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hello to all okofen enthusiasts!
it is true that it is a great love story this machine! I am equipped with a pellematic cmp1.4 from 2007 - coupled with a solar water heater and with a screw connected to a silo textile.vielle well insulated house.
she has always given good service, except for a large production of kreosote in the arrival of pellets that I methodically cleans every month 3 with the rest of the boiler (I am a perfectionist). nobody has found the solution.
but after an absence of 3 months in autumn, the house was at 10 ° in December, and the re-heating of the heating was long and tedious. we had a little 17 after 4 days of heating without understanding this slowness. the heating engineers who know nothing about okofen did not help me, only an okofen "expert" reviewed all my parameters and detected a weak pump that we changed. but with the warmth, the ambient temperature dropped by 2 ° and I began to take a serious interest in all forums okofen to tweak my regulator .. and I thank you all for your experiences because for the moment it is good in the house. on the other hand if I make hot water during the day the temperature drops quite quickly so I do it from 3h to 5h in the morning 55 °.
we have radiators fonts and aluminum.
I have a probe room in a corridor not directly heated. 19 ° asked gives me 20-21 in the living room.
here are the last parameters

TP asks 19 °
P202 / 80 ° 76 °
P4-7 / 65 ° 63 °
P5-8 / 9 ° 12 °
P263 68 °
curve / 1,2 1,6
foot / 30 ° 40 °
comp - / 0 / 3

the boiler was in 15kw (4 plugs) I passed it in 13kw with the 4 plugs in place.car my start times are 18mm (since always) so I try the 13kw and these did settings.

my expert told me that it would be better to do this.
--P202 80
- S 4-7 60
- P263 left 70
I do not know what to do.

thank you for reading me and I am interested in your lights ...

Jean-Jacques wrote:.... because my start times are 18mm ..

what do you mean by start time ???
Is this rather the running time between 2 stops?
if so, try to see what happens between the regulation level and the boiler temperature.
in general, a great classic is a phase difference between the power regulation and the opening of the V3V which makes that during much of the start of heating, the regul is thoroughly with a V3V closed because of boiler temp too low and that when the temperature starts to rise, it goes up very quickly and the V3V finally opens but too late, or a boiler stop in high temperature.
pass 2 cycles while staying in front of your boiler and check this hypothesis.

ok dirk i will do that. thank you
actually it is the average cycle time of burner firing ...

if I modify the parameters for 60- and 80, it makes me a range of 20 °.
should I, therefore also modify the 5-8 to 19 or 20?

AVERAGE TIME OF 19MM BURNER
if it's from pellet control ...
start at 63 °
the valve closes at 60.3 ° (from pellet control)
the valve opens 5 minutes after the burner has 67 ° and with a tp ° of 25 ° output in the v3
the burner stops after 19mm from 76 °
the temperature goes up to 77.7 ° then down to 63 for a new cycle. the valve remains permanently open by fluctuating between 6 and 10 until the burner is restarted at 60.3 ° or it closes at 0 for 4-5 minutes.
herewith pdf with schema
ps / there is a RS232 connector on the motherboard - I saw a program in vb5 hacked for the frolig - would it fit on this machine cmp 1.4?

please

I do not know if we count the time of the burner from start - ph1 ph2 or small rectangles. if it is from start up it is 23 minutes of cycle.

I forgot to ask you to look during the burner operation phase to indicate the number of barrettes of the regulation.
it seems that this is the classic case of the regulation which starts at the bottom of the box and has no time to slow down before filling up the value of maximum temperature.

RE
so I noted this info. at 61.6 it is at 4 bars at 4mm
70 is 3 15mm
72-2 bars 17mm
a 74 -1 bar 19mm

Jean-Jacques wrote:RE
so I noted this info. at 61.6 it is at 4 bars at 4mm
70 is 3 15mm
72-2 bars 17mm
a 74 -1 bar 19mm

what are the mm ???

about setting your parameters, is your P170 at 1?
it is important to change the priority of the burner stop orders.
little reminder for regul TEM (I think it's your case):

Starting the burner:
In all cases, the "demand" of the TEM regulation symbolized by a "square" on the right of the digits of the days is required.
This request is activated if the boiler temperature is lower than the parameter (4-7) AND if no lower limit has been reached: values ​​(3-3) and (3-4).
In addition, if the previous stop of the burner was caused by the reaching of the limit (P202) (PLC) AND that the "request" by the regul TEM is always present, the burner restarts at the temperature (P202) - 5 ° C.

Burner stop:
the stop of the burner depends on two events according to the state of the parameter P170:
If P170 = 0, (factory setting) the stop is made by disappearing the request of the control EXCEPT if the limit P202 has been reached before.
If P170 = 1, the disappearance of the demand of the regul is ignored and the burner stops only when reaching the limit P202.

Concerning the disappearance of the "request" of the regulation TEM, this one intervenes when the boiler temperature is higher than [4-7] + [5-8] or when another limit is reached: limit in lowering, passage in summer mode, etc.

not simple.
I advise you to make a test by setting the following parameters (note well your current parameters before)
next boiler automaton:
P170 = 1
P202 = 76
P263 = 69
P281 = 65

regulated side:
4-7 = 63
5-8 18 =

that way your boiler should stop to 76 ° climb a little higher with the inertia but does not reach 63 + = 18 81 (if the achieved increases 5-8) and restart early way to 71 (76 -5)
thus restarting quite high, the time it starts, the temperature will fall only to 67 or 68 about avoiding the closing of the V3V. moreover, as the setpoint (P263) will be almost reached at start-up, the modulation should be very quick and the temperature will be almost stabilized.

hi dirk
Thanks for taking time to respond to me.
meanwhile, I applied your pump connection on UW with 1 histeresis around 64. yes I have the P170 = 1
I lowered my boiler in 12KW
last parameters I was not far from yours ...
202 76 =
263 68 =
4-7 63 =
5-8 12 =
281 64 =

I will try the 5-8 = 18 and 263 = 69. and I tell you what .. hours spent next to her ....
a question: how is it going for DHW manufacturing when the heating pump is no longer regulated. 2 pumps rotate at the same time? or the V3 closes for the ECS priority?