HVAC Refrigeration Theory Class :

Designed for licensed technicians preparing for the Refrgeration Contractor License (Masters Equivalent).  Program will post on advanced theory, SHRAE standards and the Mass Refrigeration Code.

• Fundamentals of Refrigeration & Thermodynamics
  • Heat transfer methods (conduction, convection, radiation).
  • Pressure-temperature relationships (charts). 
  • States of matter and phase changes (evaporation, condensation).
  • Calculating heat load and heat content.
• The Vapor Compression Cycle
  • Detailed operation of the four main components: Compressor, Condenser, Metering Device, Evaporator.
  • Understanding high and low-pressure sides of the system.
  • Refrigerant states: Superheat and subcooling.
  • Refrigerant piping and piping techniques.
• Components and Accessories
  • Compressor types (reciprocating, scroll, rotary).
  • Condenser and evaporator design and efficiency.
  • Metering devices (TEV, capillary tube).
  • System accessories (filter driers, accumulators, sight glasses).
• Refrigerants and Safety
  • EPA Section 608 regulations and certification preparation.
  • Refrigerant types, handling, recovery, recycling, and reclaiming.
  • Safety protocols for pressurized systems and electrical systems.
• System Diagnostics and Troubleshooting
  • Interpreting temperature and pressure readings to determine system performance.
  • Identifying airflow issues, restrictions, and improper charging.
  • Electrical troubleshooting (relays, controls, motors).
• Advanced Applications
  • High, medium, and low-temperature applications.
  • Advanced refrigeration cycle analysis using Pressure/Enthalpy 
    

Approved school by the MA Board of State Examiners of Plumbers and Gas Fitters.

GI Bill® Benefits Approved

If you are a Veteran or other eligible beneficiary, please provide a Certificate of Eligibility (VA form 22-1990) or Statement of Benefit prior to enrollment.

Requirements are subject to change at any time by the State of Massachusetts.