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    Dual stat and 2 port valve on Y-plan system

    Thanks Gas4 just confirms my suspicions. Found out now the installer only Corgi qualified and not G3. Is there a register of G3 qualified plumbers anywhere? I'm based in the North West and now need to find someone to correct this. Anyone know a qualified G3 working the NW ? Cheers.
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    Dual stat and 2 port valve on Y-plan system

    I have a new unvented cylinder installed and have just reviewed the work of the installer. It appears that electrics to the 2 port valve driven by the high limit side of the dual cylinder stat has not been connected and hence the 2-port valve will always remain in an open position. Is my...
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