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• Air Pressure Adjuster: (figure1) Adjusts the air pressure going to the pre-heater block.
Should be adjusted between 12 PSI and 13PSI as indicated on the Air Pressure Gauge
on the burner for thorough burn of the waste oil.
Note: In order to insure proper air adjustment, air gauge must read 0 when burner
is cycled off or powered down.
• Oil Pressure Gauge: (figure1) Displays oil pressure at the burner. Adjustment at the Oil
Pump must be made to achieve oil pressure readings at the burner as indicated below.
Boiler Model
Oil Pressure Reading At
Burner
OWB-9 1 PSI
OWB-15 2 PSI
OWB-25 4 PSI
OWB-35 6 PSI
OWB-50 11 PSI
• Power Indicator: (figure1) Indicates when power is present at the burner.
• Run Indicator: (figure1) Indicates that the burner is ready for operation after the initial
pre-heat time of approx. 5 minutes from initial power up.
• Power Switch: (figure1) Switches power off and on to the burner.
Installation, Operation, And Service Instructions 9