make sure all operation is disabled. Go to the
Operation menu and turn off Room, Space heating/cooling and Tank
operation.
1 Set the user permission level to Installer. See
change the user permission level" on
2 Go to [A.3]: Commissioning > Air purge.
3 In the menu, set Type = Manual.
4 Select Start air purge.
5 Select OK to confirm.
Result: The air purge starts. It will stop automatically
when air purge cycle is finished.
Installer reference guide
78
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Final English - Tanslations in progress
6 During manual operation, you can change the
desired pump speed. The position of the 3-way valve
must be changed between space heating and
domestic hot water. To change the settings during
the air purge, open the menu and go to Settings.
▪ Scroll to Circuit and set it to Space/Tank.
▪ Scroll to Pump speed and set it to Low/High.
7 To stop the air purge manually:
1 Go to Stop air purge.
2 Select OK to confirm.
To perform an automatic air purge
Conditions: Make sure all operation is disabled. Go to the
Operation menu and turn off Room, Space heating/cooling and Tank
operation.
1 Set the user permission level to Installer. See
change the user permission level" on
2 Go to [A.3]: Commissioning > Air purge.
3 In the menu, set Type = Automatic.
4 Select Start air purge.
5 Select OK to confirm.
Result: The air purge starts. It stops automatically
when done.
6 To stop the air purge manually:
1 Go to Stop air purge.
2 Select OK to confirm.
9.4.3 To perform an operation test run
Conditions: Make sure all operation is disabled. Go to the
Operation menu and turn off Room, Space heating/cooling and Tank
operation.
1 Set the user permission level to Installer. See
change the user permission level" on
2 Go to [A.1]: Commissioning > Operation test run.
3 Select a test from the list. Example: Heating.
4 Select OK to confirm.
Result: The test run starts. It stops automatically
when done (±30 min).
To stop the test run manually:
1 Go to Stop test run.
2 Select OK to confirm.
If the installation of the unit has been done correctly, the unit will
start up during test operation in the selected operation mode. During
test mode, the correct operation of the unit can be checked by
monitoring its leaving water temperature (heating/cooling mode) and
tank temperature (domestic hot water mode).
To monitor the temperature:
1 Go to Sensors.
2 Select the temperature information.
9.4.4 To perform an actuator test run
Conditions: Make sure all operation is disabled. Go to the
Operation menu and turn off Room, Space heating/cooling and Tank
operation.
ERGA04~08DAV3(A) + EHVH/X04+08S18+23DA
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Daikin Altherma – Low temperature split
4P495248-1 – 2017.12