In my 34-yrs commercial building experience (hospitals), hot water circ problem were MOSTLY related to a plumber (accidently) leaving a valve closed, USUALLY at the far end of the run (farthest fixture), on the return line back to the pump. CIRC BASICS: 1) the return line comes from the HW at the farthest fixture back to the pump suction, (pump near the water heater); 2) The pump Discharge PUSHES the cooled DHW back into the COLD water pipe entering the HW Heater. Compared to a standard non-recirc, you will have EXTRA valves at the far fixture for the return line, and two extra valves to valve off the pump, should it develop a leak.
IF YOU HAD WELL PUMP PROBLEMS, my suspicion (IF ALL VALVES OPEN) is that there is a STRAINER in the pump suction that is CLOGGED??. There is also a (possibility?) of pump failure, or pump damage during well pump down time? (I.e. running dry?)
thenne1713@aol.com
Posted by: Terry <thenne1713@aol.com>
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