35c

  1. A

    glow worm 35c boiler with a honeywell bdr91 smart wireless thermostat

    hi there, I currently have a glow worm 35c boiler in my home, i'm trying to fit a BDR91 thermostat. the wiring diagrams aren't the clearest in the world. can someone help please? I have read loads of threads about the Wiring. do I have a new power source to the thermostat? my boiler has...
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