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RA890A Circulator Relay SPST

Jake0450 Member Posts: 2
Is there any way to wire 2 RA89A Cir relays (they have no XX) to control the burner (gas) switch together? With out adding a separate relay on each control? If they are in series with the TT won't the current from the 2 separate transformers buck each other? Thanks for your input. Jake


  • Empire_2
    Empire_2 Member Posts: 2,343
    Not sure if I read you.

    Are you trying to energise 2 RA890 controls off 1 or 2 t-satats?  If its off 2 stats, as long as the contacts are dry, its ok.  If you are using T-87f or similar with heat anticipators, it is not recommended.  Your 2 controllers together wired in parallel and phased properly will increase your va only.  I guess I need more detailed info.  you said XX is not on the controller.  Is that both, just 1 etc...  Be more descriptive if possible.


    Mike T.
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