Weather Dependent Operation

[KoBra]

Did anybody ever made a script weather dependant operation based on outdoor temperature and leaving water temperature for a boiler?

[AlexLV]

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

[KoBra]

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.

[admin]

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.