Is Dualsun compatible with the BOSCH Compress 4000 or 5000 DW-C thermodynamic water heater ?

Yes, Dualsun SPRING hybrid panels can be paired with BOSCH Compress thermodynamic water heaters:

CS4000DW 200-1 CFI
CS5000DW 270-3 CFI
CS5000DW 270-3 CFO

For optimal coupling, it is recommended to schedule heating time slots by the thermodynamic group compatible with the customer's consumption habits and solar heating hours.

Showers in the evening: 4 p.m. to 11 p.m.
Showers in the morning: 2 a.m. to 8 a.m.

The solar temperature sensor is to be installed in the thermowell (4) as shown below:

The coupling between the solar regulation and the thermodynamic water heater intelligence is not possible.