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drzoidberg33

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    drzoidberg33 reacted to JayMc in Solar geyser losing heat at night   
    Just saw that I never posted an update on my installation. I had significant heat loss at night and also installed a NRV. Solved the back feeding problem and was very easy to do.
    Green = geyser at hot outlet side.
    Yellow = solar collector temperature at the inlet side
    Blue = Temperature at the collector on the output side. 
     
    During the night, there appeared to be back feeding of water into the collectors (blue). Once that NRV was installed, that blue line drops over night which means there is no longer a back feeding of hot water into the collectors.
     
     


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