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Many thanks!

Thanks for the reply flameport!, if I understand correctly then… Slide1 by Ben22 posted 29 Dec 2015 at 3:53 PM Thanks, Ben

Hi, I am having difficulty in establishing the correct wiring for attaching a Honeywell BDR91 boiler relay (as part of the Honeywell Y87RF Single Zone Thermostat). I have the instructions for both, but cannot make the correct method (images attached) Grant Vortex 36e (External Oil Combi)...