Logs not staying caught

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RIMatt

Member
Oct 30, 2018
91
RI
I’ll have flames for a while and then I’ll close the air down a little once the insert is around 450 and I’ll have some secondaries going. If I close it down a little more after a few minutes I’ll start to lose the flame. Secondaries will stay for a little while. The logs just glow. Photo attached. Is It my wood?
 

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I’ll have flames for a while and then I’ll close the air down a little once the insert is around 450 and I’ll have some secondaries going. If I close it down a little more after a few minutes I’ll start to lose the flame. Secondaries will stay for a little while. The logs just glow. Photo attached. Is It my wood?
Probably partly your wood and partly that you have so little wood in there it can't sustain enough temp for secondary combustion once you shut it back
 
Be careful here. If your stove is pretty air tight, you may be starving the fire of air. I've done this once and stopped the flame entirely - the wood was gassing off and when it finally lit back off, it made a boom and blew ash out of every little nook and cranny of the stove. I've since learned when to turn down the air and how much for comfort. Log placement has a lot to do with this too at least in my stove - relating to how much air gets in the firebox.
 
If you're dialed in perfect, you will only have secondaries.
 
Probably partly your wood and partly that you have so little wood in there it can't sustain enough temp for secondary combustion once you shut it back
^This^
 
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Tell us about the wood, I read thread title and thought wet wood. Have you checked it?
 
From my experience 99 percent of the time it is wood not seasoned. Not to say that you might be starving stove for air when it’s not hot enough to sustain secondary combustion.
 
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I’ll check the wood with a meter tomorrow. Im suspecting that it is the wood. I don’t think Its seasoned enough but was curious about other ideas.
 
once the insert is around 450
Run it up another 1-200* before beginning to close down too...450* is just barely enough...
 
Load it up, hes getting secondaries so the wood might be ok, just need more fuel, maybe where you had you air set is a good spot, not all stoves are turned down all the way to operate optimally under the current conditions
 
What I’ve learned with my insert is to be more patient with each change to air. If I’m not, it’ll seem to want to die out. I’m still new to this so take it for what it’s worth.
 
Yep, the wood. If I run "lincoln log" style like that with anything but kindling, then watch out, it takes off.
 
Probably partly your wood and partly that you have so little wood in there it can't sustain enough temp for secondary combustion once you shut it back

This makes me second guess the popular argument of "small fire in a big fire box" approach to oversized stoves if it's not just a quick "air-set- to-high" burn. I can sometimes experience something like this with 16%mc wood, especially if it's only been charred and not to coals yet (one mistake, I suppose).
 
Probably partly your wood and partly that you have so little wood in there it can't sustain enough temp for secondary combustion once you shut it back
Run it up another 1-200* before beginning to close down too...450* is just barely enough...
I haven't run my SIL's PE T5 too much yet, as she's just been burning partial loads so far. The secondary can kick in at 350-400 stove top, and last for a while on a similar amount of wood. I have a good spot on the stove top for a meter..right in front of the top flue exit.
This makes me second guess the popular argument of "small fire in a big fire box" approach to oversized stoves if it's not just a quick "air-set- to-high" burn. I can sometimes experience something like this with 16%mc wood, especially if it's only been charred and not to coals yet (one mistake, I suppose).
Like I say, I've seen it work but I'm not experienced enough yet with the stove to say that I could do it every time. When it works, it will have good secondary action with the air closed all the way.
 
In my picture it seems like everything but the core of the wood is catching which made me think its the wood. Ill check with a meter, load more wood and start to shut the air off when the stove top gets hotter.
 
This makes me second guess the popular argument of "small fire in a big fire box" approach to oversized stoves if it's not just a quick "air-set- to-high" burn. I can sometimes experience something like this with 16%mc wood, especially if it's only been charred and not to coals yet (one mistake, I suppose).

I get good secondaries with half loads turned down to about ten percent air which is normally as low as i can close it on any given load size unless the conditions are just right....they naturally just dont last as long and it is said that the stove isnt as efficient on half loads. It sounds like wood is probably wet cause a load like that should take off pretty well with the air space. RIMatt how far is your inlet closed when this is happens.
 
