After a heat loss is done, which BTU output rating is used? I have seen conflicting info on different websites, even from Weil-Mcclain themselves. Various people claim to use the I=B=R Rating others claim to use the DOE Rating, including Weil themselves.
CGI - 6 Weil Boiler Specs Input - 167 MBH DOE Heating Capacity - 140 MBH Net I=B=R Water rating - 122 MBH If you us the IBR its an almost 20,000 btu difference, so which is correct???