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1604 Circulating Hot Water System - Water Heaters - Conventional Tank Type - Image Text: Cross section > foundation wall > main shut off valve > gas > gas water heater > cold > hot > check valve > hot water recirculating loop > aquastat > return > Hot water recirculating pump > hot > cold > floor framing > the pump may run continuously or may come on when the aquastat senses a water temperature in the return pipe of less than 110 degrees Fahrenheit (for example) > basement |
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