Hi Folks
I just installed a new Riello RDB 1 replacing a older G5 BF, its in a grant 50-90 Balanced Flue (late 90s, utility model). I am near the end of the air adjustment to achieve figures which are within tolerance e.g 02% 4.7, CO ppm 12, CO2% 12, Flue gas temp 226, excess air 29% and Eff...