HomeMatic HM-CC-TC, Installation And Operating Manual

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sors are indicated by the window symbol in addition to
their device number on the display. Confirm the unteach-
ing with the "OK" button. After successfully unteaching,
"OK" appears on the display for approx. 3 seconds.
You can also activate teaching mode by pressing the "OK" but-
ton with an extended button press (> 5 seconds).
8.6 Automatic decalcification procedure settings
"DEC"
To prevent the heating valve from blocking because of sedimen-
tation, it is opened and closed completely once per week. Use
special function "DEC" to change the time that the decalcifica-
tion procedure should be performed.
Call up special function "DEC" and confirm with the "OK" button.
Now choose the weekday for the decalcification procedure and
confirm your entry with the "OK" button. Use the setting dial to
choose the time for the decalcification procedure. Confirm the
entry with the "OK" button.
8.7 Configuring the used temperature unit "C/F"
You can switch between the temperature display in degrees
Celsius or degrees Fahrenheit with this menu point.
Call up special function "C/F" and confirm with the "OK" button.
Use the dial to choose the desired temperature unit.