posted 9 years ago
Hey Tim, what did you end up doing about the chimney situation? The chimney for my RMH (double-wall insulated chimney pipe) goes straight up through the ceiling, attic and roof. The greater portion of the chimney is within the envelope of the house. It has a very good natural draft all year round. I believe this is why my RMH doesn't suffer from smoke back issues at all. But I am careful to open a window a little bit when there is an exhaust / vent fan running somewhere in the house, to prevent it from creating a vacuum that would cause the RMH to reverse draft.
Your bench should be noticeably warm, especially after 3 to 4 hours of burning. If not, then it is probably still drying out. Is your exhaust pipe getting warm? Once the mass is completely dry the exhaust pipe exiting the mass should be just warm to the touch after running the stove for a few hours. And when the bench warms up, the stove will draft even better.