Lanair MXB360 - Manual (Page 30)

QUESTIONS?... Contact Customer Service at 1-800-753-1601 M-F 8:00 am- 4:30 pm CST 30
Section 17 - Flame Adjustment
Flame Adjustment - Visual
Flame is over-fired (Fig. 20).
• Dark yellow, to orange in color.
• The flame is hitting the walls, filling the chamber with a smokey
flame. Correct immediately or chamber may be damaged.
• 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. 21).
• The flame is like a blow torch.
• Light yellow, to white in color.
• Flame is too short.
• Check to see if pre-heater block is hot.
• Check air PSI, it may be too high. Adjust in 1 LB. increments.
• Oil pressure and the combustion air baffle may need adjustment.
Problem: Too small a flame, similar to a blowtorch.
1. Too much atomizing air pressure.
2. Too much combustion air pressure.
3. Not enough fuel pressure.
Solutions:
1. Correct fuel pressure setting.
2. Flame tips reach 3/4 of the way into the chamber.
3. Flame has slightly yellow/orange tips.
4. No black smoke coming from the chimney.
5. Ash inside the chamber is white to off white in color.
Flame is full (Fig. 22).
• Bright yellow in color.
• Flame extends 3/4 into the chamber.
• Flame is not impinging on the chamber walls.
If you need assistance with flame adjustment, please call Lanair's
Parts and Service Department.
CHECK FLAME DAILY (see page 31). ADJUST ACCORDINGLY
!
DO NOT OVER FIRE YOUR BOILER. IMMEDIATELY ADJUST THE BURNER TO THE PROPER
FLAME LENGTH TO PREVENT DAMAGE TO YOUR BOILER.
!
Figure 20
Figure 21
Figure 22
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