sizing pipe

Bob_36

I know that 1/2" pipe will supply up to 15k at a 20deg. delta T. I want to know if it makes a differance if I hook up ci rads. The rads will supply from 6k to 11k btu/h. Each will be a home run back to a manifold. Will I get enough flow through the rads or should I use 3/4" instead. Thanks for any input anyone may have.

Alan(CaliforniaRadiant)Forbes

½\"

sounds fine. Are you going to use copper tubing or PEX; either one should work fine.

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"

Bob_36

I plan on using pex. If I can use either 1/2" or 5/8", I'll have more flexabilaty as far as manifolds are considered. Also,when I size the circ. for head loss, do I just consider the longest run or do I add all the runs that hook up to the manifold?

Don Robertson

longest run for head loss