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Old 04-15-15, 09:25 PM   #2
AC_Hacker
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Quote:
Originally Posted by nexsuperne View Post
...I have a 300 litre 30 tube solar water heater on my roof, which circulates the water through the indirect coil on my 200 litre thermal store.
Do they make a mixer valve that will work out whether the solar water heater water is hot enough and use this directly, or if it isn't quite hot enough, then use some heat from the internal thermal store?

This way I don't need to circulate the water from the solar, as I can use it directly...
It sounds to me that you are looking for a "Differential Thermostat" that can control a valve.

There are commercial versions HERE.

And if you search HERE you will see DIY projects that were done here on EcoRenovator.

Best,

-AC
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