I'm aware that 7 inches of water column is pretty much a standard for in coming gas pressure but do we at any point need to add up btus to make sure the incoming wc pressure is sufficient to cover all appliances or btus has nothing to do with it? I was under the impression that 7 inches of water column covers 425000 btus.
Gas Pressure
- Thread starter Nanmer
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Breplum
Licensed plumbing contractor
Seven inches water column for natural gas can supply infinite BTUs as long as the pipe is big enough in diameter and length is factored in from the industry code charts. 10 ft. of 4" pipe get you about 23,000 CFH (and then depending what your local btu per cu.ft., calc the btus).
Of course, when lots of capacity is needed, we often utilize higher pressure for high capacity and long distances.
In residential, the code dictates exactly the method to factor in load and distance on sizing.
Of course, when lots of capacity is needed, we often utilize higher pressure for high capacity and long distances.
In residential, the code dictates exactly the method to factor in load and distance on sizing.
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