Barometric Dampner

Do you actually need a barometric dampner when you have a power vent unit?

Yes and no. The PV will run at full all the time (unless you have a rheostat on it), you need some way to regulate the draft on the stove based on temp. As the temp rises, normally you get more draft, the Baro can adjust for differences in air flow.

You should check it with a draft gauge to be sure, if you are staying within the .02-.04 range without changing the the power venter (speed that is), then you really don't need one.

It helps to control the slight variations of draft on the stove.

Leisure Line states right in their manual
"When hooking up your stoker stove, be sure a barometric damper is installed. The possibility of a hopper fire exists if a barometric damper is not used"
That goes for a power venter as well as a chimney. You could put a rheostat on the power venter but I would still install a baro.

Go by what the manual states, they are not that expensive around $25-30 for just the baro and mounting, but if you get the TEE, it can much more.

http://www.patriot-supply.com/products/ ... m.cfm/1940