north of 60 said:The flue gases with the BK will be at 250F or less once the load settles down for 85% of the burn on med to low settings. The Idea is to keep the heat in the stove when properly operating. This is why the attempt is to go double wall to maintain minimum flue temp as there is all that is left. 212F at atmosphere assuming your at sea level. At higher elevations it takes a lower temp to maintain a none condensing flue gas. Remember it takes less heat to boil water at a higher elevation.
250 internal flue gas temp? Or is that temp on the external pipe? I can see why they push that double wall pipe and 36" rise. My internal temps are double that.