ridgeracing wrote:So the air tubes are actually getting fresh air from outside of stove? I would think that would be like opening front door and letting air in, just in smaller amounts.
LDPosse wrote:ridgeracing wrote:I was curious, the drilled secondary holes, are they just bringing fresh air from ash pit to flow above fire?
There is a small tube on each side of the stove that feeds the secondary air holes. If you shine a flashlight in against the mesh sides, you can see the air intake holes, just below the level of the door.
SteveZee wrote:It's those lack of blue flames that will one day cause the puff back all the way to a boom depending on the situation. I like to rev mine till I see some blue and then set it for the next cycle. I've never had a puff when doing that.
SMITTY wrote: Harman Mark III manual says the same - .06" minimum. My stove runs just fine at .03" - .04" ... and even at .02". Basically as long as it's PULLING draft, your good. Only thing is, with draft that low it takes FOREVER to get the fire going on a reload, and the puffback potential is in the RED zone.
ridgeracing wrote:I am new to this stove, but I have been loading/shaking my stove every 24hrs, coal is down to just below hopper with red coals but no blue flames. I shake for 4-5 seconds, open ash door and shake a little more (3-5) till I see red coals, close door, fill hopper, everything is closed and cycle continues till next morning. This has been with low outdoor temps (upper 30s-40s), 2 1/2 on dial, damper closed and 270 stove temp.
rberq wrote:When reloading the Harman I would always clip the baro in closed position to get even more draft, then unclip it once I had blue flames.
ridgeracing wrote:If I see blue flame or flames dancing, is it ok to load with coal, am I past the explosion period?
rberq wrote:SteveZee wrote:It's those lack of blue flames that will one day cause the puff back all the way to a boom depending on the situation. I like to rev mine till I see some blue and then set it for the next cycle. I've never had a puff when doing that.
Also it's a good idea not let the hopper get completely empty, and not shake down too much at one time. Otherwise when you fill the hopper (or shake down a lot) you can end up with a layer of cold new coal on top of your fire. Boom potential. I'd recommend shaking twice a day instead of once, even if it's only a "partial" shake, and top off the hopper then if there's any danger of it emptying.