Modifying The Boiler Heating Characteristics; Changing The Slope And Level - Viessmann VITOLIGNO 300-P Operating Instructions Manual

Modifying the boiler heating characteristics

You can alter the heating characteristics if the room temperature does not meet your
requirements for some time.
You alter the characteristics by changing the slope and level of the heating curve.
For more information regarding the heating curve, see page 40.
Observe the modified heating characteristics over several days (if possible, await a
major change in the weather) before making further adjustments.
Make short-term adjustments to the standard room temperature as on page 18.
Make short-term adjustments to the reduced room temperature as on page 19.

Changing the slope and level

For assistance, use the following table.
Heating characteristics
The living space is too cold
during the heating season
The living space is too hot
during the heating season
The living space is too cold
during spring/autumn and
during the heating season
The living space is too hot
during spring/autumn and
during the heating season
The living space is too cold
during spring/autumn, but
warm enough during the
heating season
The living space is too hot
during spring and autumn,
but warm enough during the
heating season
Measures
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 a lower value
(e.g. −3)
Adjust the heating curve
slope to the next lower
value and the level to a
higher value
Adjust the heating curve
slope to the next
higher value and the
level to a lower value
Further adjustments
Example
Slope 1.5
Level 0 K
Slope 1.3
Level 0 K
Slope 1.4
Level 3 K
Slope 1.4
Level -3 K
Slope 1.3
Level 3 K
Slope 1.5
Level -3 K
39