April 6, 2015
It is "this is how you do it". The IRC doesn't require hot water recirc. The IPC does where the fixtures are at some distance-See IPC Section 607.
December 31, 1969
IECC 2105 R403.5
Should I read this as recirculation systems are required? (in any size residential system)
Should I read it as - If you have recirculation - this is how to do it?
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