Setting The Heating Curves - Viessmann VITOLIGNO 300-C Installation And Service Instructions Manual

Vitoligno 300-C Installation/Service

Setting the Heating Curves

Example for outdoor temperature 5°F (−15°C)
Underfloor heating system, slope 0.2 to 0.8
A
Low temperature heating system, slope 0.8 to 1.6
B
Heating systems with a boiler water temperature in
C
excess of 167°F (75°C), slope greater than 1.6
Standard set room temperature
Adjustment of the standard set room temperature
from 68 to 79°F (20 to 26°C).
Legend
Boiler water temperature or supply temperature
A
Outdoor temperature
B
Set room temperature
C
Heating circuit pump "Off"
D
Heating circuit pump "On"
E
Commissioning, Inspection and Maintenance
The heating curves represent the relationship between
the outdoor temperature and the supply temperature.
To put it simply: The lower the outdoor temperature,
the higher the supply temperature.
The supply temperature in turn affects the room
temperature.
Settings in the factory set condition:
Slope = 1.4

Shift = 0

Setting the set room temperature
Individually adjustable for each heating circuit. The
heating curve is offset along the set room temperature
axis. With the heating circuit pump logic function enabled,
the curve modifies the start and stop characteristics of
the heating circuit pump.
Press the following keys:
1. å.
2. for selecting the heating circuit.
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3. d to confirm.
4. to select "Heating circuit 1" (HC1), "Heating
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circuit 2" (HC2), "Heating circuit 3" (HC3) or
"Heating circuit 4" (HC4).
5. for "Standard room temp.".
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6. d to confirm.
7. for the required value.
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8. d to confirm.
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