How do you pipe a hot recirculation line?

Answer 1

Remove the boiler drain at the bottom of the water heater,and install a tee with the branch facing up. Replace the boiler drain! Above the tee is where you put the approved for pottable water pump,with the arrow pointing toward the tee.(you can put a shut off above and below the pump for servicing)From the top of the pump you now run a line to the farthest fixture,of a conventional water line system, and tee into the hot before any shutoff or fixture.(insulating the hot water lines would definitely save energy)If you are trying this on a home run (or header)system, you will have to run a separate line back from every fixture to an other header,and then to the top of the pump. P.S. Be sure you label the shut offs to make sure no one closes them when the pump is in operation.