Hello, [apologies for my English, but I don't speak German, and this looks like the right place to ask this question] You can use Vitocal 200-G Wärmepumpe for heating. You can add NC-BOX to provide cooling *AND* push heat into the ground in summer You can use SunMaxx PVT-Module to generate electricity AND heat in summer. But you need heat in winter! Can you... use SunMAXX PVT-Module to provide electricity and heat in summer use the Veissmann NC-BOX to cool the PVT-Module, then store the heat in the ground in summer in winter, the ground will be much warmer 20C-30C in winter, the wärmepumpe will start with MUCH WARMER GROUND LOOP, so much more efficient much less energy By cooling the SunMaxx PVT-Module, it produces 10-20% more electricity. In winter, there is low solar electricity, and you don't want to use it all on wärmepumpe. But because the ground loop is high temperature, it uses much less electricity. I see Vitocal 200-G Wärmepumpe can use ground loop up to 25C. This should be enough? [I am not a heat engineer!] I am trying to understand if this is a good design.
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