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 thus the amount of energy is rather small. In the
lower part of the boiler, a high temperature difference of 50 °C, for example, can
be used.
Both the first and the second heating element can be 1-phase or 3-phase. For
two 3-phase heating elements, see Application example 6. If no temperature
sensor is fitted, an external source (e.g. gas-fired heating) must be used to ensure
the minimum 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 1, select "Manual" and "Single-phase or Three-phase".
3
Under HEATER 2, select "Single-phase or Three-phase" and enter the output
of the load.
32
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