X-Pump Block with an "on demand" water heater

Alan (California Radiant) Forbes

Has anyone ever had to add a pump to the on-board Taco 008 to overcome the high pressure drop of the "on-demand" HX?

Dave H_2

It should be enough, but then there is always, it depends........

I wrote a blog several years ago about this, take a look here

Dave H.

Alan (California Radiant) Forbes

Thanks, Dave!

That picture you used at the end of your article is from one of our jobs in Berkeley.

ScottSecor

We've used the X block numerous times with very positive results, never needed an additional pump. Its been a few years since we installed one but I'm pretty sure the specs were pretty clear with regard to head and gpm. What are you heating with the X block?

Alan (California Radiant) Forbes

We're using Ecowarm panels to heat about 700 []. You can see them in the photo.

This is the first time we've used Ecowarm. I like the product because it's plywood (3/4") and uses 1/2" PEX.

Dave H_2

Thanks for letting me know where that photo came from. It was in a library, I will tag it properly.

Enjoy

Alan (California Radiant) Forbes

That job was for Mr. & Mrs. Pickle.