GAS TRADE: UNIT 31 (5th ed. pub. 2016)

CSA Group's 2015 Gas Trade materials reference the Red Seal Program's trade outlines for your preparation to become a nationally recognized gasfitter. Please visit the Red Seal Program's website for more details.
Unit 31 - Valve trains and burners Purpose: A valve train is a manifold of components and piping that supplies fuel and air to a burner. Gas technicians/fitters must be familiar with the components that make up main fuel trains, air supply trains and pilot air/fuel trains. They must also be familiar with the burners themselves and understand how to install and maintain burners and gas trains so that gas-fired appliances operate safely and with maximum fuel efficiency. Gas technicians/fitters are also frequently called on to convert gas appliances from one fuel to another, which involves changes to the valve train and burner. Learning Objectives: At the end of this unit you will be able to:

• Identify valve train components.
• List the components used in specific valve trains.
• State the sequence of operation of major valve trains.
• Describe the operation of common gas flow controllers.
• Describe common types of burners.
• Describe maintenance and troubleshooting procedures for valve trains and burners.
• Describe procedures for converting large appliances to alternate fuels.