Each DXR2 room automation station calculates heating and cooling demand for a room and makes the result available through a group of the central function (supply chain hot water/chilled water).
Outside air temperature
dependent heating curve
The hot water demand setpoint is calculated in the central function using a heating curve based on the outside temperature.
|
| |||
Sp | Flow temperature setpoint |
| TOa | Outside air temperature |
SpTFlDs | 70 °C |
| TOaDs | -11 °C |
SpTFlHi | 25 °C |
| TOaHi | 15 °C |
Figure: Characteristic curve for the outside temperature-dependent heating curve
Demand correction by collected valve positions
Valve positions in the various rooms correct the demand setpoint in the central function based on the number of valves between a value of 70...100%.
Description | Name | Default value |
|---|---|---|
Setpoint correction, if 100% of all consumers are within 70…100%. | SpCorrTFlHi | 5 [K] |
Setpoint correction, if 0% of all consumers are within 70…100%. | SpCorrTFlLo | -5 [K] |