Air Proving Switch; Operating And Modulating Controls - Webster JBE Series Operation, Maintenance & Installation Manual

need picture of Low Oil Tem-
perature switch
Figure E–9 Oil Pressure Regulator Adjustment
Figure E-10 Low Oil and Atomizing Air Pressure
Switches

10. Air Proving Switch

The air proving switch has been adjusted at the factory for
an initial setting. If this switch trips during initial startup, turn
the adjustment screw ccw two full turns to reduce the trip
pressure setting (Figure E-11).
Figure E-11 Air Proving Switch Adjustment
JBE(X) Manual
Regulator
Pump
Pressure
Setting
(Screwdriver is
Adjusting Setting
Differential
Pressure
Panel
Adjusting
Screw
Air Proving
Switch
Page 39

11. Operating and Modulating Controls

The operating controls will not be used during the
burner setup, except that the high limit and operating
controls can cycle the burner off and should be set for
the highest allowable pressure for the application.
The high limit control should be set at the maximum
temperature or pressure allowed for the boiler vessel
or piping. The operating control should be set at a high
enough pressure to prevent this control from turning
the burner off unless the operating temperature or
pressure is at the maximum value. The modulating
control should be set at a value below the operating
control to prevent the unit from modulating immediately
after starting.
Section E - Preliminary Adjustments