I have a woodburner in my shop. It uses a 6" single wall to 6" class A chimney all vertical. If I were to install a multifuel pellet stove, is the 6" class A acceptable for the flue? Burning whatever biomass I could find sounds fun. Also, it's 14' from floor to ceiling, and 23 feet from the floor to the chimney cap so where do you transition to 6"? At the ceiling support box or at the bottom of the 6" connector pipe?
