First start-up
Installation, use and maintenance manual – Next-G
47
5
Table 5.5
Next-G 45 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
9,2
G25
-5
8,1
9,1
G25.1
-5
9,4
10,3
G25.3
-5
8,2
9,0
G27
-5
8,0
8,9
G2.350
-5
7,8
8,4
G30
-5
9,3
10,0
G31
-5
9,6
9,9
LPG
-5
9,4
10,0
A tolerance of ±0,3% is applied to all values of CO
2
percentage in fumes.
Table 5.6
Next-G 60 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
7,7
9,0
G25
-5
8,0
8,8
G25.1
-5
11,7
11,9
G25.3
-5
8,2
9,0
G27
-5
7,9
8,9
G2.350
-5
8,1
9,3
G30
-5
9,8
10,2
G31
-5
9,4
9,9
LPG
-5
9,6
10,1
A tolerance of ±0,3% is applied to all values of CO
2
percentage in fumes.
5.2.2
G 75, G 90
Figure 5.2
1. If the appliance is not running, switch it on using the
applicable control system.
2. Open the thermoformed door.
3. Connect a pressure gauge to offset pressure intake (A),
after having first removed or loosed the sealing screw.
4. Press the
key on the user interface of the appliance
for 5 seconds to activate the chimney sweep function
at minimum power.
5. The display shows the letters "CS.LO" (chimney sweep
low power), alternating with the flashing message
"UAIt" (wait) which indicates that the machine is not
yet ready for the reading.
6. After up to 8 minutes the flashing message becomes
"_GO_" to indicate that the combustion control can be
carried out.
7. Ensure that the CO
2
value corresponds to the value
indicated in the "Minimal heat input" column of the
following Tables, according to the model and the gas
type used. Otherwise, set CO
2
percentage value using
the offset adjustment screw.
8. Disconnect the pressure gauge and tighten the seal-
ing screw of the pressure intake (A).
9. Press the
key on the user interface to activate the
chimney sweep function at maximum power.
10. The display shows the letters "CS.HI" (chimney sweep
high power), alternating once again with the flashing
message "UAIt" (wait) which indicates that the ma-
chine is not yet ready for the reading.
11. After a short while, the flashing message becomes "_
GO_" again to indicate that the combustion control at
maximum power can be carried out.
12. 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.
Check the burner at the maximum power, which
must not show any reddened areas.
If the check is successful:
13. Press the
key on the user interface again for 5 sec-
onds to deactivate the chimney sweep function and
complete the procedure.
14. Close the thermoformed door.
If the check is not successful:
15. 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.
16. Repeat steps 13 and 14 to complete the procedure.
Figure 5.2
Gas valve
A Offset pressure intake
B
Gas mains pressure intake
C
Offset adjustment screw
A
C
B
