EarthWindandFire wrote:I was just drawing up a schematic on the best method to integrate a Leisure Line Pioneer or Pocono into my existing furnace duct work. My current plan is to not run my oil furnace at all this winter and install a coal stove next to the oil furnace in the basement and tie into the existing heating ducts using the 12" duct top.
Depending upon your location and fire insurance and if the National Fire Code is enforced you may need fire dampers if the ducts penetrate any floor. I ran into this when I had mine inspected. Only listed devices (hot air with ducts) with a 165F (thank that's the number) automatic shut down. Coal stoves have no such limit. This is somewhat absurd IF the room with the stove is also tied into the furnace (conditioned space). One can't duct without fire dampers but can have open stairwells! This part of the code is not written for private homes but does not exempt them.
Also, your main furnace will not like any reverse pressure. I want the central system ready for backup. Avoiding heat being wasted in the return ducts is an issue as well. Zoning most central systems is also problem. Only $$$ variable output furnaces zone well. Altering anything that can change furnace pressures too much can interfere with it and easily violate the National Fire code. (An airflow restriction in the code)
I've decided to install a separate distribution system (with fire dampers). I've been trying to find a high velocity air mover so I can use very small ducts. I haven't found one yet, all I have found seem to be built into a high velocity central unit.
A big time problem, getting it to work and not voiding your fire insurance! Thus I'm doing a 2nd distribution system. The only thing that will make my inspector happy and thus my fire insurance valid.
I'd sure like to be able to use min-ducts, just need to find an air mover!