Technical data

Slope
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
3.4 3.2 3.0 2.8 2.6 2.4
110/230
100/212
70/158
60/140
50/122
40/104
30/86
80/176
90/194
10
50
5
41
0
32
-5
23
-20
-4
-10
14
-15
5
Supply tempertaure in ºC / ºF
Outdoor temperature in ºC / ºF
Set room temperature in ºC / ºF
35
95
25
77
30
86
20
68
5
41
15
59
10
50
100
Initial start-up
Further step-by-step instructions (continued)
Adjusting the heating curve (Vitocontrol-S, VD2/CT3/CM2)
The heating curves illustrate the relationship between the outdoor temperature and the boiler water or the supply
temperature. To put it simply: the lower the outdoor temperature, the higher the boiler water or supply temperature. The
room temperature again depends on the boiler water or the supply temperature.
Factory default settings:
Slope: = 1.4
Shift: = 0
Generally, the heating curve is set:
In range A for underfloor heating systems,
In range B for low temperature heating systems (according to the Energy Savings Order),
In range C for heating systems with boiler water temperatures above 75˚C / 167˚F.
5351 340 v1.4