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Electrode unit
Make sure neither the electrodes nor probe feature marked warp-
ing or oxidation on surfaces. Make sure distances are still in line
with those indicated in this manual, readjusting to the right values
where necessary. Where necessary, remove oxide from the sur-
face of the probe with abrasive paper.
Gas train
Check valve setting and proportionality of operation by analysing
flue gases. Check the valve/manifold compensation pipe.
Gas filter
Change the gas filter when it is dirty.
Combustion
The optimum calibration of the burner requires an analysis of the
flue gases.
Significant differences with respect to the previous measurements
indicate the points where most care should be exercised during
maintenance.
In case the combustion values found at the beginning of the inter-
vention do not respect the standards in force or, in any case, do not
correspond to a proper combustion, contact the Technical Assis-
tant in order to carry out the necessary adjustments.
NOx expected emissions on Natural Gas
(expressed in ppm@3% O
Sub 30
CO
(%)
O
(%)
CO
(%)
2
2
2
8.5~8.75
5.8~5.4
8.0~8.5
)
2
Sub 20
Sub 9
O
(%)
CO
(%)
2
2
6.7~5.8
7.25~7.75
8.0~7.1
Maintenance
Safety components
The safety components must be replaced according to the limit of
the lifetime cycles indicated in the Tab. R.
The lifetime cycles specified, are not referred to the warranty time
indicated in the delivery and payment conditions.
Safety component
Control box
Flame sensor
Solenoid valves
Pressure switches
Gas pressure regulator
Servomotors
(electronic cam)
Solenoid oil valves
Oil regulator
Fuel pipes/ connectors
(metallic)
Hoses
Fan wheel
O
(%)
2
Tab. Q
35
GB
Lifetime cycle
10 years or 250,000 operating cycles
10 years or 250,000 operating cycles
10 years or 250,000 operating cycles
10 years or 250,000 operating cycles
15 years
10 years or 250,000 operating cycles
10 years or 250,000 operating cycles
10 years or 250,000 operating cycles
10 years
5 years or 30,000 pressure cycles
10 years or 500,000 startings
Tab. R
20051011
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