Originally posted by filbert
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It is a shame the boiler does not display the return temperature but I can guess it is low when I see the boiler has dropped the flow temperature to 34c! It will start off at the set 70c but once the house or zone is up to temperature the Evohome system and Opentherm regulate it downward to what is needed. That is my understanding but I stand to be corrected on that!
Best advice as always is, set up your schedules, desired flow temperature. DMW temperature, CH boiler output (the lowest you can set it to) and forget it all. I had to learn many years ago to stop playing. During the summer I don’t switch off the CH but drop the set temperatures in zones to 18 or 19 but usually the natural temperature is above that because of the summer conditions.
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