Ferroli optima 2001 VMF7 Installation Instructions Manual page 20

7.4 Setting of compensation curve
The boiler can now be regulated to ensure the design critia of the system is matched to the outside tempera-
ture
7.4.1 Consult the outside compensation graph provided (fig. 19c)
7.4.2 Following the bottom ouside temperature line to find the outside temperature. The system is designed for.
7.4.3 Trace a line vertically until you reach the designed system flow temperature.
7.4.4 Read from the graph the number setting that the boiler is to be adjusted to. If the setting is between two
numers this can be set on the boiler, say between 2 and 3.
7.4.5 Remove the plastic cover of the outside compensation adjustment screw on the boiler facia panel (fig. 19d)
90
80
70
60
50
40
30
20
20 15 10
Ouside temperature °C
7.4.6 By use of a small screwdriver set the arrow on the adjustment screw to desired setting
20
5
5 0 -5 -10 -15 -20
Fig. 19c
2001
4
3
2
MIN.
1
Outside compensation
adjustment screw
3
2 4
1 5
MIN.
MAX.
° °
C C
1 2 3 4 5 6
LEDS
Fig. 19d
MAX.