Viessmann VITOLIGNO 300-C Installation And Service Instructions Manual page 77

Setting the heating curves
90
80
70
60
50
40
30
10
Fig. 60
Example for outside temperature
Underfloor heating system, slope 0.2 to 0.8
A
Low temperature heating system, slope 0.8 to 1.6
B
Heating system with flow temperature above
C
75 °C, slope 1.6 to 2.0
Selecting the set room temperature
The set room temperature can be adjusted separately
for each heating circuit.
Standard room temperature
110
A
C
-20°C
B
D
Fig. 61 Changing the standard room temperature
from 20 to 26 °C
Flow temperature in °C
A
Outside temperature in °C
B
Set room temperature in °C
C
Heating circuit pump off
D
Heating circuit pump on
E
(cont.)
0 -10 -20
-14
Outside temperature in °C
14 °C:
−
26°C
20°C
E
Commissioning, inspection, maintenance
Slope
1.4
C
1.2
1.0
B
0.8
0.6
0.4
A
0.2
-30
The heating curve is offset along the set room temper-
ature axis. With the heating circuit pump logic function
enabled, the curve modifies the start and stop charac-
teristics of the heating circuit pump.
Press the following keys:
1. .
å
2. / For selecting the heating circuit.
| ~
3. To confirm.
d
4. / For "Standard room temp."
| ~
5. To confirm.
d
6. / For the required value.
| ~
7. To confirm.
d
77