La. Admin. Code tit. 28 § CXXVII-703

Current through Register Vol. 50, No. 11, November 20, 2024

Section CXXVII-703 - Level Two

A. Module 03201-01. Air Distribution Systems

1. Describe the airflow and pressures in a basic forced-air distribution system.

2. Explain the differences between propeller and centrifugal fans and blowers.

3. Identify the various types of duct systems and explain why and where each type is used.

4. Demonstrate or explain the installation of metal, fiberboard, and flexible duct.

5. Demonstrate or explain the installation of fittings and transitions used in duct systems.

6. Demonstrate or explain the use and installation of diffusers, registers, and grilles used in duct systems.

7. Demonstrate or explain the use and installation of dampers used in duct systems.

8. Demonstrate or explain the use and installation of insulation and vapor barriers used in duct systems.

9. Identify the instruments used to make measurements in air systems and explain the use of each instrument.

10. Make basic temperature, air pressure, and velocity measurements in an air distribution system.

B. Module 03202-01. Chimneys, Vents, and Flues

1. Describe the principles of combustion and explain complete and incomplete combustion.

2. Describe the content of flue gas and explain how it is vented.

3. Identify the components of a furnace vent system.

4. Describe how to select and install a vent system.

5. Perform the adjustments necessary to achieve proper combustion in a gas furnace.

6. Describe the techniques for venting different types of furnaces.

7. Explain the various draft control devices used with natural-draft furnaces.

C. Module 03203-01. Maintenance Skills for the Service Technician

1. Identify the types of threaded and non-threaded fasteners and explain their use.

2. Install threaded and non-threaded fasteners.

3. Identify the types of gaskets, packings, and seals and explain their use.

4. Remove and install gaskets, packings, and seals.

5. Identify the types of lubricants and explain their use.

6. Use lubrication equipment to lubricate motor bearings.

7. Identify the types of belt drives and explain their use.

8. Demonstrate and/or explain procedures used to install or adjust a belt drive.

9. Identify the types of couplings and explain their use.

10. Demonstrate and/or explain procedures used to remove, install, and align couplings.

11. Identify the types of bearings and explain their use.

12. Explain causes of bearing failures.

13. Demonstrate and/or explain procedures used to remove and install bearings.

14. Perform basic preventive maintenance inspection and cleaning procedures.

15. List work and personal habits that contribute to good customer relations.

16. Identify steps in the handling of a typical service call that will contribute to good customer relations.

17. Legibly fill out forms used for installation and service calls.

D. Module 03204-01. Alternating Current

1. Describe the operation of various types of transformers.

2. Explain how alternating current is developed and draw a sine wave.

3. Identify single-phase and three-phase wiring arrangements.

4. Explain how phase shift occurs in inductors and capacitors.

5. Describe the types of capacitors and their applications.

6. Explain the operation of single-phase and three-phase induction motors.

7. Identify the various types of single-phase motors and their applications.

8. Use a wattmeter, megger, capacitor analyzer, and chart recorder.

9. Test inductors and capacitors using an ohmmeter.

10. State and demonstrate the safety precautions that must be followed when working with electrical equipment.

E. Module 03205-01. Basic Electronics

1. Explain the basic theory of electronics and semiconductors.

2. Explain how various semiconductor devices such as diodes, LEDs, and photo diodes work, and how they are used in power and control circuits.

3. Identify different types of resistors and explain how their resistance values can be determined.

4. Describe the operation and function of thermistors and cad cells.

5. Test semiconductor components.

6. Identify the connectors on a personal computer.

F. Module 03206-01. Electric Heating

1. Describe and explain the basic operation of a fan coil equipped with electric heating elements.

2. Identify and describe the functions of major components of a fan coil equipped with electric heating elements.

3. Identify and describe the functions of electric heating controls.

4. Measure resistances and check components and controls for operation and safety.

5. Determine the cubic feet per minute (cfm) using the temperature rise method.

6. Describe and explain the basic operation of other electric heating systems.

G. Module 03207-01. Introduction to Control Circuit Troubleshooting

1. Explain the function of a thermostat in an HVAC system.

2. Describe different types of thermostats and explain how they are used.

3. Demonstrate the correct installation and adjustment of a thermostat using proper siting and wiring techniques.

4. Explain the basic principles applicable to all control systems.

5. Identify the various types of electromechanical, electronic, and pneumatic HVAC controls, and explain their function and operation.

