OKOFEN Pellematic, which setting?

[droulesse]

Temp. basic is the curve foot.
We therefore play on these two factors to adapt it to its installation.
Note that the temp. starting point thus calculated is further adjusted by the compensation factor.

Start t = Temp. base + slope (15- average outside temp.)

1,4 water law
38 fixed point
average outside temperature 1.3

little question according to the formula 38 + 1,4 * 16,3 = 60,82 ° on my regul 54,6 ° displayed (flow temperature) set temperature 55 after 3 hours of operation
I would like to know if I change the water law is what I see a modification on the regul ie a higher instruction?
Thank you for your reply

[Did67]

You have to check your equation not with the external "average", but at a given moment.

Your regulation constantly adapts the flow temperature, as soon as the outside temperature (or the setpoint) changes. So you have to check the moment you are in front of your boiler: what is the outside temperature measured? what is the flow temperature? Normally, except bug (Dirk Pitt had pointed out a problem I believe, but I do not remember any more), that answers the given equation (and except factor of correction by the probe of environment).

[manet42]

Hello,

I seem to find an error in your calculation:
Starting T = 38 + 1,4 (15-1,3)
It’s 38 + 1,4x13,7 or 38 + 19,18
So 57,18, very close to the set point:

On the other hand, at my place, a small anomaly or bug:
Yesterday, to refine my curve (negative temperatures) I set the compensation to 0. At 23 p.m. the heating was still working ...
Verification, no reduction!
Since I had only made one modification. (rule only one per day ..), I remitted the compensation. at 1.
Immediately cut the heating.
Which seems to say:
With the white rule if the compensation factor is 0, the reduced mode is not engaged.
Other owners of this rule could they confirm?

JC

[droulesse]

Hello,

I seem to find an error in your calculation:

It’s 38 + 1,4x13,7 or 38 + 19,18
So 57,18, very close to the set point:

JC

the outside temperature being -1.3
donc T. départ=38+1,4(15--1,3)=60,82

on the other hand if you could inform me on the spreadsheet xls on the law of water that dirk pitt made no way to find it on the forum
Thank you and good day

[dirk pitt]

I will put it back in this post tomorrow.

[manet42]

Seen, in your first message, the sign - had been forgotten.
With me the formula is suitable to the nearest half degrees:
T = 30 + 1 (15- -1) = 46 setpoint on regulator: 45,4.
Due to the atmosphere 19 ° 6 instead of 19 ° 5 and the compensation of 1.

Kind regards.

JC

[dirk pitt]

thing promised, thing due:
attached the excel file for determining the slope and base of the curve.
some explanations for it to work:
-stabilized and non-transient temperatures must be noted
- the ambient compensation must be removed
- the ambient must be set at 20 ° C
-take at least 3 values ​​(more is better)
-It is necessary to try to take values ​​by very different outside temperatures (cold and mild)

you can only edit yellow cells.

above, the first 2 cells are only used to calculate a flow temperature based on your curve for verification. it is not used for the determination of the curve.

so you enter the slope and the current curve line 6 and 7
you then enter the actual ambient temperatures for several outdoor temperature values.

the points you enter are in purple on the graph with their best line. if you see aberrant points compared to the others, remove them so that they do not influence the line.
the blue line represents your current water law.

then modify lines 25 and 26 to align the purple line with the blue.
you have your new values.
https://www.econologie.info/share/partag ... OozvWq.xls

[droulesse]

@dirk pitt
merci pour tous
droulesse

[droulesse]

@dirk pitt
Hello and good year
little question after 3h30min of starting it always turns temp 68 ° modulation 7 circulator on position 2 it stagnates (it does not exceed 68 °), after I put the circulator position 1 it goes up in temperature but it modulates 1 so I think that it's better because at 76 ° it will stop temp start 55 ° ext temp
-1,3 °.
What do you think.
with the painting I work on the curve foot I wait for the cold
thank you .

[dirk pitt]

@droulesse,
it does not "stagnate", it regulates. it is at 68 °, it's normal, I don't know how much the nominal temperature is with you, but it must be in those waters. so everything is fine, why do you want anything else? she's in perfect balance and wanna change something? we would say that you absolutely want it to stop?
do not change the speed of the circulator while you take measures for the calculation of the water law because the water law depends on the flow (a little)
does not change anything and continues to take values ​​for the calculation of the water law