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+--- Thread: Weather Dependent Operation (/showthread.php?tid=2966)
Weather Dependent Operation - KoBra - 09.11.2020
Did anybody ever made a script weather dependant operation based on outdoor temperature and leaving water temperature for a boiler?
RE: Weather Dependent Operation - AlexLV - 09.11.2020
Hi,
where you plan to use such task? And how you receive temperature? From external temp. sensor or from weather informer? As I know more or less serious heating devices has own temp. sensor..
BR,
Alex
RE: Weather Dependent Operation - KoBra - 09.11.2020
Yes i was planning to use such a task. But if nobody ever made it i had to start from scratch. Data input from a external sensor (but in the end it doesn't matter where the external input comes from for the calculation).
Basically i want to set a setpoint A at outdoor X and setpoint B at outdoor Z. Where AB XZ are input temperatures.
so at setpoint X -10 outdoor i want A 60 degrees and at Z +15 outdoor i want B 20 degrees water temperature.
RE: Weather Dependent Operation - admin - 09.11.2020
The most simple way is to use a linear equation. You can get a formula from two points: https://planetcalc.com/8110/
You should also add min/max limits for the final value.