We have "Vitocaldens 222-F HAWB-AC 222.A29" heat pump system. In our pursuit to activate "Operating State 3 (use of surplus PV energy)" of the smart grid for this heat pump, we aim to establish a connection between the PV system and the heat pump via relay switching contact. We did come across a mention of achieving a similar outcome through an energy meter. Consequently, I have a few questions: Is it possible to establish the required contact via relay, and if so, could you kindly guide me to the relevant information on this option? If the only available option is through an energy meter, could you clarify whether it must be a Viessmann energy meter or if compatibility exists with other energy meters in the market? Additionally, is it feasible to obtain information about the heat pump's activities, (e.g. Own energy consumption is active), directly from our gateway?
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