8 Adapting the unit to the heating installation
24 Installation and maintenance instructions geoTHERM 0020250180_00
7.4 Calling up Live Monitor (checking status
codes)
Menu → Live Monitor
– You can use this function to call up the status code of the
heat pump, which provides you with information about
the current operating condition of the heat pump (Status
display (→ Page 27)).
7.5 Calling up the installer level
1.
Press and at the same time.
– Menu → Installer level
2.
Set the value 17 (code) and confirm by pressing .
7.6 Heating mode flow temperature control
For economical and fault-free operation of a heat pump, it is
important to regulate the start of the compressor. The start-
up of the compressor is the point at which the highest load-
ing occurs. Using the energy balance control, it is possible to
minimise the number of heat pump start-ups without having
to forgo the convenience of a comfortable room environment.
As with other weather-compensated heating controls, the
control determines a target flow temperature by recording
the outdoor temperature using a heating curve. The energy
balance calculation is made on the basis of this target flow
temperature and the actual flow temperature – the difference
per minute is measured and added up:
1 degree minute [°min] = 1 K temperature difference in the
course of 1 minute
The heat pump starts up at a defined heat deficit (under the
menu item Configuration→ Compressor starts at) and only
switches off again when the supplied heat is equal to the
heat deficit. The larger the preset negative numerical value,
the longer the periods for which the compressor operates or
does not operate.
As an additional condition, if there is a deviation of more than
7 K between the actual flow temperature and the target flow
temperature, the compressor is directly switched on and
switched off. The compressor always starts immediately if
a heating demand only just arises from the control (e.g. due
to a time period or switching from gas-fired product operation
to heat pump mode).
Time conditions for compressor operation
When operating the compressor, the following shall always
apply:
– Minimum running time: 2 minutes
– Minimum rest period: 5 minutes
– Minimum time from start to start: 20 minutes
7.7 Calling up statistics
Menu → Installer level → Test menu → Statistics
– You can use this function to call up the statistics for the
heat pump.
7.8 Checking that the product works correctly
1. Start up the product in accordance with the relevant
operating instructions.
2. Navigate to Menu → Installer level → Test pro-
grammes → Check programmes.
3. Check the heating mode using P.01.
4. Check the cooling mode using P.02.
8 Adapting the unit to the heating
installation
8.1 Adapting the unit to the heating installation
The installation assistant is launched when the heat pump is
switched on for the first time.
If you have already filled the heating installation and termin-
ated the installation assistant, but want to set the most im-
portant system parameters again, you can also call up the
Configuration menu item.
Menu → Installer level Configuration
8.2 Heat pump setting parameters
To individually adjust the heat pump, you can adjust certain
parameters in the Configuration menu.
Menu → Installer level Configuration
Parameter Explanation
Language Select the required language here.
Contact data As a competent person, you can enter your
telephone number here. The end customer can
read this number in the menu → Information.
Compressor
starts at
Heat deficit at which the compressor is started in
heating mode. See section "Heating mode flow
temperature control".
Comp. hys-
teresis
Additional condition for switching the compressor
on and off. See section "Heating mode flow
temperature control"
Max. rem.
feed head
Limiting the product's remaining feed head in the
building circuit. If the value is reduced, the pump
speed is limited as far as necessary in order
to prevent the remaining feed head from being
exceeded.
Conf. build
cir. pump
Switching between automatic mode (flow rate
regulation with operation-dependent target val-
ues) and fixed value mode (1-100%). The fixed
value mode should only be selected if the install-
ation does not permit automatic mode.
Boiler supp.
set p.
Flow rate target value for controlling the internal
building circuit pump in the event that the gas-
fired boiler is used for the mixing circuit and
the pump also runs in the heat pump. Only in
conjunction with the VWZ ZK accessory.
Enviro. pump
set p.
Target fixed value for the environment circuit
pump. This setting is used to adapt to the in-
stalled environment circuit (e.g. ground probe or
ground collector).
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