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I need some help.
In my area of the country, there are very few steam systems and almost all of them are one-pipe basic steam systems. However, I was asked to replace a customer's steam boiler today and when I went to assess the job, I found a strange box near the boiler. It is a Hoffman boiler return trap. Along with this I also found a float vent/air eliminator. The rads are two pipe with the Hoffman #17a trap.
Am I looking at a vapor/vacuum system, and if so, should I not attempt to replace the boiler as I may be 'married' to a lot of problems in the future?
Let me know what your opinions are. Thanks Curt