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SO, at present im on a y plan, am i right in thinking, with an unvented a cylinder, it would be best to change over to an s plan, with the two valves close to the boiler? And if so, do i require an extra 5 or 6 core wire to link up new valves,??Lost how mate? A new boiler and unvented cylinder with the boiler wired to a external weather sensor , I've recommended a water softener above . Kop
If the y plan stays, i assume the new valve just goes near the cylinder somewhere and gets wired to the control centre....
Just want to try and do half a job! But do it right once!
New boiler is a bit costly at present...