Herz firematic PELLET 120, Руководство по эксплуатации

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8 Temperature manager
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8 TEMPERATURE MANAGER
The heat demand of the individual modules (boiler, hot water tank, heating circuit, solar, etc.) is controlled by
the temperature manager. The below-mentioned scheme explains the functionality of the temperature
manager. From the individual modules the MUST-temperature is determined and to that an adjustable temp.
increase is added. The highest temperature of all consumers is transferred to the buffer which is the buffer-
top-MUST-temperature. In the buffer there are now the buffer-top-MUST and an adjustable buffer-bottom-
MUST-temperature. To the higher temperature of these an increase and a difference (not always!) are
added. This temperature is the boiler-MUST-temperature. In addition, there is the minimum requirement in
the boiler setting. This is the minimal boiler must temperature during operation of the boiler. For example: If a
required temperature by the consumer is lower than the minimum requirement, the boiler automatically
selects the minimum requirement temperature.
The boiler-END-temperature results from the boiler-MUST-temperature and the adjustable control hysteresis.
The boiler switches to the "Ready"-mode if the buffer-bottom-MUST-temperature is reached before the boiler
END-temperature and the buffer-top-temperature is higher than the highest request to the buffer.
The boiler max. temperature is 90 °C. Increases the calculated boiler-MUST-temperature + control
hysteresis above the boiler max. temperature the set control hysteresis is subtracted from the boiler max.
temperature and the boiler-MUST-temperature is corrected downwards. Then the boiler reaches the actual
MUST-temperature during the control phase.
Figure 8. 1: Temperature manager (simplified schema
– example)