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HTP UFT Combi boiler pipe size/btu output
I purchased a HTP UFT combi floor mount boiler. I'm in the process of figuring out the plumbing and pipe size. It's the 140,000 btu model. In my research I keep coming across that 1" pipe is good for 7.5 GPM and 75,000 BTU. The boiler side inlet and outlet piping is 1". How can it deliver 140,000 btu's through 1" pipe?