How do I connect a circulator pump to a water heater?
My new water heater has no side tap for a circulator pump. The house is 70+ feet long and the master bath takes several minutes of wasting water to get HOT. I would use a check valve either on the COLD INPUT at the top or put a TEE at the BOTTOM DRAIN COCK. The plumbing forums are all over the map on this one. The pump will be on a timer, with INSULATED 1/2 PEX A (Pro) running back to the master bath, for the circulator loop.
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Two ways to do it.
https://www.askthebuilder.com/hot-water-recirculating-system-installation-tips/
https://www.youtube.com/watch?v=TrsptRZtIzc
https://www.youtube.com/watch?v=KdA_gfau1s4
I had to have my plumber plumb (add) extra pipes to make mine work.
I look forward to reading what others post.