EXTREMA
9
EN
cod. 3540S060 - 04/2010 (Rev. 00)
fig. 14 - Compensation curves
fig. 15 - Example of compensation parallel curve offset
Water system pressure adjustment
The filling pressure with system cold, read on the boiler water gauge, must be approx. 1.0 bar. If the system pressure
falls to values below minimum, the boiler PCB will display fault F37 (fig. 16).
fig. 16 - Low system pressure fault
A
Once the system pressure is restored, the boiler will activate the 120-second air venting cycle indicated on the
display by FH.
20
30
40
50
60
70
80
90
85
20
10
0
-10
-20
1
2
3
4
5
6
8
9
10
7
Maximum boiler flow temperature
Outside Air Temperature
20
30
40
50
60
70
80
90
85
20
10
0
-10
-20
1
2
3
4
5
6
8
9
10
7
20
10
0
-10
-20
20
30
40
50
60
70
80
90
85
1
2
3
4
5
6
8
9
10
7
OFFSET = 20
OFFSET = 40
Maximum boiler flow temperature
Outside Air Temperature
Maximum boiler flow temperature
Outside Air Temperature
IIIIIII
IIIIII
IIII
I
IIII
IIII
IIII
IIII
IIII
IIII
IIII
IIII
IIII
IIII
III
III
III
IIII
IIIIII
IIIIIIIII
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
IIIIII
IIII
IIII
IIIIII
IIIII
IIII
IIII
IIII
IIII
IIII
IIII
IIII
I
