I'm new to the forum and could use your help. I have a 5 year old (to the day) Slant Fin boiler (model se70dp). Our old boiler was at least 45 years old. When they replaced it was in bad condition. Service man stated Flu pipe rotting out, leaking at eliminator and relief vavle. Due to safety issues he recommended replacement. We agreed.
New boiler installed everything was working for first two years then roll out switched tripped. Service tech says roll out switch open, boiler sooted up, needs mat (?). He quoted us a crazy high price to clean the sooted boiler. We ended up having a different company clean and replace switch. All was well for two years. Now I have been working in my basement on a project and I had to move the boiler. When I took the hood off I see it is completely full of soot and rust again.
Any suggestions or help please. If the roll out switch goes bad does this mean we are getting CO2 in the house?