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table 2
MIN CH RPM FAN
NATURAL GAS
SPEED
(G20)
20 S
1.600
25 S
1.700
30 S
1.700
table 3
NATURAL GAS
SOFT IGNITION
(G20)
20 S - 25 S - 30 S
5.500
Enter
ƒ confirm values with
8.11 GAS VALVE CALIBRATION
Perform the CO2 verification procedure as indicated in para-
graph "8.4.1 Combustion check", if it is necessary to modify
the values, proceed as follows:
ƒ turn clockwise on the maximum power adjustment screw to
decrease the value
ƒ turn the minimum power adjustment screw clockwise to in-
crease the value.
CO
+
2
Min power
adjustment screw
Fig. 40
8.12 RANGE RATED
This boiler can be adapted to the heating requirements of the
system, in fact it is possible to set the maximum delivery for
heating operation of the boiler itself:
ƒ power up the boiler
ƒ access the technical parameters menu, as indicated in the
paragraph " "5.1 Access to the parameters""
ƒ select the P3 menu and confirm the selection with
ƒ the display shows P3.10, enter the sub-menu by pressing
ƒ set the maximum desired heating value (rpm) with the
and
keys, confirming the selection with
ƒ Once the required output has been set (maximum heating),
put the value on the self-adhesive label on the back cover
of this manual. For subsequent controls and adjustments,
refer to the set value.
b
The calibration does not entail the ignition of the boiler.
LPG
(G31)
2.000
rpm
2.000
rpm
2.000
rpm
LPG
(G31)
5.500
rpm
.
CO
-
2
Max power
adjustment screw
Enter
The boiler is delivered with the adjustments shown in the
technical data table.
Depending on plant engineering requirements or regional
flue gas emission limits it is, however, possible to modify this
value, referring to the following graphs.
HTG curve -
8000
7600
7200
6800
6400
6000
5600
5200
4800
4400
4000
3600
3200
2800
2400
2000
1600
1200
800
2
4
6
8
10
12
heat output (kW)
HTG curve -
7600
7200
6800
6400
6000
5600
5200
4800
4400
4000
3600
3200
2800
2400
2000
1600
1200
800
2
4
6
8
10
12
HTG curve -
8400
8000
7600
7200
6800
6400
6000
5600
5200
4800
4400
4000
3600
3200
2800
2400
2000
1600
1200
800
2
4
6
8
10
12
14
16
heat output (kW)
8.13 SETTING THE THERMOREGULATION
Enabling THERMOREGULATION occurs in the following way:
ƒ access the technical parameters menu, as indicated in the
paragraph " "5.1 Access to the parameters""
ƒ select the menu P4 and then P4.18 = 1.
20S
VISION PLUS
14
16
18
20
22
24
26
Portata termica (kW)
VISION PLUS
25 S
14
16
18
20
22
24
26
28
Portata termica (kW)
heat output (kW)
VISION PLUS
30 S
18
20
22
24
26
28
30
32
34
Portata termica (kW)
28
30
30
32
36
38
39
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