| Standard |
ACT 201 – Light
Commercial Air Conditioning Control Systems
Emphasizes the study of complex control systems on light commercial air conditioning systems. Topics include: pneumatic controls, electronic controls, electrical controls, mechanical controls, and safety.
|
Competency
Areas |
Hours |
|
|
Pneumatic Controls |
Class |
3 |
|
Electronic Controls |
D. Lab |
2 |
|
Electrical Controls |
P. Lab/O.B.I. |
0 |
|
Mechanical Controls |
Credit |
4 |
|
Safety |
|
|
|
Prerequisite/Corequisite: |
| Course Guide |
|
Competency |
After completing this
section, the student will: |
Hours | ||
|
Class |
D.Lab |
P.Lab/
O.B.I. | ||
PNEUMATIC
CONTROLS |
7 |
5 |
0 | |
|
Theory |
Discuss
several of the advantages to using pneumatic control systems. |
|
|
|
|
|
Draw
a working diagram of a basic pneumatic control system. |
|
|
|
|
|
|
|
| |
|
|
Discuss the difference between bleed controls and non-bleed type controllers. |
|
|
|
|
Application |
Install
an electric/pneumatic relay. |
|
|
|
|
|
Install a bleed thermostat. |
|
|
|
ELECTRONIC CONTROLS |
7 |
5 |
0 | |
|
Theory |
Discuss
several of the advantages to using electronic control systems. |
|
|
|
|
|
Explain
the wheatstone bridge concept. |
|
|
|
|
Draw an electric main bridge circuit. |
|
|
| |
|
Application |
Install
an electric main bridge circuit. |
|
|
|
|
Install an electronic insertion thermostat. |
|
|
| |
ELECTRICAL CONTROLS |
7 |
5 |
0 | |
|
Theory |
Explain
the difference between commercial electric control systems and residential
electric control systems. |
|
|
|
|
|
Draw a high voltage wiring diagram. |
|
|
|
|
Application |
Troubleshoot
a faulty compressor control circuit in a commercial unit. |
|
|
|
MECHANICAL CONTROLS |
7 |
5 |
0 | |
|
Theory |
Discuss
several of the more common mechanical controls used in commercial air
conditioning. |
|
|
|
|
|
Explain the operating principle behind the automatic expansion valve. |
|
|
|
|
|
Explain the difference between an automatic expansion valve and a thermostatic expansion valve. |
|
|
|
|
Application |
Install
an automatic expansion valve in an air conditioning system. |
|
|
|
|
Replace a clogged or broken capillary tube on an air conditioning system. |
|
|
| |
SAFETY |
2 |
0 |
0 | |
|
Theory |
Explain
the electrical hazards involved in working with control systems. |
|
|
|
|
Discuss the mechanical hazards involved in working with control systems. |
|
|
| |
| Suggested Resources |
Althouse, A. D., et al. (1988). Modern refrigeration & air
conditioning. South Holland, IL: Goodheart-Willcox.
http://www.goodheartwillcox.com/.
Haines, R. (1987). Control systems for heating, ventilating,
& air conditioning (4th ed.). New York: Van Nos Reinhold.
Herman, S. L., & Sparkman, B. L. (1986). Electricity & controls for heating,
ventilating, & air conditioning (4th ed.). Albany, NY: Delmar.
http://www.delmar.com/.
Langley, B. C. (1985). Control systems for air conditioning &
refrigeration. Englewood Cliffs, NJ: Prentice Hall. http://www.cefga.org/.
Langley, B. C. (1986). Cooling systems troubleshooting
handbook. Englewood Cliffs, NJ: Prentice Hall. http://www.cefga.org/.
Langley, B. C. (1988). Electric controls for refrigeration &
air conditioning (2nd ed.). Englewood Cliffs, NJ: Prentice Hall.
http://www.cefga.org/.
Long, W. (1985). Refrigeration & air conditioning:
Operation & analysis servicing. New York: Macmillan. http://www.macmillan.com/.
Miles, L. (1987). Refrigeration & air conditioning
(2nd ed.). Englewood Cliffs, NJ: Prentice Hall. http://www.cefga.org/.
Miller, R. (1983). Refrigeration and air conditioning
technology. New York: Bennett Il.
Miller, R. (1988). Electricity for heating, air conditioning
& refrigeration. San Diego, CA: Harcourt Brace Jovanovich. http://www.harcourt.com/.
National
Center for Construction Education and Research (latest edition). NCCER: Core
Curricula: Basic Communication
Skills. Englewood Cliffs, NJ: Prentice Hall. http://www.cefga.org/.
Prasad, M. (1983). Refrigeration & air conditioning.
New Delhi: Wiley Eastern, Ltd. http://www.wiley.com/.
Rudman, J. (1991). Air conditioning, heating &
refrigeration mechanic. Syosset, NY: National Learning.
Smith, R. E. (1987). Electricity for refrigeration, heating &
air conditioning. Albany, NY: Delmar. http://www.delmar.com/.
Swenson, S. D. (1990). Troubleshooting & servicing air
conditioning equipment. Troy, MI: Busn News.
Terminology of heating, ventilation, air
conditioning, & refrigeration. (1986). Atlanta: American Heating,
Refrigeration, & Air Engineering.
Whitman, W., & Johnson, W. (1991). Refrigeration & air conditioning
technology (2nd ed.). Albany, NY: Delmar. http://www.delmar.com/.