Textile silo Okofen new torn after 2th filling

[Did67]

If you can collect information for a mechanical limitation of the power it would be perfect because I saw on this site that it would take a burner operating time between 30 and 40 'and a downtime of about 20 ', to obtain optimum performance and limit wear and tear on the boiler by a succession of steps / stops.

cordially

1) A 25 cannot, in fact, be physically reduced to less than 22 kW. How you can't make a city car out of a van!

To go below, it's another "carcass", the 20-15-12-10 [depending on the number of open exchangers, and the programming, the same "carcass" can cover all these needs.

2) The downtime of 20 ', I don't see ??? Don't seem serious to me.

On the other hand, in fact, the average burner time, in fact, is an important indicator of proper operation.

There is no amxi.

But low average, below 1/2, are the sign of a "yoyo" operation, incessant walking / stopping.

Generally linked to overkill.

But can also be linked to bad settings.

Besides the P114, two things to note to "pose" the diagnosis:

- what is the boiler temperature reached when it initiates the shutdown procedure?

- what is the modulation level (P162) reached just when stopping ...

[jeavdb]

Hello

I have a Pelletronic Touch, by reconciling the parameters that you raise here is what I have:
P112 (burner start): 2589
P113 (operating time): 999 hours
I also have an average burner time of 23 '
burner stop time 1581 hours
ignitions 2713

These elements therefore give 23 'on and 36' off on the 2 combined heating modes.

As in "reduced" mode there is much more downtime, I looked at the continuous 4 hour times in mode"comfort"; here are the average results:
** from start to end of combustion (I suppose that corresponds to the burner operating time) 25 '
** from the end of combustion to the beginning of the next combustion (I suppose that corresponds to the burner stop time) 20 '

**** Does this cycle 45 '? for you 35 'to 45'

P263 (set temperature) 70 ° you have 63 °
P202 (cut-out temperature) 78 ° ditto you
P170 (I did not find ... but probably this is only accessible to the technician ... that you may be)

**** What do you think of these elements?

If you can collect information for a mechanical limitation of the power it would be perfect because I saw on this site that it would take a burner operating time between 30 and 40 'and a downtime of about 20 ', to obtain optimum performance and limit wear and tear on the boiler by a succession of steps / stops.

cordially

Bonsoir.

If you want we will make it simple with an example; You read parameters 112 and 113 (you keep the time) 24 Hours after you read again the 2 parameters.

Examples:

P112; 9300 (24 hours after) 9314 Diff = 14 Burner operating hours.
P113; 4200 (24 H after) 4219 Diff = 19 ignitions.

Cycle duration calculation = Diff 112 divided Diff 113 multiplied by 60

Which gives 14/19 X 60 = 44 minutes

You practice these readings for several days and then you change the P263 and you see the difference. Amazing that you can't find the 170 (this is an unprotected setting). No, I'm not a technician and I have a heating engineer who is absent.

cordially

[max 01]

For jeavdb
I will take the readings that you indicate to me.
cordially

For Did67
Downtime is good, however I took it between the end of combustion and the beginning of the following combustion.

1 After the end of combustion the fan runs between 4 'and 8' with a point at 15 '

2 After the fan has stopped, combustion will restart after 8 'to 12' with a 17 'peak.

These 2 cumulative durations give the following downtime for readings made the same afternoon after the others: 25 '; 18 '; 12 '; 20 '; 23 'or an average of 20'

The P114 is 23 '

Boiler temperature reached when it initiates the shutdown procedure: between 75,9 and 77,4
It continues to rise while the fan is running at temperatures between 76,6 and 79,4

I can not find on the Touch screen what is the modulation level just at the time of shutdown (P162) is it what the power of the boiler is displayed ???

Thanks for your info

Regards [/ u]

[max 01]

A complement to "my thoughts"

The set temperature (ex P263) is 70 °

At the start of combustion, the temperature of the boiler varies from 67 ° to 70,7 °.

After the fan has stopped following the end of combustion, the boiler temperature varies from 76.6 ° to 79.4 °.

Finally, the boiler temperature is always within a temperature range varying from 10 ° only;

This difference limited to 10 ° can perhaps explain the downtime of 20 'which calls Did 67 ??

*** Maybe the set temperature (ex P263) of 70 ° is set by Okofen recommendations?

*** Regarding the physical impossibility of reducing the PE22 to less than 25kw I am very surprised because my heating engineer had told me that in the 8-25 kw range we could put plugs which lowered the power of the boiler .
Is it really possible ??

[dirk pitt]

agree with did, the burner shutdown time does not provide information on the proper or improper operation of the burner, it depends on the heat demand of the receivers during the shutdown phase.

