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  1. B

    upgrade heating controls

    Cheers Upgrades complete thanks very much. Ken
  2. B

    upgrade heating controls

    The wires go into x4 brown into 1 black into 2 says room stat under. Cheers Ken
  3. B

    upgrade heating controls

    cheers Sorry it was into terminal 3 on the randal and the brown wire is into terminal 1 and black into terminal 3 at the boiler Ken
  4. B

    upgrade heating controls

    Hi i have a old worcester 240 BF boiler that is controled by an Randall 103 clock no room thermostat. I am looking to install a honeywell cm921 wireless room statand timer. On taking the 103 off it is wired up from fuse plug to clock with L- 6 N- 5 e- e then from boiler to clock it has 1...
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