The manual for my boilers Aquastat (L7248C) claims that it is outdoor reset ready, all I need is their special "Outdoor Reset Module", Honeywell part # 50022037-002/U.
Now I am pretty good at internet searches, but this one has left me stumped. I can't find this exact part number anywhere! I find plenty of the -001 version as well as the similar DHW module, but not this one.
Any of you combustion experts know if this is a special order item or perhaps discontinued/replaced?
Honneywell lists them on their site and you can get one at a supply house