INSTALLATION
Commissioning
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Setting Brine pump run-on time
ALM 0 1 minute
ALM 30 30 minutes
ALM 60 60 minutes
ALM 120 120 minutes
ALM 180 180 minutes
If the brine inlet temperature rises, the resulting run-on time of the
source pump reduces accordingly. If the brine inlet temperature
drops, the run-on time increases. From a brine inlet temperature
of 10 °C, the run-on time will always be at least one minute.
Brine pump run-on time with extractor module
0
50
100
150
200
250
300
350
400
-6 -5 -4 -3 -2 -1 0123 4567 8 9 10
84�03�01�0016
1
4
3
2
Y Brine pump run-on time [minutes]
X Brine inlet temperature [°C]
1 ALM 30
2 ALM 60
3 ALM 120
4 ALM 180
13 MIN SRCE TEMP
Setting range -10 °C to +10 °C and setting OFF.
!
Appliance and system damage
Never operate the appliance with source temperatures
below – 9 °C.
In the OFF position there is no scanning via the source sensor
temperature.
The compressor shuts down and the idle time is set, when the ac-
tual temperature drops below the minimum source temperature.
The compressor is enabled again after the idle time has expired
and the fixed hysteresis of 2 K has been exceeded.
This fault, i.e. MIN SRCE TEMP, will be indicated in the display by
a flashing warning triangle, and will be entered into the fault list.
The source pump will always be started 30 seconds earlier than
the compressor, which starts when there is a heat demand coming
from the central heating or DHW side.
Note
The source pump runs on for 60 minutes after the heat
pump has been switched OFF.
14 RETURN MAX
Maximum return temperature
Setting range 20 °C to 55 °C
If the temperature at the return sensor reaches this value during
heating operation, the heat pump is switched OFF immediately.
This safety function prevents the high pressure limiter responding.
No fault message is triggered when this value is reached.
The return temperature is not scanned during DHW operation.
15 MAX HTG FLOW T
Maximum heat pump flow temperature for central heating
Setting range 20 °C to 65 °C
This setting limits the flow temperature of the heat pump and the
electric booster heater during the heating operation.
16 HP SENSOR
Maximum high pressure
Setting range 38 bar to 40 bar.
This setting limits the high pressure during DHW or central heat-
ing. The system implements a controlled shutdown when the
maximum high pressure is reached.
See also DHW ECO.
17 MIXER MAX
Maximum mixer flow temperature
Setting range 20 °C to 90 °C
This setting limits the mixer circuit’s flow temperature. For exam-
ple, if a higher set flow temperature is calculated from the mixer
circuit data, the max. set mixer flow temperature will be used to
control and regulate to this value.
18 MIXER DYNAMIC
Mixer runtime
Setting range 60 to 240
This setting can be used to adapt the mixer characteristics. The
setting 60 to 240 means 6 K to 24 K control deviation.
The system scans every 10 s, and the minimum ON time for the
mixer is 0.5 s. The mixer does not respond inside the dead zone
of ±1 K from the set value.
Example for the setting 100 = 10 K
The control deviation (set mixer temperature – actual mixer tem-
perature) is 5 K. The mixer opens for 5 s, then pauses for 5 s and
starts again from the beginning.
The control deviation (set mixer temperature – actual mixer tem-
perature) is 7.5 K. The mixer opens for 7.5 s, then pauses for 2.5 s
and starts again from the beginning.
The smaller the control deviation, the shorter the mixer ON time
and the longer its pauses.
A reduction of the MIXER DYNAMIC value with static control devi-
ation increases the ON duration and reduces pauses.
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