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13
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.
Fig. A
Typical for power & utility boilers, industrial heaters - shows position of
SP-32
and
SP-48
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.
Atomized fuel cone
Incorrect position
too close to flame
Correct position
SP-32, -48 Gas Pilot
Gas spuds
Oil or gas central gun
FIGURE
B
Atomized fuel cone
Incorrect position
too close to flame
Correct position
SP-32, -48 Gas Igniter
Oil or gas gun
FIGURE
A
