I am curious as to batch burn times with the new controller. My o2 controlled garn has different burn profile, with 80lbs of dry cordwood it takes approx 1.9hr or 104 minutes equating to .76lbs wood/minute. My controller works a little differently, manually adjustable to shut the inducer off at 200degf., the water was 185degf. What btu/lb value would you use to calculate the output?