Air Purge Function; To Perform A Test Run - Daikin Altherma ERLQ011-014-016CA Installer's Reference Manual

4 Go to [6.1.8]: > Information > Sensor information > Flow rate
to check the flow rate. During pump test run operation, the unit
can operate below this minimum required flow rate that is
needed during defrost/backup heater operation.
Bypass valve foreseen?
Yes
Modify the bypass valve setting
to reach the minimum required
flow rate + 2 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. 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:
▪ Manually: the unit will operate 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 helpful feature to remove all air from the
water circuit in the space heating or the domestic hot water
heating mode. The operation speed of the pump (slow or quick)
can also be set.
▪ Automatic: the unit automatically changes the pump speed and
the position of the 3-way valve between the space heating or 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.
Make sure the user interface shows the home screens and that the
space heating and domestic hot water demands are turned off.
The air purge function automatically stops after 30 minutes.
To perform a manual air purge
Prerequisite: Make sure the user interface shows the home screens
and that the space heating and domestic hot water demands are
turned off.
1 Set the user permission level to Installer. See
permission level to Installer" on
2 Set the air purge mode: go to [A.7.3.1]
Commissioning > Air purge > Type.
3 Select Manual and press
ERHQ+ERLQ011~016 + EHBH/X11+16CB
Daikin Altherma – Low temperature split
4P384974-1 – 2015.01
No
In case the actual flow rate is
below the minimum flow rate
(required during defrost/backup
heater operation), modifications
at hydraulic configuration are
required. Increase the space
heating loops that can NOT be
closed or install a pressure
controlled bypass valve.
"To set the user
page 48.
> Installer settings >
.
4 Go to [A.7.3.4] > Installer settings > Commissioning > Air
purge > Start air purge and press
function.
Result: The manual air purge starts and the following screen
appears.
Tue
Air purge
Flow rate 0.5 l/min
Speed
Low
Circuit SHC
Bypass Yes
Stop Adjust Scroll
5 Use the and buttons to scroll to Speed.
6 Use the and buttons to set the desired pump speed.
Result: Low
Result: High
7 If applicable, set the desired position of the 3-way valve. Use
the and buttons to scroll to Circuit.
8 Use the and buttons to set the desired position of the 3-way
valve.
Result: SHC
Result: Tank
To perform an automatic air purge
Prerequisite: Make sure the user interface shows the home screens
and that the space heating and domestic hot water demands are
turned off.
1 Set the user permission level to Installer. See
permission level to Installer" on
2 Set the air purge mode: go to [A.7.3.1]
Commissioning > Air purge > Type.
3 Select Automatic and press
4 Go to [A.7.3.4] > Installer settings > Commissioning > Air
purge > Start air purge and press
function.
Result: Air purging will start and the following screen will be
shown.
Tue
Air purge
Flow rate 0.5 l/min
Speed Low
Circuit SHC
Bypass Yes
Stop Adjust Scroll
To interrupt air purge
1 Press and press to confirm the interruption of the air
purge function.
9.4.3

To perform a test run

Prerequisite: Make sure the user interface shows the home screens
and that the space heating and domestic hot water demands are
turned off.
1 Set the user permission level to Installer. See
permission level to Installer" on
2 Go to [A.7.1]: > Installer settings > Commissioning > Test
run.
3 Select a test and press . Example: Heating.
4 Select OK and press .
Result: The test run starts. It stops automatically when done
(±30 min). To stop it manually, press
9 Commissioning
to start the air purge
01:18
"To set the user
page 48.
> Installer settings >
.
to start the air purge
01:18
"To set the user
page 48.
, select OK and press .
Installer reference guide
75