Click here to Find a Contractor in your area.
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/.

primary/secondary pumps (how to wire the primary pump)

Dan_15Dan_15 Member Posts: 388
I'm setting up a boiler with primary/ secondary piping. 3 zones. 2 radiant and an indirect. My question is how do i wire the circ on the primary loop to run whenever any of the secondary pumps come on? I'm using a taco sr504 expandible 4 zone switching relay with priority (If i can).

Comments

  • hydronicsmikehydronicsmike Member Posts: 855
    X-X End Switch

    Could use the X-X End Switch on the 504 to run this pump. If you also need a dry-contact close for your boiler, then you could have a DPDT Relay energized by the X-X terminals on 504. one N/O contact is used to switch power to the pump and the other can provide a call for heat to a boiler or reset control.

    Hope this helps. If not, call the guys at TACO, they are great!!

    Mike
  • carol_3carol_3 Member Posts: 397


    thanks, hydronicsmike
This discussion has been closed.

Welcome

It looks like you're new here. If you want to get involved, click one of these buttons!