Maximum Gas Pressure Switch; Minimum Gas Pressure Switch - Riello RS 55/M BLU Installation, Use And Maintenance Instructions

6.6.6

Maximum gas pressure switch

Adjust the maximum gas pressure switch after performing all oth-
er burner adjustments with the maximum gas pressure switch set
to the end of the scale (Fig. 31).
With the burner operating at maximum output, lower the adjust-
ment pressure by slowly turning the relative knob anticlockwise
until the burner locks out.
Now turn the knob clockwise by 0,2 kPa (2 mbar) and repeat the
start-up of the burner.
If the burner locks out again, turn the knob clockwise again by
0,1 kPa (1 mbar).
6.6.7

Minimum gas pressure switch

Adjust the minimum gas pressure switch after performing all the
other burner adjustments with the pressure switch set to the start
of the scale (Fig. 32).
With the burner operating at maximum output, increase adjust-
ment pressure by slowly turning the relative knob clockwise until
the burner stops.
Now turn the knob anticlockwise by 0,2 kPa (2 mbar) and repeat
burner start-up to ensure it is uniform.
If the burner locks out again, turn the knob anticlockwise again by
0,1 kPa (1 mbar).
1 kPa = 10 mbar
WARNING
20040559
Start-up, calibration and operation of the burner
26 GB
D66
D3855
Fig. 31
Fig. 32