Welcome! Here are the website rules, as well as some tips for using this forum.
American Standard Arcoliner Retrofit Information
Anyone out there interested/need American-Standard's published "Installation-Operation and Maintenance Manual" ? It gives a lot of information for Arcoliner residential boilers (circa 1953) and/or their "Inshot" gas conversion burner for same. I was looking for some information on same to check a few things out on my own unit (still in residential service in Orland Park, Illinois area) when I saw some blog 'stuff'/questions about same.
Subsequently, I found above mentioned information in the basement rafters above an above referenced unit. It's still operating as the primary home heating boiler unit).
Let me know....am more than willing to share. In my opinion, it remains a very viable and efficient residential boiler setup--even by today's "standards".