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Sure.... although there are a lot of wires so its not easy to view which is why i tried to draw it out. If there is a specific wire that needs to be double checked and mapped let me know and i can re-check. Thanks!

Great, thanks for quick reply. So down to this: Last question re the thermostat. From this diagram can you determine which is the thermostat without tracing it? I see a mention from Stem re removing it. Challenge i have is it has been placed into the roof void during replastering and can no...

Thanks both! Massive help. I have remapped the wiring to the Honey well as below and included T1, T2 & T3 as Terminal Blocks. What i am still not clear on is the blue wires to the three connections on the left. What are these and where do i need to connect these? Space is not an issue as on...

Hi All, done some reading on older threads on similar subjects but wanted to sense check before i start on mine. Currently have a Potterton EP2000 running in a Y-Plan (i think) and want to swap with Honeywell T6R-HW. I have mapped the existing wiring as below: The Potterton wiring guide is...