Maximum Gas Pressure Switch; Final Checks (With Burner Operating) - Riello RS 1200/EV Installation, Use And Maintenance Instructions

5.5.2

Maximum gas pressure switch

Adjust the maximum gas pressure switch after having performed all
other burner adjustments with the maximum gas pressure switch
set to the end of the scale (Fig. 26).
With the burner operating at MAX output, reduce the adjustment
pressure by slowly turning the adjustment dial anticlockwise until
the burner locks out.
Then turn the dial clockwise by 0.8" WC and repeat burner firing.
If the burner locks out again, turn the dial again clockwise by
0.4" WC.
5.6

Final checks (with burner operating)

 Open the thermostat/pressure switch TL
 Open the thermostat/pressure switch TS
 Turn the gas maximum pressure switch knob to the mini-
mum end of scale position
 Turn the air pressure switch to the maximum end of scale
position.
 Turn off the burner and cut off the power.
 Disconnect the minimum gas pressure switch connector.
 Disconnect the ionisation probe wire
Make sure that the mechanical locking systems on
the various adjustment devices are fully tightened.
WARNING
20060897
Start-up, calibration and operation of the burner
24
The burner must stop
The burner must stop in lockout
The burner must not start
The burner must stop in lockout due to ignition failure
GB
D9272
Fig. 26
Tab. J