© 2021 Carrier
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APPENDIX No 2
Proper position of the SureFire II™ SP-32 and SP-48 Pilots on burners
Appendix shows a sample of typical positions of gas pilots on two types of burners.
Gas Igniter operating as an intermittent (light-off) on a sample single gun main burner, oil or gas fired, vertical or
horizontal mounting.
The pilot air tube tip can reach the swirler or can be placed before it. Pilot tip cannot extend beyond the swirler plane.
Fig. B
Typical for refinery, petrochem and industrial heaters - shows position of SP-32 and SP-48 Gas Igniter operating
as a continuous pilot on a sample main burner, with gas spuds and central oil or gas gun, vertical mounting.
The pilot air tube tip can be mounted in the throat or in the swirler. Pilot tip cannot extend beyond the heater lining or
swirler plane and has to be at least 150 mm away from the main burner nozzle flame.
WARNING: PILOT TIP CANNOT BE MOUNTED IN MAIN BURNER FLAME. THE
DISTANCE SHOULD BE AT LEAST 150 MM FROM THE FUEL CONE. PILOT TIP
CANNOT EXTEND BEYOND THE HEATER LINING OR BURNER THROAT.
WARNING: IN CASE OF ANY DOUBTS CONCERNING THE PILOT POSITION ON
A BURNER, CONSULT PILOT AND MAIN BURNER MANUFACTURERS.
