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Hi All, Just a quickie.....need to rewire ancient H'well 6060 B room stat to WB 12 wiring centre but unsure as to terminal layout of stat. At present, terminals are numbered 2 1 4 3 from top to bottom. Wires at present are (3 core + earth) earth----2,Red----1,Blue----4, Yellow----3, old...

Hi All, and happy new year! My aged mother's CH system is having problems. Like her, the system is pretty ancient and not functioning too well! It consists of - Potterton C70/21 BE or SB a floor standing gas boiler...