Verify the shower
The final step is to start the shower to verify that it works as intended.
Turn on the power and water supply. It takes about 1 minute for the Core to start up.
Start the shower.

Set the temperature to 25 °C (turn the wheel or press the screen, depending on Control Dial version).

Let the shower run, and check that the recirculation starts within 5 minutes. This will be displayed on the Control Dial screen.

Inspect all water connection points carefully to ensure there are no leaks.