Lightning wrote:hcarlow wrote:Like I mentioned in another post I do have a cap on the chimney so that is part of my problem I would guess .
My chimney is capped too, I personally don't think that a cap would inhibit draft whatsoever.hcarlow wrote:These coal boilers and stoves are so efficient they don't have enough heat going up the chimney to keep a good draft ,at least that's my case . When my boiler is at idle you can put your hand on the flu pipe with no problem and can almost do it at anytime .
This is more likely the reason for poor drafting during warm temps outside. Try keeping a window open to the boiler room so air pressure can stay balanced with the outside.
Thats good to know about the cap . I have a walk in basement so I kept the door open with just the screen door shut and really didn't see any difference in the draft in the fire box area , mostly zero unless a breeze would come up . During the winter months it would range from .02 to .04 .