This Lochinvar Burner, identified by the model code ORF BURNER PF/PB1002 NAT-F9, is a specialized component designed for use in heating systems. It operates on natural gas (NAT), with a specific fuel rating of F9. The burner is engineered to provide efficient and reliable combustion, ensuring optimal performance of the heating system. It features an Oxygen Reduction Factor (ORF) mechanism that helps to reduce the oxygen content in the combustion process, thereby improving efficiency and reducing emissions. The PF/PB1002 designation indicates that this burner is compatible with both Propane Fuel (PF) and Petroleum-Based (PB) systems rated at 1002 BTU/hr.