looking to use excess solar for my HWS.
i have an evacuated tube hot water system but winter it struggles. Even shitty on bad days in summer.
Getting a 12kw solar system and looking to pump some excess power into heating the tank mainly over winter. But don’t want to fully heat it and then the evacuated tubes sit there doing nothing.
Its a mid element so winter it can basically do as much as it wants as the tubes will heat the lower half but summer i can max out the whole tank to 85 or 90°
The HWS runs on off peak with afternoon boost which appears to do morning afternoon and night to heat the water
and i have 3 phase so not sure how that would work setting something up. would need some sort of 2 way switch to switch from controlled load to solar
would be nice if it could heat the tank to say 70° but the off peak cut in is @ 60°