Thanks. I noticed that the listed efficiency difference is about 2%
between something like the Burnham V8 and 3 pass like the Burnham MPO.
Is that the only difference in terms of efficiency, or does that figure
not tell the whole story. Sorry to beat a dead horse, I'm just trying
to determine how significant a difference there is between a pin type
and 3 pass boiler. It doesn't really seem like that much. Sorry to
beat a dead horse.