On Jan 26, 3:47*pm, wrote:
the installation instructions it says to adjust the counter balance
for desired draft, but what's the desired draft? *what position should
it be on when furnace is firing/not firing? *thanks!

Jenn,
the pros will tell you you need an instrument to set this and they use
one to do it. But as one home owner to another, you can roughly set
it without a guage but err on the safe side and set it so that it is
just closed when the furnace has been on for a while and everything is
all warmed up. If you set it so it is closed too much, the only bad
thing that may happen is you will use a small amount of extra fuel.
If you set it so that it is open too much, you can get carbon
monoxide in your house. So if you are going to do this, adjust the
weight so that the flapper is balanced so that it is just closed
during normal operation and only opens a little if there is a strong
wind outside.

Mark