Appendix
Terminology
(cont.)
110
100
90
80
70
60
50
40
30
Fig. 37
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 in
C
excess of 75 °C, slope 1.6 to 2.0
46
10
5
0
-5 -10 -15 -20
Outside temperature in °C
14 °C:
−
Slope
1.8
1.6
C
1.4
1.2
1.0
B
0.8
0.6
0.4
A
0.2
-25
-30