Viessmann VITOTRONIC 300 Installation And Service Instructions Manual page 49

Vitotronic 300, GW5B & MW1B Installation and Service
Adjusting Heating Curves
Legend
A Boiler water temperature or supply temperature
B Outside temperature
C Set room temperature
D Heating circuit pump OFF
E Heating circuit pump ON
Outside temperature
Legend
A Changing the slope
B Changing the shift (vertical parallel offset of the
heating curve)
(continued)
Reduced set room temperature
Changing the reduced room temperature from 37 to 57° F
(3 to 14° C)
Changing the slope and shift
Individually adjustable for each heating circuit.
Extended menu:
1.
2. "Heating"
3. Select heating circuit.
4. "Heating curve"
5. "Slope" or "Shift"
6. Select heating curve according to the system
requirements.
Example:
Heating curve setting with slope 1.5:
Operating instructions
Commissioning
49