User manual
4949
17. Setting the frost protection Mode
If a room is not to be heated, the valve can be closed. The
valve is only opened if there is danger of frost. The protection
against calcication continues however to be carried out.
To deactivate the frost protection proceed as follows:
• Turn the selector dial in manual Mode (Manu) to the left
until „OFF“ appears in the display.
• To end it, exit the manual Mode (Manu) or turn the se-
lector dial to the left.
18. „Window open“ function
With a rapidly reducing temperature, the actuator auto-
matically detects that a room is being ventilated. In order
to save heating costs, the temperature is then regulated
down for a certain period of time (15 minutes, set at the
factory). During this period the „Window open“ symbol
is shown in the display.
To activate this function proceed as follows:
• Press the Menu key longer than 3 seconds.
• Select the „AER“ menu item with the selector dial and
conrm with the OK key
• The temperature and time can be set with the selector
dial. The function can be deactivated by selecting „0“
for the time.