Daikin Altherma 3 GEO Series - To Start or Stop 10-Day Brine Pump Operation

11 | Commissioning
Installer reference guide
208
EGSAH/X06+10UDA9W
Daikin Altherma 3 GEO
4P598592-1A – 2019.12
1 Press the back button.
Result: A graph is displayed, highlighting the current step of the
screed dryout schedule, the total remaining time, and the
current desired leaving water temperature.
2 Press the left dial to open the menu structure and to:
1 View the status of sensors and actuators. —
2 Adjust the current program —
To stop an underfloor heating (UFH) screed dryout
U3-error
When the program is stopped by an error or an operation switch off, the U3 error
will be displayed on the user interface. To resolve the error codes, see
"14.4Solving problems based on error codes"[4222].
In case of a power failure, the U3 error is not generated. When power is restored,
the unit automatically restarts the latest step and continues the program.
Stop UFH screed dryout
To manually stop underfloor heating screed dryout:
1 Go to [A.4.3]: Commissioning > UFH screed dryout —
2 Select Stop UFH screed dryout.
3 Select OK to confirm.
Result: The underfloor heating screed dryout is stopped.
Read out UFH screed dryout status
When the program is stopped due to an error, an operation switch-off, or a power
failure, you can read out the underfloor heating screed dryout status:
1 Go to [A.4.3]: Commissioning > UFH screed dryout >
Status
2 You can read out the value here: Stopped at + the step
where the underfloor screed dryout was stopped.
—
3 Modify and restart the execution of the program
(a)
. —
(a)
If the UFH screed dryout program was stopped due to a power failure and the
power resumes, the program will automatically restart the last implemented step.
11.4.6 To start or stop 10-day brine pump operation
If a brine buffer vessel is part of the brine circuit, or in case a horizontal brine loop
is used, 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.
Conditions: All other commissioning tasks have been completed before starting
the 10 day brine pump operation. After you have done this, 10 day
brine pump operation can be activated in the commissioning menu.