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Home » Mixing valves, boilers and radiant panels

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Radiant & HydronicsThe Glitch & The Fix

Mixing valves, boilers and radiant panels

January 22, 2012
John Siegenthaler, P.E.
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An installer uses a four-way motorized mixing valve to interface between a conventional gas-fired cast-iron boiler and a low-temperature radiant panel system. That system also includes an indirect water heater. The system is installed using primary/secondary piping as shown. The mixing valve is located close to the boiler.

Can you spot at least four details that are either incorrect, missing, inefficient or unnecessary?

 

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