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Vaillant 831 - D2 setting

Discussion in 'Plumbing and Central Heating' started by Ian Clarke, 18 Jan 2021.

  1. Ian Clarke

    Ian Clarke

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    hi, can someone explain to me what the D2 setting should be set too, range from 2 to 60. Seen a graph but doesn't help as have a modulating VCF350 controller.
     
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  3. rbranco

    rbranco

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  4. ScottishGasMan

    ScottishGasMan

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    It's the Anti cycle time, how long it stays off for once its reached its maximum flow temperature. Theirs no need to alter it from the default 20. The actual time in anti cycle more will vary its self depending on what the set max flow temp is, which in your case will vary on its own if you have a 350 on analouge
     
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