Viessmann VITOTROL 100 Operating Instructions Manual page 20

Further adjustments
Control characteristics
Heating stops as soon as the actual room temperature exceeds 21.3 °C. Heating
starts as soon as the actual room temperature falls below 20.7 °C.
You can change the control characteristics by changing the hysteresis value. Select
a lower value if your system responds too slowly.
1. Open the flap.
2. Press å twice.
3. With v/V select "Settings".
4. Confirm with OK.
5. With v/V select "Service".
6. Confirm with OK.
7. With v/V set the required hystere-
sis value.
8. Confirm twice with OK.
9. Only for the Vitotrol 100, type UTDB-
RF:
Exit the menu with ä.
20
(cont.)