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  1. C

    Adding multiway switching to a boiler ...

    Just moved into and old house and trying to get the CH and HW bill under control. The CH and HW run on two separately pumped zones but re-combine into one at the boiler for heating. Current programmer has HW on as a constant default, with the option to have CH on in addition. So the HW needs...
  2. C

    Separating zones on a single channel system boiler ...

    Just moved into and old house and trying to get the CH and HW bill under control. The CH and HW run on two separately pumped zones but re-combine into one at the boiler for heating. Current programmer has HW on as a constant default, with the option to have CH on in addition. So the HW needs...
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