Viessmann VITODENS 222-F Installation And Service Instructions Manual page 54

Commissioning, inspection, maintenance
Further details regarding the individual steps
90
80
70
60
50
40
30
A Heating curve slope for underfloor
heating systems
B Heating curve slope for low temper-
ature heating systems (according to
the Energy Savings Order [Ger-
many])
54
Slope
10 5 0 -5 -10 -15 -20
Outside temperature in °C
(cont.)
1.4
1.2
1.0
B
0.8
0.6
A
0.4
0.2
-25 -30