Maricopa Community Colleges  HVA132   19956-19976 
Official Course Description: MCCCD Approval: 02/28/95
HVA132 19956-19976 L+L 3 Credit(s) 5 Period(s)
Heating Application and Safety
Basic heating and ventilating equipment, including performance measurement of heating and combustion equipment. Also, procedures used with gas-fired and electric heating equipment. Troubleshooting techniques, local gas and electric codes, and safety precautions. Prerequisites: HVA111 and HVA122.
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MCCCD Official Course Competencies:
 
HVA132   19956-19976 Heating Application and Safety
1. Describe the history of heating. (I)
2. Compare the characteristics of combustion gases. (II)
3. Repair gas-fired heating devices demonstrating appropriate safety procedures. (III)
4. Determine and adjust energy input for gas-fired furnaces, demonstrating appropriate safety procedures. (IV)
5. Describe safe venting techniques and equipment for gas furnaces. (V)
6. Identify environmental factors which impact comfort heating. (VI)
7. Diagnose problems and repair electric heaters, demonstrating appropriate safety procedures. (VII)
8. Assess and document the function and use of infrared for heating purposes. (VIII)
9. Describe the characteristics and functions of control components for gas-fired and electric heating devices. (IX)
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MCCCD Official Course Outline:
 
HVA132   19956-19976 Heating Application and Safety
    I. History of Heating
        A. Wood
        B. Coal
        C. Electric
        D. Gas
        E. Solar
        F. Other
      II. Heat Sources and Combustion Gases
          A. Heat sources
          B. Combustion
        III. Gas-Fired Heaters
            A. Gas orifices, burners, and flames
              1. Orifices
              2. Main gas burners
              3. Forced draft burners
              4. Pilot burners
              5. Electric ignition
              6. Flame types
            B. Heat exchangers
              1. Primary heat exchangers
              2. Secondary heat exchangers
            C. Troubleshooting and repair
            D. Safety
          IV. BTU Adjustments
              A. Meter timing
              B. Regulator adjustment
              C. Gas piping
              D. Orifice size
              E. Safety
            V. Venting
                A. Venting (general)
                B. Draft diverter
                C. Vent piping
                D. Vent design
                E. Power venting
                F. Automatic flue damper
                G. Safety
              VI. Environmental Factors
                  A. Ventilation air requirements
                  B. BTU comparisons
                  C. Temperature rise
                  D. Minimum code requirements
                VII. Electric Heaters
                    A. Types of equipment
                    B. Air flow
                    C. Types of installations
                    D. Troubleshooting and repair
                    E. Safety
                  VIII. Infrared Heating
                      A. Infrared theory
                      B. Space heating with gas-fired infrared heaters
                      C. Space heating at low air temperatures
                      D. Location of infrared heating units
                    IX. Basic Heating Controls/Characteristics/Functions
                        A. Thermostats
                        B. Power sources
                        C. Fan controls
                        D. Limit controls
                        E. Main gas valves
                        F. Pilot safety devices
                        G. Millivolt devices
                        H. Automatic ignition device
                        I. Furnace wiring
                        J. Electric furnace controls
                        K. Other
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