get-r-done-idaho t1_iww6vjn wrote on November 18, 2022 at 8:31 PM

Do you have softened water? Hard water will build scale in the unit. You will need the normal operating presser and make sure to leave room for expansion. I normally work with steam boilers but they are similar. It would be best to get a professional.

chunderilla OP t1_iwwbfb1 wrote on November 18, 2022 at 9:02 PM

Yeah this is my biggest concern right now with just using tap water because we have pretty hard water. We had a company redo all of the radiators in the house this summer and they said that they bled the entire system and refilled it, but I wasn’t around for all of that and I wish I knew what they did because I have no idea how they did it or if they brought their own water for the system.