Adam can work with multiple zones. So there can be several zone temperatures set. Elga's scheme can't handle this. For example, if the highest zone temperature is requested from the Elga, the amount of heat required may differ each time at the same room temperature required, because it may concern 1 zone or several zones. For Adam, therefore, dip switch B2 (weather dependent) must be set to 'On'. With this Adam can now regulate to the required water temperature and thus request the correct amount of heat (depending on the demand of the zones).
Because Adam regulates to the required water temperature, you cannot set a heating curve. The requested water temperature depends on the heat requirement of all rooms and the outside temperature.