Vaillant VRC 470 Installation Insrtuctions - page 15

Outside temperature in °C

4.0 3.5 3.0 2.5

2.0 1.8

1.5

1.0

0.6

0.8

0.2

0.1

0.4

70

60

50

40

30

15

10

5

0

-5

-10

-15

-20

1.2

Flow temperature in °C

Heat curves

18

22

20

Target 

room temperature

Outside temperature in °C

0.4

70

60

50

40

30

15

10

5

0

-5

-10

-15

-20

Flow temperature in °C

Axis a