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Indication for the burner ignition
In Tab. K the calibrations of the air and gas servomotors at the
ignition point for each model are summarized according to the
change of the maximum burnt power.
Ignition point - RS 310 ULX -
Maximum power input (kW)
Gas motor/butterfly setting
Air servomotor/damper setting
Ignition point - RS 510 ULX -
Maximum power input (kW)
Gas motor/butterfly setting
Air servomotor/damper setting
To determine the calibrations to use at the first start, proceed as
follows:
1
Determine the maximum power required by the burner.
2
Open the combustion head as indicated in Fig. 18 on
page 23.
3
Calculate the pressure required downstream of the gas
train: this value is given by the sum of the boiler back pres-
sure at the maximum burnt power and the pressure drop
read on the diagrams of Fig. 23 on page 26.
4
Set the air and gas servomotors as suggested in Tab. K. If
the maximum power falls between two indicated values,
take an intermediate value between the two according to the
opening degrees of the air and gas servomotors.
At the first ignition it is not recommended to
use an air servomotor setting that exceeds the
suggested setting by 10% .
WARNING
20205048
Start-up, calibration and operation of the burner
3700
3400
1250
5°
5°
6°
6°
4600
3550
1900
8°
8°
3°
3°
Tab. K
5.4.6
Minimum output
The MIN output must be set within the firing rate (Fig. 2 on
page 9).
8°
1°
8°
1°
32
GB
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