allumage constant

CONT: The high pressure atomizing type gun ... burner supplies oil to the atomizing nozzle at 689 to 2067 kPa. A blower is used to supply the air for combustion, and a damper or other adjustable means regulates the air supply at the burner. Ignition is usually established by a high voltage electric spark which may be intermittent, sometimes called constant ignition (on when the burner motor is on) or interrupted (on only to start combustion). Typically these burners fire into a combustion chamber in which negative draft is maintained.