I have a Mark III, and last month the window was broken by an
errant lacrosse ball. (oops)the stove wasn't burning at the time. (thank god)
anyway, I found out about this secondary air supply, or
air wash for the glass, by the dealer, and again reading
the manual I found online.
I did as instructed, and a week or so later we got cold enough
and I started the fire.
I have to admit, that since the new glass was put in, with it's
new gaskets, the stove didn't seem like itself. I wonder if over the
previous winters that ash may have plugged up this secondary air
supply and it wasn't working as designed.
My daily coal usage was high, ash etc seemed excessive, and I had
a very hard controlling temps and keeping a day long burn constant.
Over this past weekend, I used the old gaskets and stuffed them in the
top front and bottom front of the glass to reduce this extra air into the box, and wow, it seems like it's old self again. long, even burns,, and
much less ash and less coal usage.
Now, Is it me? (still new at this) or is it possible that with this secondary air supply my stove wasn't very efficient?
there is a weighted damper on the stove pipe before it goes into the
masonry chimney, the stove is in the basement of a ranch house, with
a tall chimney going up thru main floor of the house and then up to the peak of the roof... in the center of the house. (not on an outside wall)
Once I noticed this, I am also considering using some foil over the damper to see what kind of affect that may have,,, but from what I read that is really necessary, and may be counterproductive to cover up.