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 Circulator

Dave Yates (PAH)
Dave Yates (PAH) Member Posts: 2,162
add up any head losses for the flow rate in the piping highway while on the way to the manifolds and then check the manufacturer's chart for the PAP to see what a single loop (the longest one) head loss will be (don't forget to divide the zone's flow rate by the number of loops and find the spot where that flow rate meets the design delivery temp on their chart for the PAP). Add the highway to the loop and then go to Taco's chart and pump curve's for the best match. Pick the one closest to (but not under) the head losses. That way, you'll do the work required with the least energy consumption.

<A HREF="http://www.heatinghelp.com/getListed.cfm?id=98&Step=30">To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"</A>


  • Billy March
    Billy March Member Posts: 43
    what size taco pump ???

    I am installing a weil-mclain ultra that came supplied with a taco 0014 circulator. As per manufacturers specs, I am using that pump on my primary loop. What size taco pump should I use on my secondary loop. I have 2 manifolds supplying the 1/2" pex-al-pex tubing.One manifold on the 2nd floor is piped in 1" copper supply and return about 30ft total lenth from the boiler room. That manifold supplies 8 radiant loops each consisting of about 225 ft. The second manifold located in the basement is piped in 1" copper supply and return and is about 10ft from the boiler. That manifold supplies 10 radiant loops each consisting of no more that 230ft each. My primary and secondary circuits are both piped in 1 1/4 pipe. Do you think I should use the taco 0012 HV?? Any suggestions would be greatly appreciated!!
This discussion has been closed.