Viessmann Vitodens 200-W Series Installation And Service Instructions Manual page 41

Adjusting the heating curves (only for...
90
80
70
60
50
40
30
10
Fig. 36
Slope setting ranges:
Underfloor heating systems: 0.2 to 0.8
■
Low temperature heating systems: 0.8 to 1.6
■
Selecting the set room temperature
Individually adjustable for each heating circuit.
The heating curve is offset along the axis of the set
room temperature. With the heating circuit pump logic
function enabled, the curve modifies the starting and
stopping characteristics of the heating circuit pump.
Standard set room temperature
90
A
C
-20
B
D E
Fig. 37 Example 1: Adjustment of the standard set
room temperature from 20 to 26 °C
Boiler water temperature or 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
Changing the standard set room temperature
Operating instructions
Slope
5 0 -5 -10 -15 -20
Outside temperature in °C
Commissioning, inspection, maintenance
(cont.)
1.4
1.2
1.0
0.8
0.6
0.4
0.2
-25 -30
Reduced set room temperature
90
A
C
B
D
Fig. 38 Example 2: Adjustment of the reduced set
room temperature from 5 °C to 14 °C
A Boiler water temperature or flow temperature in °C
Outside temperature in °C
B
Set room temperature in °C
C
Heating circuit pump "OFF"
D
Heating circuit pump "ON"
E
Changing the reduced set room temperature
Operating instructions
Changing the slope and level
Individually adjustable for each heating circuit.
-20
E
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