This course addresses fundamental principles of heat theory and gas laws as they pertain to refrigeration systems. It provides an overview of commercial package units and examines the roles of fresh air mixing, variable air volume, and variable refrigerant flow. The course includes the operation of commercial walk-in coolers and freezers, commercial ice machines, air conditioners, and heat pumps, as well as accessory components and piping methods for installation and maintenance. Safety is emphasized throughout the course.
Prerequisites
HVA 115 with a grade of “C” or higher or instructor approval
1. Identify commercial packaged units, blowers, and fans, and describe their basic functions within commercial air conditioning systems.
2. Outline standard installation procedures for commercial HVAC units, including essential steps for safe and correct setup.
3. Explain the basic principles of air mixing and airflow and describe how they affect system performance and indoor comfort.
4. Define and explain variable refrigerant flow (VRF) and describe its purpose and applications in commercial HVAC systems.
5. Identify and describe common HVAC piping methods used for refrigerant, condensate, and water lines.
6. Interpret basic commercial HVAC diagrams and system layouts to understand how major components work together.
7. Evaluate commercial air conditioning system operation using standard performance checks and observations.