Personally I would say replace the existing piping. Being that it is buried and going from a system with one type of oil to a system with a much different type of oil could cause problems in the future. Have contractor run new, clean ACR piping above ground if possible. More cost up front but...
I cannot clarify for you, but in my situation the building is only about 20' tall and I believe the expansion tank DOES have a bladder. The expansion tank is situated at ground level.
Hey guys, I am new to the site and I am NOT a mechanical engineer (hopefully I am not violating any rules) but I would like to become one eventually. I currently work for a large HVAC mfgr. on the service end. Let me start by saying that hydronics are not my strong suit. I came upon a chilled...