Run it up another 1-200* before beginning to close down too...450* is just barely enough...
Yes ,most of my stoves dont really get in their groove and burn really clean until 550 or higher. After a few hours i can let them fall back to 400-450 but not on start up.
 
Regarding the wood: I learned early on that a secondary burn won't last unless there is a GOOD 2" of glowing coals in my stove, with seasoned wood on top arranged so that air can pass easily. Unless you have a good bed of coals, as has been mentioned, the secondary burn will struggle and possibly die. I USED to rely on a thermometer (and kind of still wish I had one), but no (2) ever read the same temp while on the stove at the same time, and I gave up trying to "calibrate" them, so I go old-school and rely on the feel, time of burning, visual evidence thru the glass, etc, to manage the burn. Works great once you get the knack. What I DO know is a high-temp, one that you THINK should sustain a secondary burn, can be achieved many ways, sometimes quickly, but may not include that bed of glowing coals. That's the key.
 
Regarding the wood: I learned early on that a secondary burn won't last unless there is a GOOD 2" of glowing coals in my stove, with seasoned wood on top arranged so that air can pass easily. Unless you have a good bed of coals, as has been mentioned, the secondary burn will struggle and possibly die. I USED to rely on a thermometer (and kind of still wish I had one), but no (2) ever read the same temp while on the stove at the same time, and I gave up trying to "calibrate" them, so I go old-school and rely on the feel, time of burning, visual evidence thru the glass, etc, to manage the burn. Works great once you get the knack. What I DO know is a high-temp, one that you THINK should sustain a secondary burn, can be achieved many ways, sometimes quickly, but may not include that bed of glowing coals. That's the key.
Not sure about the 2" coal required. This is a cold stove, top down, 15min in, filled full up to the secondaries. Secondaries light off first thing, and stay that way until things start to turn to coals.
 

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I get good secondaries with half loads turned down to about ten percent air which is normally as low as i can close it on any given load size unless the conditions are just right....they naturally just dont last as long and it is said that the stove isnt as efficient on half loads. It sounds like wood is probably wet cause a load like that should take off pretty well with the air space. RIMatt how far is your inlet closed when this is happens.
Ive been leaving The primary open for about an hour after I light it. The stove will get to 450 ish and then if I start to close down the flames slowly die. So I’ll open the air back up and sometimes the flames start again but sometimes I just get the smoldering glowing logs and to get flames again I’ll have to open the door for a little while.
 
Regarding the wood: I learned early on that a secondary burn won't last unless there is a GOOD 2" of glowing coals in my stove, with seasoned wood on top arranged so that air can pass easily. Unless you have a good bed of coals, as has been mentioned, the secondary burn will struggle and possibly die. I USED to rely on a thermometer (and kind of still wish I had one), but no (2) ever read the same temp while on the stove at the same time, and I gave up trying to "calibrate" them, so I go old-school and rely on the feel, time of burning, visual evidence thru the glass, etc, to manage the burn. Works great once you get the knack. What I DO know is a high-temp, one that you THINK should sustain a secondary burn, can be achieved many ways, sometimes quickly, but may not include that bed of glowing c oals. That's the key.
What stove are you using? I have never needed a coal bed to get secondary combustion and certainly not 2". I also can't imagine running a stove without a thermometer personally.
 
Ive been leaving The primary open for about an hour after I light it. The stove will get to 450 ish and then if I start to close down the flames slowly die. So I’ll open the air back up and sometimes the flames start again but sometimes I just get the smoldering glowing logs and to get flames again I’ll have to open the door for a little while.
That really sounds like wet wood
 
Just split a piece of wood and it’s almost to room temp. Reading 25% about. Looks like I’ll be burning next year.
 
What stove are you using? I have never needed a coal bed to get secondary combustion and certainly not 2". I also can't imagine running a stove without a thermometer personally.
I think he has a Harman Oakwood.