circulator sizing

grindog

I am repiping a boiler and there is a 40 gallon super store running off of it, There is a zone valve running it now and i am switching to circulators and flow checks, what circ is best for the super store a taco 007 or a 0010

Steamhead

How much flow

does the SS need? What pipe size is used?

The Phase 3 40-gallon indirects we use work great with a 007.

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

m_3

0010

A 007 usually works well, but to get as advertised ratings a 0010 is required, with 1" piping. However, depending on the home owners' usage, they may not notice the difference between the two circs.

kevin coppinger_4

That's why....

I really prefer the Grundfos 15-58. kpc

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

bill clinton_3

Check the pump curves:

My catalog says the 45 gallon superstor needs 10 gpm @ 7.9 ft of head to get full output. Add in the pressure drop for other components such as that zone valve, other valves, piping, boiler, etc and you probably need about 12 feet of head at 10 gpm. At that flow rate, the 0010 will only give you 8--9 feet of head: The 007 will give you 7 feet.


So neither pump will give you the recommended volume, but you probably can do ok with the 0010. An 0012 or 0014 would be right in there.

Bill