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    Replacing my Potterton PRT2 thermostat

    Hi All, I have been reading other similar threads and think I have the gist of what I need to do, but would be most grateful if someone could reassure me before I take the plunge. The PRT2 has 4 terminals: COM, H, TL, and N. The wires are connected Blue to N, Red to TL and Yellow to H. In...
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