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    Vaillant Ecotec Pro 28 & Drayton Wiser thermostat kit 1

    Thanks Ian. I'll do some testing on the issue that I posted, and i'll report back.
  2. V

    Vaillant Ecotec Pro 28 & Drayton Wiser thermostat kit 1

    Hi All, I would like to replace a Honeywell room thermostat with a Drayton Wiser (I'll also be replacing the radiator valves later). Can I just confirm that: N & L stay the same 2nd L to A loop in the Honeywell should now be L to 1 in the Drayton 2 in the Drayton stays empty B in the Honeywell...
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