Hi all, Could somebody please help me understand the following diagrams on wiring my new room stat into my boiler. Boiler - Vaillant Turbomax Pro 24e Stat - Honeywell CMT927 Wireless Boiler wiring: Page 17 of the following PDF link http://neighbourconstructions.co.uk/...stallation.pdf Stat wiring: Page 7 of the following PDF link http://www.plumbnation.co.uk/site/ho...cification.pdf Currently the boiler has a loop wire in pin 3 + 4 for the plug in vaillant timer. I know i havre to take this out. T1 and T2 are pin 3 and 4? Assuming looking at page 18 of the vaillant PDF I dont know what that 10a fuse is for and where the diagram goes off too towards the left. Boiler is currently hooked up to the mains supply via a fused spur. The reciever unit is powered off a switched live. My friend is confident he can do it as he is fairly competant with doing electrics but i want to clarify 100% what goes where first as he doesnt want to go ahead for deffo and turn the boiler back on with a bang before we are 100% certain what goes where. Thanks in advance.