Gas Trade: Unit 26 - Flame safeguard
CSA Group's 2019 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.
This unit covers typical flame-safeguard controls on industrial equipment, commercial equipment, gas-fired burners, and associated equipment that manage burner operation. These equipment includes flame detectors, operating and safety devices that stop and start the burner, valves, sequencing relays, and auxiliary controls for burner safety control systems.
The gas technician/fitter must be familiar with the functions performed by the flame safeguard system and the types of associated controls that manage safe burner operation.
The features of flame safeguard systems for industrial and commercial equipment differ somewhat from those on residential equipment. Differing flame-safeguard system functions on larger equipment include pre-purge sequencing, post-purge sequencing and timing requirements as larger equipment require a shorter trial for ignition periods and shorter flame failure response timings.
At the end of this unit you will be able to:
• Describe flame characteristics and the sensors that detect flame;
• Identify different types of pilots;
• Identify different types of flame safeguard controls;
• Troubleshoot and service flame safeguard systems;
• Describe code requirements relating to flame safeguard; and
• Look up and identify features from manufacturer's specifications.
The Training materials have been revised to include the following changes throughout the training units:
▪ Updated language to enhance student understanding
▪ Revised references and links to the most current legislation
▪ Revisions include new technologies used in the industry
▪ Updated look and feel