Adjusting Heating Curves - Viessmann VITOTRONIC300 Installation And Service Instructions Manual

Commissioning

Adjusting Heating Curves

Example:
For outside temperature 7°F (−14°C):
Legend
A Underfloor heating system, slope 0.2 to 0.8
B Low temperature heating system, slope 0.8 to 1.6
C Heating system with a boiler water temperature in
excess of 167°F (75°C), slope 1.6 to 2.0
60
Slope
Outside temperature in ° C
Vitotronic 300, GW2B Installation and Service
Settings in the factory set condition:
H Slope = 1.4
H Shift = 0
The heating curves illustrate the relationship between
the outside temperature and the boiler water or supply
temperature.
To put it simply: The lower the outside temperature,
the higher the boiler water or supply temperature.
The room temperature, again, depends on the boiler water
or the supply temperature.