Negative pressure smoke issue

[Slate Dale]

torch doesn't work as good....Try preheating the chimney with a space heater or heat gun. 10-15 min. then start with kindlin only and not wood logs ...then use the logs after its going good. if that doesn't work at least you will know its the house or the chimney and not operator issue. clean out ash before heater or point heat gun up. Also use a fire starter that helps too...

The problem with the isolate column of air in modern insulated steel venting is that it doesn't retain any heat like a masonry chimney would after hours or days of burning, so every time the stove cools off there is a danger that this could happen. I guess I was very fortunate it didn't happen before in the few times that I used the insert.