How do you size a circulator pump?

nugs

Here's another great resource for you. download the software there.

www.taco-hvac.com

It's free, it's amazing, it works

Paul MacDougall

How do you size a circulator pump?

I have read books, articles, chicken scratch from guys at the supply house, discussed in length with my Dad, but I cannot seem to grasp how to size a circulator?

Heather_5

Where does your

..confusion lie? What part of the process has you perplexed??

Supply House Rick

Here's Dan's answer

http://www.masterplumbers.com/plumbviews/2006/how_to_size_circulators2.asp

MikeyB

pumps

Also check out, B&G'S "Zoning Made Easy" and Taco's Radiant made easy application Guides, TD09 "Understanding Pump Curves" and TD10 "Selecting Circulators" I dont have a scanner to attatch these documents, just google them and they should come up

Paul MacDougall

Thanks guys. I will look into that material tonight. I think we have most of that Taco info at the shop. I have been trying to setup a basic pump sizing scenario to practice with, but the gpm, flow, head, and btus gets lost in translation from the page i'm reading it from to the worksheet i'm doing the math on.

S Ebels_2

What type of application

Are you sizing a zone pump or a system pump?

In a nut shell. You have to know the btu load on the circuit or system. From that you can determine how many gpm you need to supply it. After finding the gpm you can look at the piping in the system or zone and determine the head loss. From there it's just a matter of selecting a circ that will do the gpm @ the developed head.

Steamhead (in transit)

Another thing to consider

is whether you're pumping into an old gravity system. It's way too easy to over-pump these. Go here for more:

http://www.heatinghelp.com/newsletter.cfm?Id=125

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