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Aquastat wiring

Robert O'Brien
Robert O'Brien Member Posts: 3,562
R is common,B breaks on temp rise,W makes on temp rise
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Comments

  • Roger_9
    Roger_9 Member Posts: 1
    Aquastat wiring

    Hi
    Can you explain to me what the R,W,& B terminals on an aquastat, or similar device mean, and how do YOU remember them.
    Thanks
    Roger
  • a good way to

    remember them is R is common to both

    B stands for Burner

    W for water (circulator)

    So typically R and B operate the burner and when R to B breaks R to W makes and the circulator comes on.
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