THE GUARDIAN MODEL 102  FLARE IS DESIGNED TO LIGHT THE PILOT AND SENSE THE FLAME USING A SINGLE ELECTRODE.  THE PILOT SENSOR RELIES ON THE PILOT FLAME TO PROVIDE AN ELECTRICAL PATH FOR THE SENSOR CURRENT.  THE FLAME COMPLETES A LOW RESISTANCE DC CURRENT, THE GUARDIAN HAS PROOF OF A STABLE PILOT FLAME AND UPON LOSS OF THE DC CURRENT (PILOT FLAME), THE GUARDIAN IMMEDIATELY ATTEMPTS TO RE-LIGHT THE PILOT FLAME BY IMPRESSING HIGH DC VOLTAGE PULSES ON THE ELECTRODE.  THE IGNITION ARC IS MAINTAINED CONTINUOUSLY IN ABSENCE OF FLAME.  IF THE PILOT IS RE-ESTABLISHED, THE GUARDIAN WILL GO BACK INTO THE FLAME MONITOR MODE


THE PILOT NOZZLE MUST HAVE A GOOD ELECTRICAL GROUND TO THE GUARDIAN PANEL TO ENSURE PROPER SENSING.  NORMALLY, THE GROUND PATH IS ACHIEVED THROUGH THE PILOT NOZZLE, MIXER, MIXER PIPING, FLAME ARRESTOR HOUSING, AND EXTERNAL PIPING AND CONDUIT.  IF A GOOD GROUND IS NOT ESTABLISHED THROUGH THE PIPING, ETC., IT MAY BE NECESSARY TO INSTALL A SEPARATE GROUNDING WIRE.

THE IGNITOR/SENSOR ELECTRODE MUST BE INSTALLED IN CLOSE PROXIMITY (1/8" TO 1/4") TO THE PILOT TO PROVIDE A SHORT ARC PATH DURING IGNITION AND ALSO BE IN THE PILOT FLAME AFTER FLAME IGNITION.  TRIAL AND ERROR MAY BE REQUIRED TO ACHIEVE PROPER LOCATION OF THE ELECTRODE.