Question about Grundfos UP10-16B5/ATLC Comfort Series 1/33 HP Recirculator Pump with Sweat
Open following link to view how recirculation system looks:
Ordinarily the cold water line is used to complete recirculation loop.
There is no reason why you cannot run separate line back to water heater instead of using cold water line.
The Grundfos system comes with crossover piece that connects hot-and-cold lines at furthest faucet.
Instead of connecting between hot-and-cold line, simply connect hot to your new hot water return line.
When your new line arrives back at water heater, it must connect to cold water inlet so return water is directed to bottom of water heater.
For critical safety concerns, do not remove TP valve to install new water inlet.
Nor is it best to use extra plug on top of tank to install new water inlet, unless you also install dip tube that directs water to bottom of tank.
In the case of tankless water heater, return line must be connected to cold water inlet also.
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Posted on Mar 14, 2011
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Posted on Jan 02, 2017
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