Adjusting The Heating Curves - Viessmann VITOLIGNO 250-S Operating Instructions Manual

Time program
(cont.)
Restoring the time phases to the factory settings
Note
The time phases are only reset to factory settings
when you reset all settings for the selected heating cir-
cuits.
Heating curve

Adjusting the heating curves

■ You can alter the heating characteristics if the room
temperature does not meet your requirements for
any prolonged period of time.
■ You alter the characteristics by changing the slope
and level of the heating curve. For more information
regarding the heating curve, see page 24.
Please observe the modified heating characteristics
■
over several days (if possible, wait for a significant
change in the weather) before making further adjust-
ments.
Heating characteristics
The living space is too cold during the
cold season.
The living space is too hot during the
cold season.
The living space is too cold during
spring/autumn and during the cold sea-
son.
The living space is too hot during
spring/autumn and during the cold sea-
son.
The living space is too cold during
spring/autumn, but warm enough during
the cold season.
The living space is too hot during spring/
autumn, but warm enough during the cold
season.
Press the following keys:
1. For the "Extended menu".
å
2. / To select "Heating".
| ~
3. To confirm.
d
The steps for restoring factory settings can be found
on page 33.
Changing the slope and level
Please use the following table as an aid to making
adjustments.
Measure
Adjust the heating curve slope to the next
higher value (e.g. 1.5).
Adjust the heating curve slope to the next
lower value (e.g. 1.3).
Adjust the heating curve level to the next
higher value (e.g. +3).
Adjust the heating curve level to the next
lower value (e.g. 3).
−
Set the heating curve slope to the next low-
er value and the level to a higher value.
Set the heating curve slope to the next
higher value and the level to a lower value.
4. /
Ù Ú
5. /
| ~
6.
d
Example
Slope
Level
Slope
Level
Slope
Level
Slope
Level
Slope
Level
Slope
Level
To select "Heating circuit 1" (HC1),
"Heating circuit 2" (HC2) or "Heating cir-
cuit 3" (HC3).
For "Heating curve".
To confirm.
Central heating
1.5
0 K
1.3
0 K
1.4
3 K
1.4
-3 K
1.3
3 K
1.5
-3 K
23