The instructions apply to the web interface, the display of the controller, and the HMI controller POL871.
Description of the buttons on the HMI controller POL871:

A: INFO/ESCAPE (BACK)
B: ERROR MESSAGE
C: ESCAPE (BACK)
D: UP ARROW
E: DOWN ARROW
F: ENTER
(main menu, confirm with enter)

(using the up/down arrows and confirm with enter to return to the main menu)
(main menu, confirm with enter)
(confirm with enter)

On the Comfort line of the supply/exhaust fan, confirm with enter and use the arrows to switch to the fan power value [%]—use the arrows to change to the desired value and confirm with enter.
The Comfort value [%] is the upper limit of the speed of the remote control POL822.
The Damping value [%] is the lower limit of the speed of the remote control POL822.