First start-up
46
5
13. After a short while, the flashing message becomes "_
GO_" again to indicate that the combustion control at
maximum power can be carried out.
14. Ensure that the CO
2
value corresponds to the value
indicated in the "Nominal heat input" column of the
following Tables, according to the model and the gas
type used. Otherwise, set CO
2
percentage value using
the throttle adjustment screw.
15. Disconnect the pressure gauge from the throttle pres-
sure intake (E) and tighten its sealing screw.
Check the burner at the maximum power, which
must not show any reddened areas.
If the check is successful:
16. Press the
key on the user interface again for 5 sec-
onds to deactivate the chimney sweep function and
complete the procedure.
17. Screw the cap back over the offset adjustment screw
(C) of the gas valve.
18. Close the thermoformed door.
If the check is not successful:
19. Repeat the checking procedure, at the minimum heat
input or at the maximum heat input, until CO
2
values
corresponding to those indicated in the following
Tables are achieved, according to the model and the
type of gas used.
20. Repeat steps 16 to 18 to complete the procedure.
Figure 5.1
Gas valve
A Offset pressure intake
B
Gas mains pressure intake
C
Offset adjustment screw
D Throttle adjustment screw
E
Throttle pressure intake
B
A
C
E
D
Table 5.2
Next-G 20 gas valve setting table
Gas
Gas
network
pressure
Offset
pressure
CO
2
percentage in fumes
nominal
Minimal heat
input
Nominal heat
input
Type
mbar
Pa
%
%
G20
See Table
3.1
-5
8,8
9,3
G25
-5
8,8
9,2
G25.1
-5
10,2
10,5
G25.3
-5
9,0
9,4
G27
-5
8,8
9,0
G2.350
-5
8,7
9,0
G30
-5
10,2
10,5
G31
-5
10,4
10,7
LPG
-5
10,3
10,6
A tolerance of ±0,3% is applied to all values of CO
2
percentage in fumes.
Table 5.3
Next-G 30 gas valve setting table
Gas
Gas
network
pressure
Offset
pressure
CO
2
percentage in fumes
nominal
Minimal heat
input
Nominal heat
input
Type
mbar
Pa
%
%
G20
See Table
3.1
-5
8,1
9,5
G25
-5
8,1
9,7
G25.1
-5
9,1
10,9
G25.3
-5
8,1
9,6
G27
-5
8,0
9,3
G2.350
-5
7,8
9,4
G30
-5
8,9
10,5
G31
-5
8,3
10,3
LPG
-5
8,8
10,2
A tolerance of ±0,3% is applied to all values of CO
2
percentage in fumes.
Table 5.4
Next-G 35 gas valve setting table
Gas
Gas
network
pressure
Offset
pressure
CO
2
percentage in fumes
nominal
Minimal heat
input
Nominal heat
input
Type
mbar
Pa
%
%
G20
See Table
3.1
-5
8,6
9,5
G25
-5
8,2
8,9
G25.1
-5
10,8
11,5
G25.3
-5
8,6
9,2
G27
-5
9,4
9,8
G2.350
-5
8,8
9,4
G30
-5
10,1
10,3
G31
-5
9,6
10,1
LPG
-5
9,8
10,2
A tolerance of ±0,3% is applied to all values of CO
2
percentage in fumes.
