ment from a temperature difference of 8 °C (to the temperature measured be-
fore switching over).
This switching can also be used for layering in a boiler/buffer, so that the maxim-
um temperature is reached in the top part of the boiler using minimal energy and
the remaining energy is stored in the lower part of the boiler. By using layering in
a storage tank, it is also possible to store significantly more energy, as a minimum
temperature is normally maintained in the top part of the boiler. This means that
the temperature difference and therefore the amount of energy is rather small.
In the lower part of the boiler, a high temperature difference of 50 °C, for ex-
ample, can be used.
Switching must be realised by an external contactor. If no temperature sensor is
fitted, an external source (e.g. gas-fired heating) must be used to ensure the min-
imum temperature is met.
As an alternative, the Ohmpilot can also ensure the minimum temperature. This
may result in electricity being sourced from the grid.
The maximum temperature must be set on the heating element thermostat. If
heating element 1 (5) does not have a thermostat, the Ohmpilot can also carry
out this task as an alternative (see chapter Optional settings on page 45).
However, heating element 2 (7) must have a thermostat.
NOTE!
Both heating elements can never be heated at the same time!
Settings in the
menu area
General settings, symbolic representation
1
Open the Ohmpilot user interface (see section Establishing the data connec-
tion).
2
Under HEATER 2, select "Three-phase" and enter the output of the load.
34
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