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inefficient re-circulation line
I recently purchased a 5plex and have been trying to make its systems more efficient. I noticed the hot water re-circulation line was constantly running and im pretty sure it's not insulated. It has a Taco 006 pump which is constantly on, this all by itself would be bad but it is pulling its heat from a electric hot water heater which has been turned into a indirect hot water heater through a tankless hot water line going through the boiler which makes it really bad for my heat system. Constantly running water through building and cooling it off, i would think this would be lowering my boiler temps a lot and causing it to run constantly.
Ive thought about some setups that other people are using involving a aquastat and a timer but unfortunately my tenants keep odd schedules so timer wouldnt work and aquastat prob couldnt be set low enough to cause the pump to shutoff.
Installing motion sensors that would turn the pump on and off in bathrooms and kitchens isnt really a possibility given the amount i would need and would be a pain to setup.
My boss suggested reducing flow on line to a small stream just enough to circulate water but i think in the end i will be just circulating a small stream of cold water.?
I did find a Taco 006IQ pump which pulses for 7 days and learns the weekly the schedule of the water usage and only turns on durring those times, constantly going back to pulse mode for one week and then back to scheduled system for the next. Seems my best bet so far. But i cant seem to find any reviews of this product or of its existence on any other website besides TACO-HVAC.
Any Body know anything about this product or maybe suggest alternative routes i can follow?
Thanks for your help
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