burn your stack clean

[relax]

ok im burning a mansfield ,i burned it for 3 months last spring so this will be the first full season burning...i load it from a warm maybe 175' surface to start,load with maybe 2 large 5x 7 and about 5 or 6 small 3-5'' dia ,light with some paper ,oopen door till i get it burning good,stove top maybe 190 takes about 5-8 minutes,,close the door ,open the draft all the way open and watch the temp slowly rise ,OK how high a temp should be high enuff an for how long to keep the chimney clean,using good aged dry elm ash and in two years bur oak mixture,,, :coolsmirk: ZZZIm

 

[relax]

oh i have been taking it up to about 800-900 when i get it there i give it about 10 minutes and and temp drops to about 600 double wall with a flu temp gage

 

[Bigtim774]

You want a surface temp of around 550-650.

 

[ckdeuce]

You want a surface temp of around 550-650.

Anything over 600 is considered Overfire in a Mansfield. I run mine at about 450-500 for around 1/2 hour, then close it down to keep those temps.

Chris

 

[Highbeam]

Your chimney doesn't know that the stove is made of stone. Same as any chimney, the minimum temp should be 400 on up to 1000 max. Your stove top temp really has little to do with this.

What is a flue temp gauge? If you mean a probe thermometer then the above temps are accurate. If your gauge is a surface gauge then you usually halve the above temps and if you have a surface temp gauge on a double wall pipe then you aren't really measuring anything.

I run my flue temps up to 900 each time I light a fire and then close down the air to hold a 700 degree flue temp until things heat up. Usual flue temps are 600-800. Usual stove temps are 400-500

 

[EddyKilowatt]

I think the deal is you want the stack to be hot enough to prevent condensation, at its coldest point (which presumably is the top). Condensation is what makes the bad creosote. Somewhere I saw greater than 200F as the number to shoot for. You'd have to do some experimenting to find out how much the smoke cools going from your stove to the top of the stack... on my old (insulated) installation it was about 50-75F, and on my new (not insulated) one... I haven't measured yet, but I suspect it's a couple hundred degrees.