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diymostthings
My son has a heat store with primary pumped boiler circuit to heat the store with a second pump serving the CH, controlled by the room stat. DHW is via an internal coil in the store, fed from the mains with a blender valve at the outlet. The problem is that although the store water heats up fine, and the CH works fine, the DHW will only give an initial "slug" of hot water after a period of non use, followed by a flow of at best mildly lukewarm water. I am almost certain the problem is a scaled up coil and/or blender valve.
Question: Is it feasible to just descale the coil (e.g. using citric acid or Kilrock or the like? I could make up a simple bit of kit to just circulate this solution around the coil until free from scale.
Any comments or advice (particularly on what de-scaler chemical to use) gratefully received!
diymostthings
Question: Is it feasible to just descale the coil (e.g. using citric acid or Kilrock or the like? I could make up a simple bit of kit to just circulate this solution around the coil until free from scale.
Any comments or advice (particularly on what de-scaler chemical to use) gratefully received!
diymostthings