System control means to preheat waste oil for combustion

A waste oil burner feed system apparatus for preheating and then controlling the temperature of fuel oil for the atomization of the fuel oil in cooperation with a waste oil burner, comprising:

• a heat transfer assembly which includes a helical oil passageway through an elongated aluminum heat transfer body, which receives heat from a heating element operatively connected to it, and which distributes the heat to fuel oil within its helical oil passageway;
• an oil supply line in constant communication with the helical oil passageway in the heat transfer assembly and consequently in constant communication with an atomization nozzle which is securable at a terminal end of the heat transfer assembly;
• an oil expansion and pressure relief means which prevents expanding fuel oil from passing through the atomization nozzle on cold startup and prior to the fuel oil attaining a temperature of a pre-selected value, and which prevents fuel oil from passing through the atomization nozzle as a result of residual pressure exerted during the operation cycle after a shutdown, by means of associated configuration of the heat transfer assembly in cooperation with the atomization nozzle and an adjacent pressure relief line in constant communication therewith;
• and
• a system control means for cold startup to energize only the heating element, until the heat transfer assembly adjacent to the atomization nozzle attains a temperature of a pre-selected value, at which time said system control means energizes a fuel oil pump means, energizes an air blower, and energizes a means of igniting the atomized fuel oil exiting the aperture of the atomization nozzle.