Pressure Switch Adjustment - Riello RL 70/M Installation, Use And Maintenance Instructions

7.4

Pressure switch adjustment

7.4.1 Oil pressure switch
The oil pressure switch 5)(Fig. 4 on page 10) is factory set to 3
bar. If the gas oil pressure reaches this value in the return piping,
the pressure switch stops the burner.
Burner starts again automatically if the pressure goes down un-
der 3 bar after burner shut down.
If a loop circuit with Px pressure feeds the burner, the pressure
switch should be adjusted to Px + 3 bar.
To adjust the pressure switches, set the adjustment screw with a
tool, see Fig. 33.
Start-up, calibration and operation of the burner
27 GB
20079898
Fig. 33
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