Hallo Herr Schneider, I have a VITOCALL 200S system and a Fronius GEN 24 Inverter. And I have this small connection schema from Fronius : Can you advise which connectors represent the "K4" and "K3" boxes (circled on the picture below) on the Viessmann connection board ? Perhaps the : 216.1 (B) or 216.4 (A) ? And if so does this mean , I only have to connection a small wire between the relaix and and the Viessmann board ? Like in the attached schema ?
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