Don't worry about too many posts - I was just trying to tie a few points together from the others.
CoalBurner5 wrote: 8<... Chimney does not go over the height of the house, but it is still 40ish feet up. I checked at the top of the chimney for heat and it hot. WHY NO DRAFT?
The only possible problem that i can think of is that the chimney is not high enough. Barometric draft is not moving as we do not have any down draft. Just not a good pull of air from the firebox up the chimney. Suggestions?
A barometric damper isn't designed to control a down draft. That's a positive pressure draft and you don't want any of that. Since you have -.03 (negative="pull of air from the firebox up the chimney") measured draft and the barometric damper is set to -.04, then the damper should not be open. It would open only when the chimney is drafting greater than what the baro damper is set at: at -.06 chimney draft & the baro set at -.04 it should be open.
CoalBurner5 wrote:..8<...There is nothing within the probably 25 feet radius of the chimney cap. AND I MEAN NOTHING. There are trees around the house, but i'm in the process of having them logged (rainy weather here is causing that process to take longer than i wanted).
This is starting to get expensive as i'm heating this whole house with oil and the efm oil gun isn't the most efficient thing out there.
I'm just at a loss of words and don't know what to do next.
Your'e running your 520 on oil? When you were measuring the draft, was that with a coal fire burning or was the pot out? If it was with the oil on line only and burning, -0.1 to -.03 seems to be bracketing a normal oil burner forced draft.
Sounds like the 2' higher then the closest object, house, roof or otherwise is satisfied.
- Are the trees taller than the chimney/house? I had a similar problem with a wood burner but they run the chimney much hotter than coal does
- If the picture is a chimney not higher than your rooftop and tall trees nearby (just over 25' away), there could be considerable turbulence - especially in warmer damp weather. From this picture, your chimney top seems to be in a virtual 50' wide canyon that in warm weather could be troublesome
- How much of the chimney's height has four sides exposed to the weather? How much of the rest of the chimney inside the house?
All the items you've listed over the four threads are forming a verbal picture of bunch of small but troublesome things that taken together could impede your chimney draft. Keep in mind that when it gets cold, chimney draft should increase.
Are pictures possible? We really need pictures.