Flame Signal Measurement; Final Checks (With The Burner Working) - Riello RS 28/E Installation, Use And Maintenance Instructions

5.8

Flame signal measurement

Check the flame signal through the parameter 954, as indicated in
Fig. 30. The displayed value is expressed in percentage.
For further and specific information, please refer to the specific in-
struction manual.
The value during the operation must be higher than 24%. If at the
burner start-up the value is higher or equal of 18%, the burner locks
out due to the extraneous light.
The display (Fig. 30) shows parameter 954: flashing on the left. On
the right, the flame's intensity is displayed as a percentage.
Example: 954: 0.0
5.9

Final checks (with the burner working)

 Open the control limit operation
 Open the high limit operation
 Rotate the maximum gas pressure switch knob to the mini-
mum end-of-scale position (if installed)
 Rotate the air pressure switch knob to the maximum end of
scale position
 Switch off the burner and disconnect the voltage
 Disconnect the minimum gas pressure switch
 Cover the UV flame sensor
Make sure that the mechanical locking systems on
the different adjustment devices are fully tightened.
WARNING
Start-up, calibration and operation of the burner
25
S8171

The burner must stop

The burner must stop in lockout

The burner must not start

The burner must stop in lockout due to firing failure
GB
P
V h min s %
Fig. 30
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