Bob wrote:[quote="markviii"]Does the ash controller have a differential setting?
Yes and the AHS directions are to set it at 10 degrees. So if the theromgrate is set for 120 the grate switches on when the sensed temperature drops to 110 and switches off when the sensed temperature rises to 120.
If you reduced the differential to 5 degrees, in theory it would ash more often and for shorter periods of time...admitting less fresh coal at once. Might be worth a try...[/quote]
I have experimented a bit with differential but I wasn't successful in resolving the problem.
At the moment--at least until the booms start again--my theory is that keeping the burning level of coal sufficiently high is a more important factor.
But I would be interested to hear if anyone else has experimented with varying the differential and what results were observed.
It would be really great if the AHS rep would join this discussion!