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    Hot water cylinder - most optimal heating schedule?

    Hello, Was there any research done to what's the most optimal heating schedule for a hot water cylinder? Is it best to keep it on for few hours a day, or keep it on at all times or any other approach is recommend? What if I go out for a week? Switch it off? How about long weekend? 2 weeks...
  2. C

    NEST 3, ESI and no "Saitisfied" for HW

    Hello, I'm going to replace my ESI controls and thermostats with 2 NESTS. I have 2-zone + HW GCH. I think I've worked everything out and I'm confident that I can get this done myself. On the pictures attached you can see main board and zoom on the wires that I can reuse. They are upside down...
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