Adding unvented cylinder to combi?

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  • mtmcgavock
    Automated Home Legend
    • Mar 2017
    • 507

    #16
    Originally posted by kevinsmart View Post
    The installer was indicating a cable needed to run from the zone valve to control the boiler.

    What you describe doesn’t require a cable back to the boiler, I think just wiring the high limit stat in series between the DHW BDR91 output and the DHW zone valve.
    Yeah, that's what I said. A cable back to the zone valve.

    This is obviously dependant where your zone valve is.

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