Berlin wrote:As far as some soot buildup in the appliance, see my post above on "burning" it out every once in a while. It's not wood-creosote, you're not going to burn your house down, but blowing the soot out of the connecting pipe and heat exchanger periodically is important.
Just did this after I posted, seems to have made a huge difference. I had probably on the smaller end of amount of coals, maybe a 4" bed with no yellow flame, just a small amount of blue. I sealed off the baro, and gave it all the under fire draft I could for about half an hour, checking the water temp periodically. The coals burned bright yellow, I left it this way for about 15-20 minutes, until it seemed to be cooling off a bit. Then I piled all that up on the one side and added about 3 shovelfuls of maybe baseball sized lumps on the other side. Before I added any coal, I uncovered the baro and sealed up the under fire draft and it seemed to be back to where I could have the firebox door open pretty wide without smoke coming back out in my face. So I think that worked.
*When I mentioned about overheating, I was more concerned with actually boiling the water in my boiler and popping the release valve. It makes a real mess when that happens, and it takes about a day to work all the air out and it sounds like Niagara Falls every time the pump kicks on.
Can you explain a little more about leaving ash on the grates to insulate the fire? Do you mean just don't shake it down as clean as I normally would? Is the idea here to choke it off a little more so it doesn't burn as much and therefore doesn't produce as much soot?
How does one adjust a baro? The only changes I see that could be made with mine are the whole T part of the pipe can be rotated a few degrees from horizontal on the flue pipe. I think I asked this before, and the first step was purchasing and installing a manometer. Which I admittedly have not done and probably should.
I think I've got good secondary air, the vent on the firebox door is wide open, its a circular one with the 3 triangle pattern of holes. I'm also probably pulling in some air to the top of the fire through the oil gun on the back of the unit. If there is smoke in the firebox, I try poke it up and rearrange things to get an abundance of flames.