Boiler cycle time oekofen pellematic

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casuette1968
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Boiler cycle time oekofen pellematic




by casuette1968 » 07/11/22, 09:02

Hello,
My boiler displays average cycles of 20 minutes which seems low to me; what can be done to increase these cycles?
Two-storey house of 230 m2 in Deux Sèvres. Cast iron radiators with thermostat; Slope: 0,9 and foot at 30; in comfort from 6 a.m. to 21 p.m. (20°) and reduced (18°);
Attic insulation redone 2 years ago, walls insulated from the inside; the 20° requested are there. 3-way valve ;
Thank you for your feedback.
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phil59
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Re: oekofen pellematic boiler cycle duration




by phil59 » 07/11/22, 16:15

I don't know about pellet boilers, but my old 50 kW boiler, the first start often did not exceed 10 minutes, and after that it was 5 minute cycles, even to start on a 500L buffer tank, from practically at 20° to finish at 40....

The one I put back on the road this morning, does not go much beyond 5 minutes, although it is only a 23 kW ....

For a hydro pellet stove, it would be better for it to run for several hours in a row.
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casuette1968
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Re: oekofen pellematic boiler cycle duration




by casuette1968 » 07/11/22, 17:00

Thank you for your reply !! but having gone through a lot of discussions on the forum I think my cycles are too short!!
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Re: oekofen pellematic boiler cycle duration




by sicetaitsimple » 07/11/22, 18:07

casuette1968 wrote:Thank you for your reply !! but having gone through a lot of discussions on the forum I think my cycles are too short!!

Quite honestly, I have no personal experience with pellet boilers, but why would a 20-minute cycle be too short?
What is 20 minutes of heating and how many stops, or 20 minutes between two starts?
Especially since it's not cold yet, it should change I think with the onset of winter.
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Re: oekofen pellematic boiler cycle duration




by jean.caissepas » 07/11/22, 19:59

casuette1968 wrote:Thank you for your reply !! but having gone through a lot of discussions on the forum I think my cycles are too short!!


I have a pellet stove that had the same problem as you.
I modified 2 parameters to have cycles between 30 and 90 minutes:
- minimum heating power (1/5)
- delta between min and max temperature increased from 2 to 4 degrees (complicated because you have to retrieve the maintenance manual and be able to calculate the maintenance code)

I was fed up with the start-up and cleaning noise at the start and end of the cycle (fans at full speed automatically with no adjustment possible)
In addition, the stresses and mechanical wear due to the cooling expansion of the metal are greatly reduced because there are fewer cycles.
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casuette1968
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Re: Oekofen pellematic boiler cycle time




by casuette1968 » 08/11/22, 08:52

Hello,
I don't know if I can change the heating power on my boiler or how?
someone to guide me?
Goods.
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sicetaitsimple
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Re: Oekofen pellematic boiler cycle time




by sicetaitsimple » 08/11/22, 16:13

You may not have to rush to want to lower the power, especially since you have a large house (230m2) and you say that it works well "the 20° requested are there".

By the way, what power does your boiler have?

Otherwise, to lower the power it is necessary to intervene on the heating body by obstructing a few channels, then resume settings see p64 and more
https://www.maineenergysystems.com/wp-c ... ktuell.pdf
if this is your model.
In short, certainly possible if you're a little handyman, but it's still not just changing a setting with the remote control.

Personally, I would wait for the first cold spells and watch how it evolves before touching anything.
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casuette1968
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Re: Oekofen pellematic boiler cycle time




by casuette1968 » 08/11/22, 17:25

Thank you for this return I will wait for the cold!! it's a 25 KW my boiler !!
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Re: Oekofen pellematic boiler cycle time




by sicetaitsimple » 08/11/22, 17:39

casuette1968 wrote:Thank you for this return I will wait for the cold!! it's a 25 KW my boiler !!


25kW for 230m2 in a not very cold department (Deux-Sèvres), that should do it, without being excessively oversized.
Yes, I think it should be observed over a full heating period before considering any modifications,
especially when the result (maintaining the desired temperature) is judged to be good.
We have seen on this forum so many experiences where it went wrong....
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Re: Oekofen pellematic boiler cycle time




by Pierre61 » 28/11/22, 10:55

casuette1968 wrote:Hello,
My boiler displays average cycles of 20 minutes which seems low to me; what can be done to increase these cycles?
Two-storey house of 230 m2 in Deux Sèvres. Cast iron radiators with thermostat; Slope: 0,9 and foot at 30; in comfort from 6 a.m. to 21 p.m. (20°) and reduced (18°);
Attic insulation redone 2 years ago, walls insulated from the inside; the 20° requested are there. 3-way valve ;
Thank you for your feedback.



FYI, I have a Pellematic compact 32kW, my cycles are between 35 and 45 min which, according to the technician Oekofen corresponds to a good size of the boiler in relation to the house (300m2, 3,5m under ceiling)
You should have a 30 to 35 foot and a 1,4 slope with your setup close to mine
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