gravity hot water recirculating loops
Posted by dwp on November 15, 2001 at 14:49:17:
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?


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