Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Taco Switching Relay

MechTech_2
MechTech_2 Member Posts: 84
in Thermostats and Controls
Can I apply 24VAC across the R & W terminals on the t-stat input connections as a demand?

Comments

  • Tim McElwain
    Tim McElwain Member Posts: 4,641
    No if you do you

    will burn out the transformer in the relay. The connections to R and W have to be dry contacts such as thermostat, aquastat, or end switch on a zone valve.
  • Empire_2
    Empire_2 Member Posts: 2,340
    Dry contacts...

    Tim, I think he means to jump out the terminals.  No, do not apply 24 vac, yes jump out or dry contacts like in your t-stat.  Board provides it own power so do not ad any other t-former.





    Peace



    Mike T.
This discussion has been closed.

Categories