Need advice ... What settings for a pellet boiler?

[Phil532140]

Hello, here are some news:
Annual maintenance done (And that's when you realize that the job done for 215 € ... Well in fact we can do it yourself ... But hey it's mandatory ... Anyway ... ) 2 Seals have been changed and the beauty looks much better. The air flow test is ok. 3 ° this morning outside in Mayenne, 19 ° inside. The "low" point of the heating curve is a priori correct. It remains to wait for the next winter for the rest of the adjustments. Thank you all for your help !

[Did67]

Mandatory ??? She is still under warranty ???

[Phil532140]

No, it is no longer guaranteed. I was talking about the mandatory annual sweeping. Do you even talk to your boiler?

[Phil532140]

Hello,
I come back to this thread to get an idea of ​​the starting T ° that should send the boiler for an outside T ° of 12 °, a set T ° of 19,3 ° with a heating curve of 40 ° for 20 ° and 80 ° for -11 °. I admit that my math bases are .... Nulles ;-)
I have already found the slope: 1.29 ... For the rest I hold. Can you help me find the formula?

[Philippe Schutt]

Something like:
Start = slope * (Foot-Textured) + Foot

If Foot = Text then Td = Foot and the T ° of the room is not changed.
If I apply, your foot is at 29 ° and your slope at 1.22

I guess you have thermostatic faucets to your radiators otherwise you're in pants;)
More seriously, what is the point of heating the water to 40 ° when it is 20 ° outside? Are you sure of your numbers?

[Phil532140]

Thank you for your return, I fully understand your reaction but with this setting for 11 ° outside with a set point 19,3 ° the boiler sends 40 ° in the radiators ... I do not get the calculation done by the boiler
You tell me that the foot is 29 °? How do you find this value?

[Philippe Schutt]

You write the equation with your 2 sets of values, that makes 2 equations. you twist the 1st to have a formula like "slope = something" with slope not appearing in the something, then you replace slope by something in the 2nd. So the only variable is the foot of the slope and you can solve it.
Or
You draw axes, place your 2 points and mark your line. Less accurate but fast.

Do you have thermostatic valves on your radiators? Set tees? What is the difference in temperature between departure and return?

[Philippe Schutt]

To complete my answer the instruction to 19,3 can only be used if there is a temperature sensor in the living room. if there is not this parameter is simply not taken into account.

[Phil31]

Hello everybody

Concerning me, someone could explain the functions compensation and hysteresis on the electronic box and compensation on the inner probe. Problem of adjustment with easypel boiler.

Thank you

[Pilpoill]

Hello everybody

Sorry for this digging up but I am trying to join Dirk Pitt the author of the Excel file on the heating curve.