IMR 4200 - Heating

Clock Hours: 50

Delivery Mode
on-ground

Course Description:
Students are introduced to the principles of gas furnaces and the safe operation of normal combustion. Students will learn various components of modern gas furnaces and their function under normal conditions and abnormal conditions. Students must demonstrate the ability to troubleshoot gas furnaces for electrical and mechanical problems that commonly occur. Students will be able to perform lab evaluations on gas furnaces with various efficiency’s and ignition systems. Students will learn to identify dangerous operating conditions to prevent carbon monoxide poisoning and proper drafting of the vent systems.

Student Learning Outcomes:
Students will attain the necessary skills to be able to:

Describe the basic components of a gas furnace
Describe various types of gas furnaces
Describe the different types of fuels used in gas heating
Discuss the principles of gas combustion
Explain the function of a gas pressure regulator
Define “gas valve”
Define “solenoid valve”
Describe a “diaphragm” valve
Describe a heat motor valve
Discuss the operation of automatic combination gas controls (valve)
Define “burner manifold”
Define “orifice”
Describe the operation of various types of burners
Describe the function of a heat exchanger
Describe the operation of the fan switch
Describe the functions of the limit switch
Explain the operation of a pilot burner
Describe various pilot devices
Describe intermittent pilot systems
Describe direct spark ignition
Explain hot surface ignition
Explain “flame rectification”
Describe high efficiency gas furnaces
Describe electronic ignition controls and integrated furnace controller’s
Explain the operation of a two stage furnace
Describe the operation of a modulating gas furnace
Discuss gas venting procedures
Discuss proper gas piping procedures
Use gas furnace wiring diagrams and troubleshooting flowcharts
Troubleshoot a thermocouple
Troubleshoot an intermittent spark ignition system
Discuss combustion efficiency
Discuss basic service call procedures for gas furnaces
Describe various components of a typical gas furnace
Describe the various sensing elements on a gas furnace with a thermocouple safety device
Analyze a gas furnace
Perform capacity calculations
Follow the control sequence of the various controls of a gas furnace
Check the venting of a typical gas furnace
Calculate CFM in a gas furnace using temperature rise