I'm about to empty my central heating system. I have a Worcester Bosch
28CDi or 35CDi II combi, Is this an indirect system. Assuming the answer is yes which inhibitor should i user the Sentinel X100 or (Screw fix own brand) No Nonsense inhibitor?
It's probably neither a direct or indirect system, (unless you have a HW storage cylinder which is not likely).
See the Sealed CH system for the whole story. X100 will comply with the manufacturers instructions, S/fix is /probably/ the same stuff, but then you get no guarantees.
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