Riello C9541000, Инструкции по установке, использованию и обслуживанию

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2915847
22 GB
Start-up, calibration and operation of the burner
5.3 Burner start-up
Close the control circuit and set switch 1)(Fig. 25) to “MAN”.
As soon as the burner starts check the direction of rotation of the
fan blade, looking through the flame inspection window 18) (Fig. 3,
page 8).
5.4 Burner firing
Having completed the checks indicated in the previous heading,
the burner pilot should fire. If the motor starts but the flame does
Having completed the checks indicated in the previous heading,
the pilot of 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 attempt. Pilot adjustment has been illustrated page 14.
Having adjusted the pilot, reconnect the main valve and ignite the
main flame; it might require several attempts to purge the air from
the gas lines or to adjust the valve with little gas.
Once the burner has fired, now proceed with calibration operations.
5.5 Burner calibration
The optimum calibration of the burner requires an analysis of the
flue gases at the boiler outlet.
Adjust successively:
1 - First firing output
2 - Max. burner output
3 - Min. burner output
4 - Intermediate outputs between low and high fire
5 - Air pressure switch
6 - Minimum gas pressure switch
5.5.1 Firing output
Pilot adjustment has been illustrated on page 7.
5.5.2 Maximum output
The maximum output of the burner must be set within the firing rate
range shown on page 9.
In the above instructions we left the burner running in MIN. output
operation. Now press switch 2)(Fig. 25) “increase output” and keep
it pressed until the servomotor has opened the air damper and the
gas butterfly valve to 90°.
Gas calibration
Measure the gas delivery at the meter.
A guideline indication can be calculated from the table on page 6,
simply read off the gas pressure on the U-type manometer, see
Fig. 23, and follow the instructions on page 17.
–
If delivery needs to be reduced, reduce outlet gas pressure
and, if it is already very low, slightly close adjustment valve.
– If delivery needs to be increased, increase outlet gas pressure.
Adjusting air delivery
Progressively adjust the end profile of cam 4)(Fig. 26) by turning
the cam adjustment screws as they appear through the access
opening 6)(Fig. 26).
–
Turn the screws clockwise to increase air delivery.
– Turn the screws counter-clockwise to reduce air delivery.
Key
1 Servomotor
2 Lever, push to engage, push to release
3 Adjustable profile cam
4 Cam profile adjustment screws
5 Opening for access to screws 5
6 Index for graduated sector 8
7 Graduated sector for gas butterfly valve
Fig. 25
1 2
D791
Fig. 26
D2267