jasonp wrote:I have a Harman mark 3 coal stove and Im trying to figure out where to set the Barometric Damper and where to set the manual draft control on the front of the stove. I noticed my stove never really gets hot and neither does my pipe. I have had the Barometric damper OPEN quite a bit thinking it would keep the heat in my house and not the chimney is that how I should keep it, open as much as possible to keep the heat in the house? But Ive read all over the place that many coal burners close off the Barometric damper with foil or remove it all together/never install it. But wouldn't that increase draft which increase the heat lost through the chimney? Should my pipe be hot to the touch? I read one E-how pipe should ideally be 350-400 F. before barometric damper. I feel like I have an overdraft problem not under draft. Any help is appreciated.
I'm sure we can help, but we may have lots of questions. You can also put more information in your profile -- like where you are located. Who knows, one of us might be nearby.
If you can, post a picture of your stove and pipe and barometric damper. Tell us what your chimney is like -- is it brick, does it run mostly inside the house or is it entirely outside, and so on.
You say the stove and pipe don't get hot. Do you have a magnetic thermometer or infrared thermometer to see what temperature they actually are? -- you really should have one.
Are you having any trouble starting the coal fire and keeping it going?
Do you load the coal to the top of the fire-bricks once you have it burning? (You should.)
Assuming the coal is burning well, AND is filled to the top of the fire-bricks, you could start by sealing the barometric damper with foil -- if the coal is burning well, stove and pipe should both be too hot to touch. Then unseal and adjust the baro. Harman recommends draft of 0.06 to 0.10 for your stove. If your barometric damper has a calibrated scale, set it to about 8 to start, and see how that does. Ideally you would also have a manometer to check the draft, in which case you would go by that rather than by the baro scale (do a search for "manometer" in the box at the top of the screen if you don't know what it is). If draft is too high (baro closed too much), you will lose some heat up the chimney. If draft is too low (baro open too much), you may have trouble keeping the fire burning, and/or the stove may be very slow to respond when you open the spinner to give it more air. You just have to find the sweet spot.
The easy answer to how much to open the inlet spinner is, open it enough to maintain the desired stove temperature, which typically is anywhere from 200 to 600 degrees depending on how much heat you need.
Hope that helps, but feel free to come back with more questions.