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Combustion
If the combustion values found at the start of the intervention do
not satisfy current standards or anyway indicate a poor state of
combustion (consult the table below), contact the Technical As-
sistance Service for the necessary adjustments.
7.3
Opening the burner
Disconnect the electrical supply from the burner
by means of the main system switch.
DANGER
Close the fuel interception tap.
DANGER
Wait for the components in contact with heat
sources to cool down completely.
2
20089813
7.4
Closing the burner
Refit following the steps described but in reverse order; refit all
burner components as they were originally assembled.
Carry out all maintenance work and mount the
casing again.
1
5
3
4
2
Maintenance
EN 676
Theoretical
max. CO
GAS
0 % O
G 20
11.7
G 25
11.5
G 30
14.0
G 31
13.7
➤ Remove the tie-rods 1) and 4)(Fig. 37) of the head move-
ment and damper opening lever, loosening the nuts 2);
➤ disconnect the socket 3) of the servomotor;
➤ remove the screws 5).
➤ At this point, it is possible to open the burner on the hinge.
31
GB
Air excess
Max. output
Max. output
λ ≤ 1.2
λ ≤ 1.3
CO
% Calibration
2
2
λ = 1.3
λ = 1.2
2
9.7
9.5
11.6
10.7
11.4
10.5
5
5
CO
mg/kWh
≤ 1000
9
≤ 1000
8.8
≤ 1000
≤ 1000
Tab. O
Fig. 37
20061862
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