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  1. M

    Upgrade from Randall 102 timer to Drayton Lifestyle

    Hi, i would like to know please if all I need to do is add just one additional connection from HW off - 4 on the Drayton backplate to join the Grey from the 3 port valve to the 2 on the cylinder stat. Ours is a single story bungalow and the system is a Y plan fully pumped with mid position...
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