Re: hot water recirc loop
Posted by hj on January 25, 19100 at 00:04:05:
In response to Re: hot water recirc loop
You cannot circulate the low temperature system, since it requires cold water to reduce the temperature and if there is no flow from the faucet, then there is no cold water injected into the water stream. Therefore, the water temperature will always eventually reach the tank temperature. You can circulate with limited effectiveness by using an aquastat to shut off the circulation when the desired temperature is reached.

: I am looking for a piping diagram for pumped hot water recirculation in a system (water heater),that runs at 160 degrees to supply a coil for forced air heating and includes a tempering valve to limit domestic temperature to 120 degrees. I have tried many scenarios but always end up with recirc temperatures equalling tank temperature (way too hot!). Any ideas ?




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