Air Purge Function On The Brine Circuit - Daikin EGSQH10S18AA9W Installer's Reference Manual

9 Commissioning
There are 2 modes to purge 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 space heating or domestic hot water heating mode.
The operation speed of the pump (slow or quick) can also be set.
▪ Automatic: the unit change automatically the pump speed and the
position of the 3-way valve between space heating or 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 that the leaving water temperature home page, room
temperature home page, and domestic hot water home page are
turned OFF.
The air purge function stops automatically after 30 minutes.
To perform a manual air purge
Prerequisite: Make sure that the leaving water temperature home
page, room temperature home page, and domestic hot water home
page 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
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
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 (space
heating/domestic hot water)(space heating/domestic hot water).
Use the and buttons to scroll to Circuit.
8 Use the and buttons to set the desired position of the 3-way
valve (space heating/domestic hot water).
Result: SHC
Result: Tank
Installer reference guide
56
"To set the user
page 34.
> Installer settings >
.
to start the air purge
01:18
To perform an automatic air purge
Prerequisite: Make sure that the leaving water temperature home
page, room temperature home page, and domestic hot water home
page 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
Stop Adjust Scroll
To interrupt air purge
1 Press and press to confirm the interruption of the air
purge function.
9.4.3

Air purge function on the brine circuit

When installing and commissioning the unit, it is very important to
remove all air from the brine circuit.
NOTICE
It is required that the brine circuit is filled BEFORE the
brine pump test run is activated.
There are 2 ways to perform an air purge:
▪ with a brine filling station (field supply),
▪ with a brine filling station (field supply) in combination with the
unit's own brine pump.
10‑day brine pump operation. If a brine buffer vessel is part of the
system, it may be required to let the brine pump run continuously for
10 days after the system is commissioned. If 10‑day brine pump
operation is:
▪ ON: The unit operates as normal, except that the brine pump
operates continuously for 10 days, independent of compressor
status.
▪ OFF: Brine pump operation is linked to compressor status.
To perform an air purge with a brine filling station
Follow the instructions included with the brine filling station (field
supply).
To perform an air purge with the brine pump and a
brine filling station
Prerequisite: Performing an air purge on the brine circuit was NOT
successful using a brine filling station only (see
purge with a brine filling station" on page
brine filling station and the unit's own brine pump simultaneously.
1 Fill the brine circuit.
2 Start the brine pump test run.
3 Start the brine filling station (MUST be started within a time
frame of 5~60 seconds after starting the brine pump test run).
"To set the user
page 34.
> Installer settings >
.
to start the air purge
01:18
"To perform an air
56). In this case, use a
EGSQH10S18AA9W
Daikin Altherma ground source heat pump
4P351748-1D – 2016.02