Start-Up
GMND-SVX01B-EN
29
Pilot Adjustment
1.
Remove the pilot adjustment cap.
2. Adjust the pilot screw to provide a properly sized
flame.
3. A proper pilot flame is a soft steady flame that
envelops 3/8- to 1/2-inch (9.5 to 12.7 mm) of the flame
sensor.
4. Replace the pilot adjustment cap.
Manifold Pressure Adjustment
If the manifold pressure requires adjustment, remove the
cap from the pressure regulator and turn the adjustment
screw clockwise to increase the pressure, or
counterclockwise to decrease the pressure. The adjusted
manifold pressure should not vary more than 10 percent
from the pressures specified in
Table 7, p. 28
.
Figure 19.
Main burner flames
LIFTING
(TOO MUCH AIR)
NORMAL
(HARD FLAME)
YELLOW TIPPING
(MARGINAL)
YELLOW FLAME
(TOO LITTLE AIR)
