Hallo Manfred I don't know how your system was developed I think the Vitotronic 200-H is there to control the mixed circuit I see this in the draw, but I don't understand why Do you want to start the heat pump with external controls? You will need qualified technical staff to code the HP I can't help you with that Ok! this is what I see on the manuals, in Italian When the contact X2.1-40 is closed the HP is in DHW only The code to enable this digital input is "c67" When the pump of mixed circuit is on, you must open X2.1-40 Now the HP start with first set point now you can see "SetH" and than you can change this value as seen yesterday When the pump of direct circuit is on, you must open X2.1-40 and closed X2.1-60 The first set point is now correct of "ES16" value, i don't know the factory value but you can see the really set point. Press two time SET and read "SEtr" You should see a different value of "SEtH" Remember the value of set point is read on the return of HP! good luck jo-jo
... Mehr anzeigen
