HAC 3030 - Gas Heat

1. Safety
   1. Demonstrate an understanding of HVAC related safety issues
   2. Describe general safety rules including but not limited to ladder safety, electrical safety, proper lifting techniques, and combustion gas safety.
2. Principles of Combustion
   1. Discuss the combustion triangle
   2. Discuss the combustion requirements of Natural gas, L.P. gas, and fuel oil.
   3. Discuss complete and incomplete combustion
   4. Discuss combustion air requirements of Natural gas, L.P. gas, and fuel oil.
   5. Discuss flame characteristics.
   6. Discuss standard furnace and condensing furnace operation and venting.
3. Furnace components
   1. Understand the different types of ignition
   2. Understand gas valve types and functions.
   3. Understand induced and forced draft systems.
   4. Understand the sequence of operation for furnaces.
   5. Understand the difference in single fire, two stage, and modulating furnaces.
4. Gas furnace Installation
   1. Discuss sizing gas furnaces.
   2. Discuss code requirements
   3. Understand gas pipe sizing, planning, and installation
   4. Understand venting requirements for gas appliances.
   5. Understand wiring requirements for gas appliances.
   6. Discuss testing / startup of gas furnaces.
5. Servicing Gas furnaces
   1. Discuss measuring gas pressures
   2. Discuss testing for proper draft
   3. Discuss testing ignition systems
   4. Discuss safety switches.
   5. Discuss the temperature rise.
   6. Discuss cracked heat exchangers and replacement