[max 01]

I stayed for a good part of the day in the company of my boiler ........
Here are the walking times M and burner stop A taken between the titles in the Touch table "start of combustion" and "end of combustion"
20 'step , Stop 19 ', M 15 ' , At 11 ', M 21 ' ,
At 13 ', M 16 ' , At 19 ', M 17 ' , At 20 ', M 15 , At 18 ', M 23 ' , At 12 ', M 28 ' , At 20 ', M 24 ' ,

Did67 asked me the modulation level (P162) reached just at the time of the stop, I couldn't find what it corresponds to on the Touch screen so I thought that the modulation level could be the power boiler that I therefore noted.

On 7 readings, this boiler power just at the time of shutdown varies on 6 readings between 30% and 34% on 1 readings it is 42%.

I am still looking forward to the questions I asked in my previous post with a few details:

*** taking into account the parameters taken into account, the boiler's operation is always within a range with a temperature difference of 10 °.
Is not this small difference one of the causes of the short burner running time?
*** set temperature (ex P263) 70 ° Okofen recommendation not to go lower ??
*** my boiler is a 25kw from the 8-25kw range a physical reduction of the power to less than 22kw by putting plugs is it possible ?? (that's what my heating engineer told me)

[Did67]

*** my boiler is a 25kw from the 8-25kw range a physical reduction of the power to less than 22kw by putting plugs is it possible ?? (that's what my heating engineer told me)

I do not know the "8-25" range.

I know :

- mini (8 kW)
- the 10-12-15-20 kW series [it is the same physical boiler, mounted differently at the exchangers, which must therefore be configured for 10 or 12 or 15 or 20 kW of nominal power; can be changed from one to the other at any time by disassembly / reassembly]
- 25 - 32 kW [therefore a "25" can be increased to 32, but not below!]

Unless recent developments of which I would not be aware!

In the Okofen brochure, a "same series" is easily identified by its dimensions, water capacity, weight ... These characteristics are the same.

Unfortunately, I have the impression that your heating engineer has confused the modulation capacity with the range of nominal powers of a series:

- a 25 kw nominal power modulates well up to 8 kW [to adapt to variations in demand when the external temperature varies]
- but it stays a lot when it's not too cold!
- in my opinion, you do not have the posisbility to lower the nominal power, since you have the lowest nominal power in this series ...

[max 01]

Thank you Did67 for the infos concerning the power of the boiler.

It remains for me to hope that the heating engineer will be able to adjust the parameters to obtain correct performance.

You asked me for different things that I remind you:

Boiler temperature reached when it initiates the shutdown procedure

response 76 ° ... the setpoint is 78 ° which it reaches after the combustion has stopped.

what is the modulation level (P162) reached just when stopping

I do not find on the Touch screen what the P162 corresponds to so I assumed that it would be the power of the boiler that is displayed;
I made this reading On 7 readings the boiler power just at the time of shutdown varies between 30% and 34% and on 1 reading it is 42%. (Outside temperature 7 °)

*** Taking into account the parameters taken into account (P263: 70 ° and P202: 78 °) the boiler temperature is always within a range of 10 °.
Is not this small difference one of the causes of the short burner running time?

*** Can we lower the P263 below 70 ° ??

Here are my On / Off readings:

Here are the burner on M and off A times taken between the titles in the Touch table "start of combustion" and "end of combustion"
Walk 20 ', Stop 19', M 15 ', A 11', M 21 ',
At 13 ', M 16', At 19 ', M 17', At 20 ', M 15, At 18', M 23 ', At 12',
M 28 ', At 20', M 24 ',

Thank you for your help which clarifies the approach to the proper functioning of this boiler.
cordially

[lorrain57200]

Here is what reinforces me on the fact of not overestimating the power ....
just enough not too much or too little!

[max 01]

Hello
Choosing the right power is obvious but the heating engineer is careful not to meet the heating needs of his potential customer and overvalues ​​the power .....
It would certainly be necessary to obtain information before from a thermal engineer ...
Finally, it's done and you have to manage!
The minimum boiler shutdown setpoint was set at 70 ° and the maximum setpoint at 78 ° so the boiler operated at a temperature range of 8 ° which explained its short operating time.
As of February 5, the minimum boiler shutdown setpoint is set to 63 ° (maximum setpoint unchanged) the boiler now operates at a temperature range of 15 °.

The burner operating time is now 48 minutes which is correct.
On the other hand I wonder if the fact of lowering the minimum temperature to 63 ° which increases the thermal shock on the boiler does not harm the longevity of this one.

Is there an Okofen recommendation for this minimum boiler temperature?