mastiffdude wrote:Ok i see .The top of the back pipe is closed off.And there is some kind of damper inside that closed pipe.Could i use mine with the back pipe closed at top and add a 6" round receiver plate at back without having that damper setup? in
The purpose of the indirect back pipe is to make a longer path for the exhaust gasses to follow before they are lost up the chimney forever. This gives the stove a whole lot of extra heating surface area as well as allowing more time for the exhaust to give up its heat into the room. It also allows for a greater control over the rate of burn as well because when the stove is set in indirect draft, it slows down the draft overall.
It works like this, when the damper is open the smoke just goes out of the stove then up the chimney like every other direct draft stove. When the damper is set to indirect draft, it sends the draft downward to the bottom of the pipe where it makes a U turn and then travels back up to exit at the top. The back pipe is really two pipes in one. There is a metal divider inside the pipe that splits the pipe into two sections to create the long smoke path.
call Emery at Antique Stove Hospital. Google, "Antique Stove Hospital," and you can find his web-site. He probably has or can have the parts made to put the back pipe back into its original condition. It is worth the extra effort to do this.