Jotul F 600 running issues

Congrats on the stove! What part of Central MA are you in? Couple questions; what do you mean by dryer wood? How far are you closing the primary air? Do you have a stove top thermometer and or flue thermometer and if so what temps are they reading?
You want to, and will see, flames engulfing your fire box, thats what the stove is designed to do. Do a search here on secondary combustion or flames of hell to better understand whats going on inside of your new stove.

also take a look at this video about operating a modern epa stove

http://www.ec.gc.ca/cleanair-airpur/videosWoodstove_mgt-Eng.wmv

Litening1273 said:

I recently bought a Jotul and have been running it for several weeks. I am using drier wood the last few days and the fire is insane. When I load it up for the night I close the lower air flow controll and close the damper on the stove pipe. You can watch it instantly engulf in flames and it will burn at turbo speed half way thru the night. When I get up in the morning about 8 hours later there's barely any coals left. What is going on?

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What species of wood you burning ?

WoodButcher

Litening1273 said:

I recently bought a Jotul and have been running it for several weeks. I am using drier wood the last few days and the fire is insane. When I load it up for the night I close the lower air flow controll and close the damper on the stove pipe. You can watch it instantly engulf in flames and it will burn at turbo speed half way thru the night. When I get up in the morning about 8 hours later there's barely any coals left. What is going on?

Click to expand...

I'm thinking you're doing everything right . . . you're getting the fire going and then closing down the air and the result is the wood catching on fire and then going at "turbo speed" which sounds a lot like the Bowels of Hell (aka Propane flames) fire you would get from secondary combustion.

Are you able to close the air control all the way shut or just part way? Being able to shut it all the way (if the wood is dry enough) will help extend the burn time a bit. Another factor is what you're burning for wood in terms of species and size and how much you load up the firebox. For maximum burn time (and coals) you will want to put in larger sized splits or rounds in the firebox for the overnight burn (vs. smaller splits), more of the denser wood species if you have them (i.e. oak, hickory, sugar maple, etc. vs. birch, silver maple, poplar, etc.) and fill up your firebox (the two times I really try to fit a lot of wood into the firebox is when I leave for work in the morning and when I do the overnight burn) . . . for me I generally stuff quite a bit of wood into the firebox, leaving 1-3 inches of space between the baffle tubes and top of the firewood.

Finally, if you're like me you might have had a different definition of "burn time." Of course the numbers thrown around by Jotul and other manufacturers really don't tell you exactly what they mean by burn time. Going in I pictured burn time to be the time when the woodstove started producing meaningful heat to the time when the fire began to die . . . of course burn time could also be the time the fire is lit to when the last coal is extinguished . . . or when meaningful heat is produced (at say Stove top temp X) to when the heat as measured by the stove top temp goes below temp Y . . . fact is, no one really seems to know.

I tell folks that they need to take the burn time estimate with a grain of salt . . . with the goal being of learning how to run your stove so you can load the stove for an overnight burn and then wake up the next morning with enough coals so that all you need to do is throw some kindling or small splits on them to restart the fire. Expecting to wake up after 8 hours to a roaring fire is unlikely . . . unless your house has somehow caught on fire.

So it's burning hot as he11 for half the night and you have coals left 8 hrs later when you get up in the morning...hmmmm....yes I see where that could be a problem.....

JK sounds like you are on the right track post back with some temps and what kind of wood you are using. If you want a longer fire...add more/denser wood

I would recommend checking all the gaskets. Especially making sure that the door is sealed. We burn a F-500 and we can get close to 11hrs of burn and then have hot coals to start it right back up

Sounds weird! In my Jotul I always close the air all the way before bed. A couple times I left it open a tad and it took off like you say. I think there is a certain point where the wood has no more moisture in it from burning and it takes off like crazy. I am like you, my wood was cut from last december till March. It is less than seasoned like yours, still lotsa moisture to burn off before it burns like crazy. All the rain we got this past summer didn't help!