6. Describe a systematic approach for electrical troubleshooting of HVAC equipment and components.

7. Recognize and use equipment manufacturer's troubleshooting aids to troubleshoot HVAC equipment.

8. Exhibit competence in isolating electrical problems to faulty power distribution, load, or control circuits.

9. Identify the service instruments needed to troubleshoot HVAC electrical equipment.

10. Make electrical troubleshooting checks and measurements on circuits and components common to all HVAC equipment.

H. Module 03208-01. Accessories and Optional Equipment

1. Explain how heat transfer by conduction, convection, radiation, and evaporation relates to human comfort.

2. Explain why it is important to control humidity in a building.

3. Recognize the various kinds of humidifiers used with HVAC systems and explain why each is used.

4. Demonstrate or describe how to install and service the humidifiers used in HVAC systems.

5. Recognize the kinds of air filters used with HVAC systems and explain why each is used.

6. Demonstrate or describe how to install and service the filters used in HVAC systems.

7. Use a manometer or differential pressure gauge to measure the friction loss of an air filter.

8. Identify accessories commonly used with air conditioning systems to improve indoor air quality and reduce energy cost, and explain the function of each.

I. Module 03209-01. Metering Devices

1. Explain the function of metering devices.

2. Describe the operation of selected metering devices and expansion valves.

3. Identify types of thermal expansion valves (TXVs).

4. Describe problems associated with replacement of TXVs.

5. Describe the procedure for installing and adjusting selected TXVs.

J. Module 03210-01. Compressors

1. Identify the different kinds of compressors.

2. Demonstrate or describe the mechanical operation for each type of compressor.

3. Demonstrate or explain compressor lubrication methods.

4. Demonstrate or explain methods used to control compressor capacity.

5. Demonstrate or describe how compressor protection devices operate.

6. Perform the common procedures used when field servicing open and semi-hermetic compressors:

a. shaft seal removal and installation;

b. valve plate removal and installation;

c. unloader adjustment.

7. Demonstrate the procedures used to identify system problems that cause compressor failures.

8. Demonstrate the system checkout procedure performed following a compressor failure.

9. Demonstrate or describe the procedures used to remove and install a compressor.

10. Demonstrate or describe the procedures used to clean up a system after a compressor burnout.

K. Module 03211-01. Heat Pumps

1. Describe the principles of reverse-cycle heating.

2. Identify heat pumps by type and general classification.

3. List the components of heat pump systems.

4. Demonstrate heat pump installation and service procedures.

5. Identify and install refrigerant circuit accessories commonly associated with heat pumps.

6. Analyze a heat pump control circuit.

L. Module 03212-01. Leak Detection, Evacuation, Recovery, and Charging

1. Identify the common types of leak detectors and explain how each is used.

2. Demonstrate skill in performing leak detection tests.

3. Identify the service equipment used for evacuating a system and explain why each item of equipment is used.

4. Demonstrate skill in performing system evacuation and dehydration.

5. Identify the service equipment used for recovering refrigerant from a system and for recycling the recovered refrigerant, and explain why each item of equipment is used.

6. Demonstrate skill in performing refrigerant recovery.

7. Demonstrate or explain how to use a recycle unit.

8. Identify the service equipment used for charging refrigerant into a system, and explain why each item of equipment is used.

9. Demonstrate skill in charging refrigerant into a system.

La. Admin. Code tit. 28, § CXXVII-703

Promulgated by the Board of Elementary and Secondary Education, LR 32:1214 (July 2006).

AUTHORITY NOTE: Promulgated in accordance with R.S. 17:6(A)(10).