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yard hydrant on roof

John Dirks Jr

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I see them occasionally.  They're made specifically for commercial roof installation.  Idon't think there's a requirement, unless maybe something local. 

It's handy to be able to clean the economizer screens and coils without having to leave the roof (and for techs to cool off fixing the AC in 100°).

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30 minutes ago, adair said:

all i can add is should be protected from freezing

Roof hydrants, just like yard hydrants are specifically designed to be frost proof as they provide for year round water use. 

"and signage is code required for nonpotable"

I really can't think of a reason that I would assume non-potable water would be conveyed to this hydrant.

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