Scotte weather settings

[kpihus]

Hi,

I hope here is some english speaking users as well.
I have little missunderstanding with Scotte weather settings.
There is parameter called "P-Led" but i done understand how it affects the system.
Manual says that it should tune heating according to house temperature change. But as my knowledge there should be some base value to compare with.

What that parameter actually means and how it works?

[michael f]

Hi,

I hope here is some english speaking users as well.
I have little missunderstanding with Scotte weather settings.
There is parameter called "P-Led" but i done understand how it affects the system.
Manual says that it should tune heating according to house temperature change. But as my knowledge there should be some base value to compare with.

What that parameter actually means and how it works?

P joint is to control the rate of change of weather compensat valve like this http://www.nbe-shop.dk/index.php/traepillefyr-kedler-og-reservedele/traepillefyr-tilbehor/3-vejs-motorventil-3-4-til-vejrkompensering.html

[kpihus]

I have regular 3T valve for that. Does it still function with it ?
And how changing this parameter affects system ?
For example if i set it solver what happens, and when i set it higher, what happens ?

[michael f]

I have regular 3T valve for that. Does it still function with it ?
And how changing this parameter affects system ?
For example if i set it solver what happens, and when i set it higher, what happens ?

I do not know which valve you have, therefore I do not know if it will work, but do not think so, since it must be slow moving.
It is a PID regulating, like the others in the control, except that you dont  have I and D.
Low setting is slow change, high settings quick change.

[MHES]

The "P-led" is the P-factor wich controls the pulse-length of the control output for opening or closing the valve.

In a fixed time pattern the actual temperature is subtracted from the wanted temperature.
The sign of the result (plus or minus) determine if the valve will get an "open pulse" or a "close pulse"
The absolute difference (result without sign) determine, together with the P-factor, the length of the opening- or closing pulse.
The absolute difference is multiplicated with the P-factor and translated into a time-length.

This means:
The higher P-factor, the longer pulse-length.

Best regards
Michael

Hi,

I hope here is some english speaking users as well.
I have little missunderstanding with Scotte weather settings.
There is parameter called "P-Led" but i done understand how it affects the system.
Manual says that it should tune heating according to house temperature change. But as my knowledge there should be some base value to compare with.

What that parameter actually means and how it works?

[kpihus]

Got it, thanks. I've got my graphs lot better after tuning it: http://helios.itegard.ee:3000