CIF module/BMS

What happens to the BMS (building management system) settings when reverting to factory settings?

If a CIF module is connected, the selection options for the factory setting are adjusted.
You can choose between: “factory settings (BMS retained)” and “complete factory settings”.

Does the temperature sensor have to be connected to the pump or can the sensor also be integrated directly into the BMS?

A temperature sensor, e.g. the return temperature sensor, can also be connected directly to the BMS. If the pump is also connected to the BMS via a CIF module, this signal is also transmitted to the pump.
This means that the heat quantity and the temperature of an on-site return sensor can be read both at the pump and via the BMS.