Riello RLS 28/E, Инструкции по установке, использованию и обслуживанию

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29 20059594 GB
Start-up, calibration and operation of the burner
203 PSI: in order to increase fuel delivery or to ensure firings
even at temperatures of less than 0 °C.
In order to adjust pump pressure, use the screw 5)(Fig. 23 at
page 24).
Low fire fan air damper
Keep the burner operating at low fire.
The fan air damper is adjusted by moving the servomotor to drive
from the air/fuel ratio.
High fire fan air damper
Increase output and keep it pressed until the high fire position.
The fan air damper is adjusted by moving the servomotor to drive
from the air/fuel ratio.
Store the two points of low fire/high fire.
5.4 Adjustments before first firing (gas operation)
Adjustment of the combustion head has been illustrated on
page 21.
In addition, the following adjustments must also be made:
➤ open manual valves down stream and up stream from the gas
train.
➤ Adjust the minimum gas pressure switch (Fig. 32) to the start
of the scale.
➤ Adjust the air pressure switch (Fig. 33) to the zero position of
the scale.
➤ Purge the air from the gas line.
Fit a U-type manometer (Fig. 29) to the gas pressure test point
on the sleeve. The manometer readings are used to calculate
the high fire burner firing rate using the tables on Tab. L at
page 26.
Before starting up the burner it is good practice to adjust the gas
train so that ignition takes place in conditions of maximum safety,
i.e. with gas delivery at the minimum.
5.5 Burner firing
Having completed the checks indicated in the previous heading,
the burner should fire.
If the motor starts but the flame does not appear and the flame
safeguard goes into lock-out, reset and wait for a new firing at-
tempt.
If the burner doesn’t start, purge and remove the air fron the gas
train and repeat the starting.
Once the burner has fired, now proceed with calibration operations.
5.6 Burner calibration (gas oparation)
The optimum calibration of the burner requires an analysis of the
flue gases at the boiler outlet.
Adjust successively:
➤ Firing output
➤ Maximum burner output
➤
Minimum burner output
➤ Intermediate outputs between low and high fire
➤ Air pressure switch
➤ Minimum gas pressure switch
Fig. 29
D10791