Furnace Fundamentals

Introduction * Identify the major parts o f a furnace. * Explain basically how a furnace produces heat. * Identify the major furnace systems. Combustion and Heat Transfer * State the requirements for combustion. * Identify three types of heat transfer. * Describe how heat transfer occurs in a furnace. Fuel Systems * Describe the major parts of a typical gas supply system. * Describe the major parts of a typical oil supply system. Burners * Describe the major parts and basic operating principles of a raw gas burner. * Describe the major parts and basic operating principles of a pre-mix burner. * Describe the major parts and basic operating principles of an oil burner. * Describe the major parts and basic operating principles of a combination burner Air Flow, Part 1 * Define the terms “draft” and “excess air.” * Describe the basic operating principles of a natural draft furnace. * Identify problems related to improper air flow. * Explain how draft and excess air are controlled in a natural draft furnace. Air Flow, Part 2 * Describe the major parts and basic operating principles of a forced draft furnace. Describe the basic operation of an air heater. * Describe the basic operating principles of a balanced draft furnace. Process Fluid Flow * Explain how process fluid circulates in a furnace. * Identify problems associated with improper process fluid flow.