Yanche wrote:It would be interesting to gather members data on their ash thickness, fire thickness and unburnt coal thickness. The only way I could think of making these measurements would to to poke a coat hanger wire in from the inspection port down to the grate. Let it there a while and then pull it out. The cherry red would be the burning coal thickness, below it the ash thickness and above the raw coal. Any thoughts if this kind of data would be useful for comparison purposes?
I think data would be useful, particularly if correlated with puff back experience, and Yanche's proposal would provide a signifcant amount of data.
Question to Yanche--have you tried your proposed method? How long does the wire need to be in the burn pot? Is it easy to distinguish the three levels?
I wonder if there is a way to "calibrate" direct observation data of what is seen through the view port and whether this might provide comparable data that would be easier to collect. For example--does any one see ash when looking in the view port? If no ash is visible is buring coal visable? If burning coal is visible is it visible all the time or only shortly after the forced draft blower has run?
My answers to the direct observation question is I definitely see burning coal after the forced draft has run but it is no longer visible after a substantial period of inactivity. I don't see ash. I haven't had a puff back this year since setting the grate control SV at 120.
Observations such as the suggested ones, if correlated with puff back experience might lead to guidlines, in addition to those available in the AHS and AA manuals, as to proper adjustment of the ashing control.