Herz BioFire 1000, Operating Instructions Manual

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Temperature manager 8
17
If there is no buffer in the system, then the MUST-temperature from the individual modules is determined and
to that an adjustable temp. increase is added. The highest of these temperatures is the boiler-MUST-
temperature. To this an adjustable hysteresis is added and the result is the boiler-END-temperature (see
Figure 8.4). Caution: Consider the set minimum requirement.
Figure 8.4: Example temperature manager when operation without buffer
If a time mode is applied directly on the buffer, then the required buffer-top-temperature is set directly in the
time mode module. Now it must be distinguished again if the buffer-top-temperature is higher than the
adjusted buffer-bottom-MUST-temperature. In this case the required boiler temperature is the result of the
required buffer-bottom-MUST-temperature + the adjusted temp. increase + the adjusted difference (see
Figure 8.5). In this is not the case, the required boiler temperature is the result of the required tempe
the adjusted temp. increase (see Figure 8.6). Caution: Consider the set minimum requirement.
Figure 8.5: Example temperature manager when time mode with difference