Product Manual

Section 12 - Flame Adjustment
30
Lift the inspection port cover on the front of the combustion chamber to observe the flame.
The flame tips should extend 3/4 of the way into the combustion chamber. When the unit is
adjusted properly the ash inside the chamber will be white to off white.
Flame tips touching the target brick (end of the chamber) will cause combustion chamber
damage.This condition may be caused by a worn nozzle, or excess burner fuel pressure.
When this condition exists, the ash in the chamber will
be brown to black.
Flame Adjustment - Visual
Flame is over-fired (Fig. 11).
s Dark yellow, to orange in color.
s The flame is hitting the walls, filling the chamber
with a smokey
flame. Correct immediately or chamber may be
damaged.
s Decrease fuel pressure, and adjust combustion air
baffle. Air pressure
may also need to be adjusted.
Problem: Too large of a flame, dark yellow in color.
1. Too much fuel pressure.
2. Not enough combustion air.
3. Not enough atomizing air pressure.
4. Ash inside the chamber is dark brown to sooty
black in color.
Flame is under-fired (Fig. 12).
s The flame is like a blow torch.
s Light yellow, to white in color.
s Flame is too short.
s Check to see if pre-heater block is hot.
s Check air PSI, it may be too high. Adjust in 1 LB.
increments.
s Oil pressure and the combustion air baffle may
need adjustment.
BAD FLAME
The flame is too big, creating an over-
fire condition
BAD FLAME
The flame is too short
GOOD FLAME
The flame length is approximately 3/4
of the chamber
Figure 11
Figure 12
Figure 13
NOTE: ALWAYS WEAR EYE, FACE AND BREATHING PROTECTION AND
PROTECTIVE CLOTHING WHEN INSPECTING OR ADJUSTING FLAME.
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