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Post by Dan (Upstate NY, USA) on Mar 4, 2022 9:38:08 GMT -8
So last fall (2020) I was cleaning my J-tube and the ceiling bricks failed and the brick riser came apart when I was trying to replace them. It had been is service since 2012. So in order to make a quick repair before the heating season I made a five minute riser and really opened the top gap btwn it and the barrel. In doing so I removed a restriction which now causes the stove to overfuel, especially on reload, I could tell when I go outdoors when it does. 20201012_171902 5 minute heat riser side view by Daniel Truax, on Flickr 20201007_185616 Ceiling Bricks by Daniel Truax, on Flickr So I bought myself a Testo because I intend to rebuild the stove into a version of Trev's Vortex next Fall. I wanted a base line to see where I was coming from. But the Testo 310 I bought doesn't use the easy heat software. So I just recorded the CO and O2 every 10 seconds from a video and got the Eff and Stack temperature every minute. Found a way to force Excel to Graph like Easy Heat, if anyone want to know I can send you a copy of the file. Results below. Truax J-tube Run 2022 03 01 by Daniel Truax, on Flickr You can see once the 310 goes above 5000ppm it shuts down so I had to wait for the overfuel condition to stop and then restart the Testo. Above 4000ppm the sensor becomes damaged and the 310 has no auto dilute. Also I am testing downstream of 7 not air tight cleanouts, so I am sure my CO number is diluted with house air and the O2 number is high. Going to seal up the cleanouts and run another test to see how it changes and what I can learn.
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Post by Vortex on Mar 4, 2022 10:20:00 GMT -8
If the CO. is getting too high for the meter you can just take the filter off the back of the probe and it will suck clean air through there rather than flue gas, then when you think it has gone back down put the filter back on. Dont leave high CO. gas in the testo when turned off, if it doesn't do it automatically, always run it through with clean air until it zero's.
The O2 on your graph seems very low are you sure that scale is correct?. It should ideally be around the middle of that graph if that's 0-20%, if it goes below 8% then it will be overfueling.
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Post by Dan (Upstate NY, USA) on Mar 4, 2022 13:31:03 GMT -8
Yeah the 310 is a smart model which will stop and then on restart it will clear itself, never thought about taking the back off the probe off until it clears.
Thanks.
Yeah I just noticed the O2 is scaled wrong, the scaling was one way to force Excel to use 4 scales, I think I grabbed the unscaled O2 instead of the scaled.
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Post by Dan (Upstate NY, USA) on Mar 4, 2022 13:34:16 GMT -8
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Forsythe
Full Member
Instauratur Ruinae
Posts: 208
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Post by Forsythe on Mar 5, 2022 17:58:36 GMT -8
Can I ask (If you remember all these years later) what kind of brick was used for the riser and ceiling which failed? like... temperature rating / porosity / weight?
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Post by Dan (Upstate NY, USA) on Mar 6, 2022 13:12:06 GMT -8
Yeah I'll look them up when I get of these three night shifts...
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Post by Dan (Upstate NY, USA) on Mar 7, 2022 3:46:42 GMT -8
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