dirk pitt wrote:
In fact, the boiler has many more parameters than that. My installer "forgot" his installer manual with all the interesting parameters, the ones I showed there are accessible to everyone.
Is this the "installer manual" of the "universal heating controller with cascade and solar function" ???
I have it too, but there are translation mistakes and the "automatic" translation of some parts is not clear! I may get the original in German on another forum.
I am currently running into a problem of hysteresis of the regulation: my boiler has a minimum of 63 ° C (I lowered it, it is normally 65 ° C); but it is also at this temperature that my regulation "closes" the 3-way valve to protect the boiler.
So I always have an interruption in the heating every time I restart.
But if I raise the minimum temperature, the boiler stops because it exceeds its maximum of 75 ° C before being able to slow down and regulate ...
With the condensing system, I have 60 liters of water in the boiler. So the boiler "runs away" before the cold return arrives in the boiler - e, in any case to the probe! - and that the temperature does not stabilize!
I had for a long time an operation in "oscillation". I got out of it, but I still have this problem of "closing" on restart then opening after ten minutes ...