- Mar 3, 2024
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- If you're a qualified, trainee, or retired electrician - Which country is it that your work will be / is / was aimed at?
- United Kingdom
- What type of forum member are you?
- DIY or Homeowner (Perhaps seeking pro advice, or an electrician)
Anyone tell me where to connect the two wires that switch the boiler on via the programmer and the 2 wires that call for heat on the ufh control board. Boiler is a grant vortex pro 21 external oil combi condensing. Many thanks.