We installed an Osburn 2400 insert last week - it puts out a very impressive amount of heat. We are having some difficulty controlling the rate of burn, though. It seems to burn very hot, even with the vent control turned all the way down. There is a some dampening of the fire noticeable when we close the vent all the way, but it still burns through 3 or 4 large logs in about 2 - 3 hours. When we load it up completely at night, we feel that it is over-firing.
We have a 30 feet masonry chimney, in the interior of the house, with a 30 foot insulated SS liner, 6" diameter. The flue diameter is 8 inches.
One additional note: there was already a flat, square stone cap on top of the chimney, set on four little brick columns that extended above the main opening at the top of the chimney. So, we (myself and the chimney sweep who installed everything) did not put an additional cap on the top of the liner. So, the liner is basically open, terminating maybe 6 inches beneath the stone cap. This effectively keeps the rain and weather out, but could this setup be creating an overdraft? (ie. - does the cap on top of the liner restrict the draft somewhat?)
Could the addition of a liner cap solve the potential overdraft? Or, maybe a barometric damper?
Please help! We love this stove, but we need a longer burn ... we are burning very dry, hard woods.
Thanks.
Scott
We have a 30 feet masonry chimney, in the interior of the house, with a 30 foot insulated SS liner, 6" diameter. The flue diameter is 8 inches.
One additional note: there was already a flat, square stone cap on top of the chimney, set on four little brick columns that extended above the main opening at the top of the chimney. So, we (myself and the chimney sweep who installed everything) did not put an additional cap on the top of the liner. So, the liner is basically open, terminating maybe 6 inches beneath the stone cap. This effectively keeps the rain and weather out, but could this setup be creating an overdraft? (ie. - does the cap on top of the liner restrict the draft somewhat?)
Could the addition of a liner cap solve the potential overdraft? Or, maybe a barometric damper?
Please help! We love this stove, but we need a longer burn ... we are burning very dry, hard woods.
Thanks.
Scott