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Energy fed into the grid (power supply utility):
The electricity meter shows the output without a plus/
minus sign in front of it.
Functions for the utilisation of power generated on
site
Enable one or more functions for the utilisation of
power generated on site. The functions that can be uti-
lised depend on the appliance type.
If you enable several functions for the utilisation of
power generated on site, the functions for DHW heat-
ing will have priority over the functions for central heat-
ing.
To utilise the power generated on site, you can raise
the set temperature for some functions or lower it for
cooling.
Possible functions for the utilisation of power gener-
ated on site:
DHW heating
Heating the heating water buffer cylinder
Central heating
Central cooling
It is a condition for the utilisation of power generated
on site that the relevant operating program for central
heating, central cooling or DHW heating is set. E.g. the
operating program "Heating and DHW" or "Only
DHW" must be set for DHW heating.
Example: utilisation of power generated on site for
DHW heating
If sufficient power from the photovoltaic system is
available, the heat pump will be operated for DHW
heating using this power.
In the time program you have set the time phases dur-
ing which DHW heating is enabled. In order to use as
much of the power generated by the PV system as
possible, DHW heating may also be switched on out-
side the set time phases.
In order to make more effective use of power gener-
ated on site, set an increase for the DHW temperature.
Standard DHW temperature:
50 °C
Increase the DHW temperature when utilising power
generated on site:
10 K (10 Kelvin)
The DHW is heated to 60 °C. If DHW consumption is
the same, the next DHW heating period using power
from the grid is postponed until later.
Note
In parallel to the utilisation of power generated on
site, a percentage of power can be drawn from the
grid for operating the heat pump: e.g. if the amount
of power generated on site is insufficient to drive the
circulation pump. Your contractor can set the level of
this percentage.
Only for air/water heat pumps (not all types):
To raise and lower the set temperatures, your con-
tractor can implement a setting that will automatically
match the compressor output to the amount of power
generated by the photovoltaic system. This prevents
power for operating the heat pump being drawn from
the grid.
Utilisation of power generated on site and utilisa-
tion of excess power from the grid (Smart Grid)
If the utilisation of power generated on site and Smart
Grid are enabled and active, the function with the larg-
est temperature increase or reduction applies.
Electric booster heater
If the required room temperature or DHW temperature
cannot be achieved with the heat pump alone, an elec-
tric booster heater (if installed) can be activated.
Examples of electric booster heaters:
Instantaneous heating water heater:
For central heating and/or DHW heating
Integrated into the heat pump or into the flow of
your heating system
Immersion heater:
For DHW heating
Integrated into the DHW cylinder
Note
Constant operation of an electric booster heater
results in high electricity consumption.
You can set a time program for the electric booster
heater.
Enthalpy heat exchanger
In ventilation units with heat recovery, the cooler sup-
ply air is preheated with the heat from the extract air in
the integral heat exchanger. For this, neither air stream
comes into direct contact with the other.
Appendix
Terminology (cont.)
5817913
90


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