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

Alan (California Radiant) Forbes
Member Posts: 3,615
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?


8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hourTwo btu/ per sq ft for degree difference for a slab
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Comments
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Thanks, Dave!
That picture you used at the end of your article is from one of our jobs in Berkeley.8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hourTwo btu/ per sq ft for degree difference for a slab0 -
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?0
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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.8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hourTwo btu/ per sq ft for degree difference for a slab0 -
Thanks for letting me know where that photo came from. It was in a library, I will tag it properly.
EnjoyDave H0 -
That job was for Mr. & Mrs. Pickle.8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hourTwo btu/ per sq ft for degree difference for a slab0
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