Radiant floor heating pump calculator

johnwalcott

Is there a website where I can plug in my radiant floor information ( pex tubing loops, manifold and supply? return piping) and find out what circulation pump I should be using.

hot_rod

Two steps
Determine the loop pressure drop, Most all of the radiant tube manufacturers have those charts online. For instance 1/2 Pex, 300’ long what is the pressure drop

Then the pressure drop in the boiler and piping

How many btu or gpm?

Next use pump curves to select the circulator based in the gpm and head required. A heat load calc gives you the btu load requirement.

EdTheHeaterMan

Here is the best information available for a non-engineer to answer your question.

http://media.blueridgecompany.com/documents/ZoningMadeEasy.pdf

I went to a seminar in the late 1970s to better understand how to answer your exact question. At that time, I did not even know that I needed to know how to answer the question. i went to the same seminar each year for 3 years (@$125.00 per) and each year I learned a little bit more.

In the 1990s I went to @DanHolohan seminars whenever I could. And then I got to be good at answering your question. So you need to study the booklet more than once to get the answer. Or you will need to find the expert in your area who can give you the right answer. The local plumbing & heating supply house can guide you to the correct professional.

it all depends on how soon you need the answer.

Are you Designing or Trouble shooting an existing?

DanHolohan

Thanks, @EdTheHeaterMan I wrote that Zoning Made Easy booklet years ago. I was at a meeting at B&G's place in Morton Grove, Illinois where I submitted the draft of the booklet. An engineer there read it over and then told me that my writing style made him want to vomit. It offended him as an engineer. I explained that I hadn't written it for him.

They paid me. It's a lovely memory. ;-)

johnwalcott

Thank everyone for the help. Looks like I have some research to do.

SuperTech

> @DanHolohan said:
> Thanks, @EdTheHeaterMan I wrote that Zoning Made Easy booklet years ago. I was at a meeting at B&G's place in Morton Grove, Illinois where I submitted the draft of the booklet. An engineer there read it over and then told me that my writing style made him want to vomit. It offended him as an engineer. I explained that I hadn't written it for him.
>
> They paid me. It's a lovely memory. ;-)

This made me smile and laugh. I needed that!

DanHolohan

😂👍