Stopping The Central Heating - Viessmann VITOLIGNO 250-S Operating Instructions Manual

Central heating
Heating curve
(cont.)
7. / For "Slope"
| ~
or "Level".
8. To confirm.
d
9. / For the required value.
| ~
Heating curve
100°C
23°C
55°C
41°C
20 10 0
Slope
Change with
Fig. 19
10. To confirm.
d
Note
Setting the heating curve slope or level too high or too
low will not result in damage to your heating system.
90
80
70
60
50
40
30
Fig. 20
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 a boiler water temperature
C
above 75 °C, slope 1.6 to 2.0

Stopping the central heating

Heating program
Heating
Standby mode
Select with
Fig. 21
24
HC1
81°C
68°C
-20 -30
-10
1.5
(
10 0 -10
-14
Outside temperature in °C
14 °C:
−
For technically-minded system users
Heating curves illustrate the relationship between the
■
outside temperature and the flow temperature. Sim-
plified: The lower the outside temperature, the higher
the flow temperature.
The illustrated heating curves apply with the following
settings:
Heating curve level = 0
■
A different setting for the level will shift the curve in
parallel in a vertical direction.
■ Standard room temperature = approx. 20 °C
In the delivered condition, the slope is set to 1.4; the
level to 0.
Slope
1.4
C
1.2
1.0
B
0.8
0.6
0.4
A
0.2
-20 -30
Press the following keys:
1. Repeatedly, until the standard menu is dis-
ä
played.
2. / For "Heating".
| ~
3. To confirm.
d