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Your contractor has connected an external heat gener-
ator as a second heat source to your heat pump.
Your contractor has set either parallel or alternate
operating mode for this hybrid operation.
Depending on the operating mode and the operating
situation, either the heat pump, the external heat gen-
erator or both heat sources will be in operation.
For switching the heat sources on and off, the follow-
ing control strategies are available:
Ecological control strategy
The heat pump control unit specifies temperature limits
to minimise CO2 emissions.
Factors known as primary energy factors for electricity
and fossil fuels form the basis for the calculation. The
current values of these factors are stored in the heat
pump control unit. They are updated automatically via
the update function.
Economical control strategy
The heat pump control unit specifies temperature limits
to minimise your system's running costs.
For this purpose, you must enter your energy prices for
electricity and fossil fuels, which will be used as the
basis of calculation.
Control strategy with constant temperature limits
Constant temperature limits for the outside tempera-
tures are set in the heat pump control unit.
Note
You can adjust the control strategy for your system
and the energy prices only via the ViCare app.
The control strategy with constant temperature limits
is set by default.
If you wish to retain the factory-set control strategy,
you do not need an app.
Detailed information on the control strategies can be
found in chapter "Terminology" in the Appendix.
Hybrid operation
Setting a control strategy
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