titleist1 wrote:i guess don't understand how you are setting up your testing at different pressures with the different openings or what you are trying to determine.
my baro position and the mano readings are the opposite of yours. i do not have a draft inducer or a manual damper. my manometer is connected prior to the baro. after the stove has reached firing temp (as opposed to idle temp) if I intentionally close my baro to the position you have in your first pic my draft will read roughly .06 depending on how cold it is outside. if i force open it up to the position you have in the last pic the draft will drop to about .02.
if i leave the baro to work on its own, it will maintain a .04 reading on the manometer while being open varying amounts from all the way closed to just about wide open, depending on the wind.
I realize the mention of using the draft inducer and manual damper to manipulate the draft pressure may have confused some people
. I was trying to get a reference for where others set their weight on their baro door during "normal" burning conditions. So the pictures at -.04 and -.05 don't really apply since I used the inducer to exceed the drafting strength of the chimney. It seems that with my set up, my baro will keep the draft inside a particular range, for example between a -.02 (where it starts to open) and a -.04 (where its approaching a 45 degree angle) which is a .02"wc range.
Larry says his stays in a .01 range (-.04 starts to open to a -.05 where its almost wide open) a narrower range for a more consistent draft pressure. I likey
Its amazing how sensitive a hand fed is to draft pressure (mine seems to be). My furnace ran between 260-263 degrees all night long. This morning I saw my baro was holding draft at a -.02"wc with the baro door open at about a 60 degree angle. I decided this was a hair weak (I have a fiddling issue
) SO, I moved the baro weight toward the door about a 1/16 of an inch so it would hold it at a -.025"wc.. This small adjustment in draft caused my furnace temp (measured over the load door) to increase 12 degrees (from 261 to 273 degrees) over the period of an hour.