Thanks for coming back so quickly. Yes Stem's wiring graphic matches my setup wiring so will action as you suggest. Think I will also Isolate & Insulate N&L in case I end up going for a full decommission
I have a Danfloss RX1 currently installed. 4 wires (N & L and 2 and 3) I want to temporary decommission the unit whilst keeping the boiler operating. How can I achieve this?