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Pressure Relief Valve discharge

hambone8780 | Posted in Building Code Questions on

Hi Folks – Any suggestions on how to route the discharge of a PRV in new construction under UPC 2015 in Washington? This will be for the hydronic radiant flooring system. I’m having trouble turning the code requirements into, “what is typically done.”

This is on the first floor of a building with a crawlspace. A floor drain will require an automate primer, and it’s a vacation place, so I’d probably need a timer based system. Running pipe out the side of the rim boards seems like the simplest thing to do, but won’t that kill my building tightness with the air gap?

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