APPR 184B: COMMERCIAL SYSTEMS; HEAT LOADS; PIPING (FOURTH-YEAR SERVICE)
Foothill College Course Outline of Record
|Hours:||30 lecture, 78 laboratory per quarter (108 total per quarter)|
|Prerequisite:||Per California Code of Regulations, this course is limited to students admitted to the Sheet Metal-Air Conditioning Service Mechanic Program.|
|Degree & Credit Status:||Degree-Applicable Credit Course|
|Grade Type:||Letter Grade (Request for Pass/No Pass)|
Student Learning Outcomes
- A successful student will be able to explain the following commercial heating methods: warm air, hydronic and heat pump.
- A successful student will be able to discuss the fundamental uses of heat pumps.
The student will be able to:
A. Describe various types of valves used in commercial systems, and their servicing.
B. Compare and evaluate methods of heating.
C. Discuss the fundamentals and uses of heat pumps.
A. Describe various types of valves used in commercial systems, and their servicing
1. Servicing commercial system components
a. Direct expansion evaporators
b. Condensing units
c. Water cooled condensers/water valves/cooling towers
d. Thermostatic expansion valves, two-temperature valves, hot gas bypass valves
e. Burnouts/servicing electrical circuits
f. Liquid lines/suction lines
2. Commercial systems heat loads and piping
3. Absorption units
4. Special application systems
B. Compare and evaluate methods of heating
1. Introduction to methods of heating
2. Electric resistance heating systems
3. Warm air heating equipment
4. Hydronic heating systems
5. Oil burning furnaces
6. Humidification equipment
7. Heat pumps
C. Discuss the fundamentals and uses of heat pumps
1. Heat pump fundamentals
2. Advanced heat pumps
A. Manipulation and troubleshooting of commercial HVAC system components
1. Practice efficient diagnostic sequences
2. Develop decision to repair or replace malfunctioning part
3. List sequence to safely disassemble system only as needed for repair or replacement
4. Practice use of tools and equipment for repairs, replacements, and maintenance tasks
5. Test to verify system operation and adjustments
Special Facilities and/or Equipment
Method(s) of Evaluation
A. Results of written quizzes and tests, and comprehensive written final examination
B. Shop participation
C. Assignments that may include outside readings, reports and worksheets
D. Maintenance of a workbook of student's daily work activities
Method(s) of Instruction
Representative Text(s) and Other Materials
Whitman, B., B. Johnson, J. Tomczyk, and E. Silberstein. Refrigeration and Air Conditioning Technology. Delmar, Cengage Learning, 2009.
International Training Institute for the Sheet Metal and Air Conditioning Industry. Service Work Lab Manual. IDI Multimedia, 2008.
NOTE: These are the standard Sheet Metal textbooks/workbooks used for this course. Although they may not be within 5 years of the required published date, they are the most current books used when teaching this course.
Types and/or Examples of Required Reading, Writing, and Outside of Class Assignments
A. An example of a reading assignment is to read Unit 25, "Special Refrigeration System Components," in the Refrigeration and Air Conditioning Technology text
B. An example of a written assignment is to calculate a commercial system heat load, including losses due to materials, condition and desired treatment of product, and space usage factors, as described in the Servicing Environmental Systems Book 4 text, Unit 11