Originally Posted By: thejnicki
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http://www.nachi.org/bbsystem/usrimages/H/HPIM1557.JPG ]
http://www.nachi.org/bbsystem/usrimages/H/HPIM1557.JPG ]
Originally Posted By: thejnicki
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By the way this is a slab foundation could not see any connections.
Originally Posted By: escanlan
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There would not be a concern if the demand on the hot water could be serviced by a 1/2" feed from the water heater. The way to tell would be to perform a water-supply fixture unit (w.s.f.u.) calculation using the hot water w.s.f.u. amounts from chapter 29 of the IRC (or also available from the IPC). This calculation can give you a general idea of demand. When doing this calculation you would need to know if the fixture manufacture requires higher w.s.f.u. value for their fixture than is provided in the chart. Reducing the size will also have an affect on final pressure delivery to the fixture.
Also check the local AHJ for requirements on piping size. There may be a uniform size requirement. A good site for this is www.municode.com .
Originally Posted By: jfeig
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Smaller hot side might actually be an advantage from an energy consumption standpoint. Less hot water to cool off between usage and quicker hot water supply from cold situation. Smaller pipe holds less volume and runs at higher velocity flowing.
Originally Posted By: thejnicki
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Good site Emmanuel thanks again…