Circ pump sizing with monoflow tees

BoilerGuy

I am working on repiping a boiler room that was originally set up with zone pumps on a mono flow system, I plan to go with 1 pump for 6 of the loops. Each loop has 5 convectors conected to it, each loop is is 1 inch copper not longer than 120 feet and the convectors are no more than 30 feet of  1/2 copper pipe total off the main.. the heat loss will be less than 20k per loop. I was planing a grundfoss 26-64. will this be enough GPM, I have limited monoflow experence and dont want to learn the hard way.

Unknown

pump sizing with monoflow tees

I would start small,, a 15-58 can move alot of water, and once up & running the likelihood of all zones calling at the same time is pretty slim.

Most of us have a 15-58 in the truck,,, changing to larger(if needed) is not really a big-deal.



PS- Don`t forget a PD valve though!  :-)



Even better yet,,,, if the 15-58 works how about the Alpha or Eco?,,,, no PD valve needed for these.