Just walked into a 50 plus year old boiler 300,000btu boiler almost the size of my truck. Are these oil to gas conversion burners still allowable to work on? Or are they finished when they pack it in?
Your're probably working on a Economite.
http://www.midcointernational.com/products/economite_ec/index.htm
As far as I know they are still approved for continued use but not for a new conversion.