Re: gravity hot water recirculating loops
Posted by MikeStheplumber on November 15, 2001 at 19:25:59:
In response to Re: gravity hot water recirculating loops
: Gravity hot water recirculating loops. I have seen two applications of one-fourth inch i.d. flexible copper tubing. What is likelyhood of success if applied to a lateral run of 50 feet from first floor sink to basement water heater drain valve(vertical drop about 9 feet)? What is likelyhood of success if applied to a lateral run of 40 feet from second floor sink to basement water heater drain valve (vertical drop about 18 feet)? Would the loop be more successful if 3/8 inch tubing is used? What are the primary concerns in this loop? A gravity recirc. system is really a thermal system.Smaller tubing dosent retain heat as well as larger tubing,so a smaller return line works best.Try insulating your hot water line but dont insulate the return line.This works better than shrinking your pipe size especially on hot water lines that are more prone to plugging up with scale.Good luck Mike




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