Angelo wrote:as soon as I see Blue Flames, can I shut down my air intake?
I have a different Harman, but: I find the stove temp drops a lot when I add a new load of coal. If I close the air down as soon as I see blue flames, it takes a long time for the stove temp to come back up to where I want it, and the room cools off during that time. So I generally give it lot of air for awhile, with very vigorous blue flames, until it get somewhat above my target temperature. Usually by then I can see red coals, not on top, but within a couple inches of the top. Then I shut down the air intake to where I want it. Sometimes I shut down too early and have to repeat the process.