33444-0-0414
Page 41
PILOT FLAME CHARACTERISTICS
MAIN BURNER FLAME CHARACTERISTICS
1
The pilot flame is blue and goes toward the main
burner and thermocouple horizontally. A slight yellow
tip on the flame is normal. The pilot flame must
surround and extend approximately 1/4in (6.4mm)
beyond the thermocouple, and must extend beyond
the first row toward the second row of main burner
ports.
1
On the main burner, the burning gas forms a primary flame
and a secondary flame. The primary flame is blue and about
3/16in (4.8mm) high. The secondary flame is very pale blue,
3in (76.2mm) to 5in (127mm) high. Dust in the combustion
air will produce an orange flame. Do not mistake it for an
improper yellow flame.
