Jul 15, 2024  
2022-2023 College Catalog 
2022-2023 College Catalog [ARCHIVED CATALOG]

BCT 231 - Residential and Industrial HVAC IV

4 Credits, 6 Contact Hours
2 lecture periods 4 lab periods

Continuation of BCT 134 . Includes refrigerants and oil, compressors, metering devices, retail refrigeration systems, commercial hydronic systems, and steam systems.

Prerequisite(s): BCT 134  
  button image Prior Learning and link to PLA webpage

Course Learning Outcomes
  1. Perform a refrigerant leak detection procedure.
  2. Perform electrical troubleshooting checks on a single phase compressor.
  3. Identify various types of metering devices.
  4. Demonstrate the proper cleaning procedures for an ice machine.
  5. Explain the terms and concepts used when working with hot water heating and chilled water cooling systems.
  6. Describe the basic steam heating cycle.

  1. Refrigerants and Oils
    1. Refrigerant structure
    2. Refrigerant identification
    3. Refrigerant composition
    4. Refrigerant leaks
    5. Lubrication oils
    6. Oil and the refrigeration system
    7. Oil handling guidelines
    8. System conversion
  2. Compressors
    1. Role of compressors
    2. Open, hermetic, and semi hermetic compressors
    3. Types of compressors
    4. Capacity control of compressors
    5. Compressor electric drive motors
    6. Other compressor protection devices
    7. Reduced voltage motor starting
    8. Causes of compressor failure
    9. System checkout following compressor failure
    10. Compressor change out
  3. Metering Devices
    1. Basic operation
    2. Fixed metering devices
    3. Expansion valves
    4. Distributors
    5. TXV replacement
    6. Metering device problems
  4. Retail Refrigeration Systems
    1. Mechanical refrigeration systems
    2. Defrost systems
    3. Retail refrigeration equipment and fixtures
    4. Common refrigeration system controls
    5. Troubleshooting
  5. Commercial Hydronic Systems
    1. Water concept review
    2. Commercial hot water heating system components
    3. Chilled water cooling systems
    4. Chilled water system components
    5. Dual temperature water systems
    6. Commercial water piping systems
    7. Water system balancing
  6. Steam Systems
    1. Fundamentals and properties of water
    2. Steam cycle principles of operation
    3. Steam boilers, boiler controls, and accessories
    4. Valves
    5. Heat exchangers/converters
    6. Terminals
    7. Steam traps and strainers
    8. Troubleshooting steam traps
    9. Condensate return and feedwater system components

J.         Flash tanks

K.         Steam system piping

L          Steam and condensate pipe sizing

M.        Boiler blowdown and skimming

N.         Boiler water treatment