Baro Damper at bottom

The vendor who sold me my stoker recommended that the barometric damp be at the very bottom of the pipe, where the pipe comes out of the stove.

So the gas would come out the pipe far enough to get by the coal hopper, then a T that would turn the gasses upward, with the damper on the end.

Seems like a good idea, as it would make it easy to clean out fly ash, and keep the pipe cooler.

But the diagram for the damper has arrows pointing at elbows, saying Not Here. I am thinking that the Not Here may be more for wood or oil fired installations, where there are sudden changes in gas pressure.

Anyone have an opinion on if the damper should be installed at the very bottom, using a T instead of an elbow

thank you
Don

xackley wrote:Anyone have an opinion on if the damper should be installed at the very bottom, using a T instead of an elbow

I don't like it, although it is done quite often. The baro manufacturers prefer it in a straight run. I prefer it closer to the chimney myself as I believe it reduces the amount of ash that builds up in the pipe. Field Controls site http://www.fieldcontrols.com/draftcontrol.php#diinstall recommends it being close to the unit if it is forced draft. I'm not sure how well that works with coal though.
I would go with the manufacturer's suggestion and if the ash becomes a problem, just move it to the other elbow at the chimney.

The install diagram for the Field Type RC shows the damper installed on the side of the horizontal pipe exiting from the outlet on the furnace. It could be installed here with the installation kit that comes with the damper. It indicated the damper should not be installed at the point of the first bend to vertical (using a tee instead of an elbow). I assume there is a reason for this, possibly the damper may not operate correctly. I would install it at the next bend (where pipe goes into the chimney) replacing that elbow with a tee.

I don't have a stoker, though. I burn a hand fired stove, that's the way I have it set up.

I do have it installed just inches from the chimney, and by your advice, I will leave it at the top.

BTW, the diagram that comes with the Field RC also say not to put it at the top elbow, too. As I had enough elbows, and a horizontal run for a few feet at the top, I followed their instructions.

Sure wish it would get cold so I could burn some coal.

Thank you

Don

We'll be running those coal burners soon enough!!!