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Special functions
6.6. - Heat quantity
6.6.1. - Flow rate
When the heat meter mode „Flow rate“ is selected, an approximate heat quantity is
calculated using the values the user has to enter. These are type of glycol/AntiFreeze,
glycol portion and flow rate. These values are put into correlation with the temperature
data of collector sensor and storage sensor. If necessary a correction value for ΔT can
be set: Since for the heat meter the collector and the storage temperature are used,
a difference to the flow respectively return flow temperature can be compensated by
changing Offset ΔT accordingly.
Example:
Displayed collector temp. 40 °C, measured flow temperature 39 °C, displayed storage
temperature 30 °C, measured return temperature 31 °C = results in a correction value
of -20% (displayed ΔT 10 K, real ΔT 8 K = -20 % correction)
The heat quantity measured in the mode “Flow rate” is a calculated
approximation for function control of the system.
This determines the sensor that is used to measure the flow temperature.
This determines the sensor that is used to measure the return temperature.
Set the type of antifreeze used. If none is used, please set to 0.
The amount of antifreeze agent in the system.
Flow rate that is used to calculate the heat quantity
This determines the flow rate in litres per minute that is used for the calculation of the
heat quantity.
Correction value for temperature difference
Since for the heat meter the collector and the storage temperature are used, a diffe-
rence to the flow respectively return flow temperature can be compensated by chan-
ging Offset ΔT accordingly.
Example:
Displayed collector temp. 40 °C, measured flow temperature 39 °C, displayed storage
temperature 30 °C, measured return temperature 31 °C = results in a correction value
of -20 % (displayed ΔT 10 K, real ΔT 8 K = -20 % correction).
6.6.2. - Flow sensor
6.6.3. - Return sensor
6.6.4. - Antifreeze type
6.6.5. - Glycole percentage
6.6.6. - Flow rate
6.6.7. -
Offset ∆ T
Caution
