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4.0 Start-Up And Adjustment
(continued)
Step 3: Adjust Pilot
Drive the control motor to low fire and set the system to operate on pilot only.
Turn the handle of the pilot adjusting cock open to light the pilot.
Turn the internal screw shown below counterclockwise to increase flow,
clockwise to decrease flow, until the pilot gives reliable ignition and a steady
flame signal with minimum pilot gas flow.
50 through 600 Sizes
750 through 2500 Sizes
Pilot Cock
Cap
Handle
Remove to Adjust
Top Screw
Shown in
Remove to Adjust
Open Position
Adjusting Screw
Clockwise for less pilot gas;
Counterclockwise for more pilot gas.
10
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