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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.
7.2.3
Positioning the revolution sensor
In the event the revolution sensor is malfunction-
ing or needs replacing, check/reset its position in-
side the fan motor cover.
WARNING
To adjust, proceed as follows:
➤ loosen the screws 3) and rest the sensor against the plate of
the disc 2);
➤ referring to the scale 4) draw back the revolution sensor by
about a notch so that there is a distance of about 2 mm from
the disc plate 2).
Key (Fig. 35)
1
Revolution sensor
2
Disc
3
Screw
4
Scale
20087244
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
32
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
20087860
CO
mg/kWh
≤ 1000
9
≤ 1000
8.8
≤ 1000
≤ 1000
Tab. N
Fig. 35
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