Table of Contents
Advertisement
Available languages
Available languages
WARNING
Tighten the screws (7) completely (without locking them); then lock them with a torque wrench setting of
3 - 4 Nm.
Check there are no gas leaks from the screws during these operations.
4.3
AIR DAMPER SETTING,
Do not carry out the first ignition with the air
damper lower than set point 1.
The air damper leaves the factory set on set point 1.
To vary the setting proceed as follows:
Loosen the nut (9) and the screws (8).
Once you have done, tighten the nut (9).
4.4
PROBE-ELECTRODE POSITIONING
Ensure that the plate (3, fig. 9) is always inserted in the
flattening of the electrode.
Lean the probe insulator (4) against the cup (2).
ATTENTION
KEEP TO GIVEN DISTANCES
4.5 COMBUSTION CHECK
It is advisable to set the burner according to the type of gas used and following the indications of the table:
EN 676
Theoretical max. CO
GAS
0 % O
G 20
11.7
G 25
11.5
G 30
14.0
G 31
13.7
IONIZATION CURRENT
The minimum current necessary for the con-
trol box operation is 5 µA.
The burner normally supplies a higher cur-
rent value, so that no check is needed. Any-
way, if you want to measure the ionization
current, you have to open the connector
(CN1 see electrical scheme page 10) fitted
on the wire and insert a microammeter.
20098824
(fig. 8, page 11)
TYPE
A (mm)
912 T2
913 T2
914 T2
AIR EXCESS: max. output λ
Setting CO
2
λ = 1.2
2
9.7
9.5
11.6
11.4
3.5
±
0.3
30
31
31
%
2
λ = 1.3
9.0
8.8
10.7
10.5
12 GB
Fig. 9
A
±
0.3
1
3
4
≤ 1.2
– min. output λ
CO
mg/kWh
mg/kWh
≤
100
≤
100
≤
100
≤
100
CN1
_
+
D4631
2
D6088
≤ 1.3
NO
x
≤
170
≤
170
≤
230
≤
230
SO
Advertisement
Chapters
Table of Contents
