Lightning wrote:SO its gonna give your primary combustion air a path to bypass the coal bed? Hows that gonna pan out later in the burn when ash starts to block air going up thru the grates? Seems it would be much better to have independent control of primary and secondary air.. Am I missing something?McGiever wrote:As was mentioned...same dimensions as a brick...to take ones place in the stove and channel air from below up to top of fire.
Actually, it is a Soft Coal/Wood device...and as you have concluded, not so much of a Hard Coal device.
The Riteways also employed a downdraft exhaust outlet which played a part with the Louvers and gave a secondary burn at low exit point. You would need to study this arrangement to grasp the whole process.