About a year ago I moved into our family's home that was built in 1821 and began renovating... I own a small renovation business and I've been able to consistently bring resources to it by the grace of God but I noticed the old heater but never did anything with it. This winter we have a pretty cold one and was going to look up the model at least and I can't find anything on it. On the tag it says Su400 model and super flame on the front. Will be home later and can post more pictures if needed but is there any way anyone can help me with identifying this thing? I surely would appreciate it