Hi All, I'm new guy to post a message although have been reading this forum for some time already.
I have relatively bad "puffing" problem with my EKO 80kW boiler. Gasification and all other aspects of the heat generation process seem to work nicely, but my EKO keeps puffing the smoke out and the gasification gets interrupted.
In detail: I have 1320 gallon (5000 litres) water storage and 80KW EKO which I typically use with 12mm primary air opening, 4 full turns of secondary air opening and 100% fan opening. I always make the embers with care, and I load relatively dry wood (around 20%, mainly a mixture of birch and spruce). I use mixture of different size log as my fuel. My gasification starts nicely and I get nice gasification and smooth process for the first hour or so.
But after that the EKO starts to do these puffings. It's like the gasification gets too strong, EKO puffes smoke out, the gasification stops, gasification starts again only until EKO does the puffing again. This cycle goes on and on resulting in lots of smoke (and very little heat).
I have tried using larger log and adding some wet wood inside, but nothing seem to work. I have tried quite many different styles of log sizes and wood moisture contents.
I think it must to do with the air adjustments, as my understanding of the puffing is that the gasification is too fast. But I'm not sure how to tweek the primary and secondary air controls. I went through lots of trouble to adjust them to have good gasification process, so I'm little afraid to touch them too much.
Any idea what could be the root cause of my problem, and how to get rid of puffing (without messing up the gasification process). Thanks in advance.
I have relatively bad "puffing" problem with my EKO 80kW boiler. Gasification and all other aspects of the heat generation process seem to work nicely, but my EKO keeps puffing the smoke out and the gasification gets interrupted.
In detail: I have 1320 gallon (5000 litres) water storage and 80KW EKO which I typically use with 12mm primary air opening, 4 full turns of secondary air opening and 100% fan opening. I always make the embers with care, and I load relatively dry wood (around 20%, mainly a mixture of birch and spruce). I use mixture of different size log as my fuel. My gasification starts nicely and I get nice gasification and smooth process for the first hour or so.
But after that the EKO starts to do these puffings. It's like the gasification gets too strong, EKO puffes smoke out, the gasification stops, gasification starts again only until EKO does the puffing again. This cycle goes on and on resulting in lots of smoke (and very little heat).
I have tried using larger log and adding some wet wood inside, but nothing seem to work. I have tried quite many different styles of log sizes and wood moisture contents.
I think it must to do with the air adjustments, as my understanding of the puffing is that the gasification is too fast. But I'm not sure how to tweek the primary and secondary air controls. I went through lots of trouble to adjust them to have good gasification process, so I'm little afraid to touch them too much.
Any idea what could be the root cause of my problem, and how to get rid of puffing (without messing up the gasification process). Thanks in advance.