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Posted by HeatPro on April 05, 2011 at 14:35:25:
In Reply to: Re: triangle tube boiler and pump posted by HeatPro on April 05, 2011 at 10:51:42:
. I calculate my head loss to be 30; gpm demand 12. My domestic has a maximum gpm of 7, head loss of 25
Whenyou remove the 25 from the situation, as it isn't required due to water seeking it's own level, the resistance is 5 feet of head - a major difference from 30, which explains why Taco 007's would do the job.
They can easily handle 100,000 btuh, or 5 gpm at 5 feet of head, even if the primary loop was 3/4 instead of 1-1/4.
http://www.taco-hvac.com/en/products/Model+007+Cartridge+Circulator/products.html?view=ProdDetail¤t_category=52&Product=10