Operator's Manual: Models CB-1750, CB-2500 & CB-3250
6-3
Starting the Burner
1.
Adjust the thermostat setting above room temperature to start the burner.
2.
Adjusting the Air Regulator:
As soon as the burner starts running, turn the knob on the air regulator clockwise to achieve
proper operating air pressure. Refer to the
Initial Adjustment Charts
.
NOTE:
If the safety reset on the primary control is activated and the burner stops running, see
Section 7 for further instructions on restarting your burner.
3.
Observing the Flame Length:
Visually inspect the flame length through the
observation port. Refer to Figure 6B for an illustration
of the desired flame length. The flame should extend
no more than one-half of the way down the combustion
chamber.
WARNING:
The observation port gets hot as the
burner fires. To avoid personal injury, always wear
heavy work gloves and safety glasses when opening the
port and viewing the flame.
CAUTION
WHEN OPENING INSPECTION PORT
PORT MAY BE HOT
PROTECT HANDS
WEAR SAFETY GOGGLES
KEEP FACE AWAY
OPEN PORT SLOWLY
Figure 6B - Flame Length Adjustment
Incorrect Flame Adjustment
(Air Pressure Too High):
• Ensure proper air pressure setting.
Correct Maximum Flame Adjustment
(Proper Oil and Air Pressure):
• Flame goes half of the way down the
combustion chamber.
• Flame does not touch back or walls of
combustion chamber.
4.
Check the flame length after the burner has fired for 15 minutes.
5.
Tighten the locking nut on the air regulator.
Incorrect Flame Adjustment
(Not Enough Combustion Air):
• Flame must not touch back or walls of
combustion chamber.
•
Increase combustion air by opening the
air band on the side of the burner.
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