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INSTALLATION
Commissioning
Brine pump run-on time with extractor module
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50
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Y Brine pump run-on time [minutes]
X Brine inlet temperature [°C]
1 EXTRACT MODULE 30
2 EXTRACT MODULE 60
3 EXTRACT MODULE 120
4 EXTRACT MODULE 180
SOURCE MEDIUM
ETHYLENE GLYCO
POTASSIUM CARBONATE
WATER
GROUNDWATER MODULE
EXTRACT MODULE 0, 30, 60, 120 and 180
(Only in conjunction with the extractor module LWM 250)
At a brine inlet temperature <10°C, a regeneration of the heat
source system can be implemented in conjunction with the ex-
tractor module and ethylene glycol or propylene glycol as brine.
The settings enable you to determine the run-on time of
the brine pump after the heat pump has been shut down.
The values stated correspond to the run-on time in minutes at an
average brine inlet temperature of 0 °C.
Setting Brine pump run-on time
EXTRACT MODULE 0 1 minute
EXTRACT MODULE 30 30 minutes
EXTRACT MODULE 60 60 minutes
EXTRACT MODULE 120 120 minutes
EXTRACT MODULE 180 180 minutes
If the brine inlet temperature rises, the run-on time of the source
pump is reduced as a result. 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.
Note
The heat pump can only be operated as a ground source
heat pump.
13.3.4 HEATING
CNTRL DYNAMIC
Setting range 0 to 30
The selected control dynamic is a measure of the switching inter-
val between the compressor and the electric emergency/booster
heater. Normally, the preselected dynamic must be sufficiently fast
and without oscillation. Heating systems that respond quickly re-
quire a lower value, whilst very slow responding systems require
a higher value to be set.
HP SENSOR MAX
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 learning function.
Heating circuit pump rating
Here you set the “Rated heating flow rate” (see chapter “Specifi-
cation / Data table”).
13.3.5 DHW
DHW circuit pump rating
Set the maximum flow rate here. If this is noisy, reduce the flow
rate.
13.3.6 COMPRESSOR
IDLE TIME
After a heat pump has been shut down, an idle time is set to pro-
tect the compressor. The default idle time of 20 minutes should
normally not be reduced. Where a reduction is required because
of adjustments or repair work, reset the idle time again to 20
minutes after completing the necessary work.
SINGLE PHASE OPERATION
This parameter must always be set to OFF.
QUICK START
During commissioning, you can test the heat pump function by
triggering a heat pump quick start. When navigating to this pa-
rameter, OFF is shown on the display. If you set it to ON and press
"OK", a quick start is initiated. The respective pumps are switched
on after the heat pump has started. The value of 60 seconds is
visibly counted down to 0 on the display; then the display shows
ON when the quick start begins.
After that, the heat pump and the associated buffer charging pump
are switched on.
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