14
15.2. PILOT BURNER
Turn the gas valve control knob counterclockwise to off position and allow the boiler to try for
ignition. Observe the spark making sure that it is strong and continuous.
If the spark is not acceptable the igniter will have to be removed. This can be readily
accomplished by first removing the burners tray assembly from the boiler as detailed in 15.1.
The spark gap should be 1/8” to 3/16”. Make sure that the electrode does not appear
overheated or fouled with carbon. It may be necessary to clean the ignition electrode using
sandpaper. Once the pilot appears to be properly set, reinstall it into the boiler making sure to
properly tighten the pilot line connection.
Once the spark is satisfactory, open the pilot gas and allow the pilot burner to light. Once air has
been purged from the pilot line, the pilot flame should appear almost instantly at the initiation of
spark. Cycle the pilot several times to confirm reliability. A properly set pilot will appear blue and
will engulf the ignition sensor and ground plate. (See figure 7)
Figure 7
Turn the gas control to “ON” and allow the main burner to light. The pilot must not extinguish.
After running for 15 minutes, cycle the boiler to ensure that the pilot remains stable.
Summary of Contents for BLUE-FLAME Series
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