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Table of Contents – HVACR Troubleshooting Fundamentals:
Refrigeration & Air Flow Systems
Training Package for Instructors & Service Managers

TABLE OF CONTENTS

 SECTION ONE: REFRIGERATION FUNDAMENTALS

 

Unit 1      Heat Energy……………………

 

                                    Radiation…    Conduction…    Convection…    The British

                                    Thermal Unit…    Understanding Sensible & Latent Heat

 

 

Unit 2      Refrigeration System Components and              

                Accessories ………………………

 

                                    Compressors…    Condensers…    Evaporators…    Metering

                                    Devices…    Filter Driers…    Heat Exchangers….Suction

                                    Line Accumulators…    Liquid Line Receivers

 

 

Unit 3      The Refrigeration Cycle……………

 

                                    Simplified Refrigeration system…    Refrigerant Temperature

                                    & Pressure…    High Pressure and Low Pressure In Refrigeration

                                    Systems…    Purpose of Evacuation In Refrigeration Systems

 

 

 

Unit 4      Superheat & Subcooling…………….

 

                                    The 70-Pound Rule…    The 30- Degree Rule…    Refrigerants and     

                                    Oils, Comparing R-22 & R-410A…   Refrigerant Flammability

                                    and Toxicity...    Simplifying Superheat In Refrigeration

                                    Systems…    Questions and Answers About Superheat…                                 

                                    Employing Superheat In A Diagnosis…    Manufacturer’s

                                    Charging Charts…    Evaporator Superheat…. Total Superheat In

                                    A Refrigeration System…    Discharge Superheat…    Subcooling

                                    In Refrigeration systems…  Fundamental Diagnostics Related To

                                    Refrigeration System Pressures 

 

 

Unit 5      Evacuation and Dehydration………….

 

                                    Vacuum and Pressure…    Microns & Micron Gauges…  Vacuum

                                    Pump Maintenance & Operation 

 

 

Unit 6      Accessing Refrigeration Systems For

                Refrigerant Recovery & Evacuation…..

 

                                    Accessing Small Refrigeration Systems…    Schrader Valves…  

                                    Schrader Valve Core Removal Tools…    Quick Connect

                                    Fittings…    Compressor Mounted Access Valves…    Liquid First

                                    Refrigerant Recovery Procedures…    Manifold Gauge Set

                                    Fundamentals…    Refrigerant Recovery Drum Safety…                        

                                    Push/Pull Refrigerant Recovery…    Non-Condensable Materials

                                    and Contaminants…    Cooling A Recovery Tank…    System                                     

                                    Evacuation & Removing Moisture  

 

 

SECTION TWO: AIR FLOW & HVACR EQUIPMENT

EVALUATION

 

 

Unit 7      Properties of Air & Fundamental Air Flow

                Measurements……………………….

 

                                    Air Density & Specific Heat….    The 1.08 and 4.5 Multiplier        

                                    Factors….    Air Flow Measurement: CFM & FPM….

                                    Using FPM To Calculate CFM….   Air Flow Calculations & Load 

                                    Estimating      

 

 

Unit 8      Psychrometric Principles…………….

 

                                    Fundamentals of Psychrometrics, DB WB & RH….    Structure of

                                    the Psychrometric Chart….    Calculating RH & Wet Bulb                            

                                    Depression….     Dew Point….    Common Properties of Air

                                    Formulas….        

 

 

Unit 9      Supply & Return Air System  

                Fundamentals.………………………

 

                                   Air Flow & TD Through A Free Blowing DX Coil….    Air Flow  

                                   Through A Forced Air Condenser….    Air Flow Fundamentals of

                                   Ducted Systems….    Supply Duct Systems & TEL….    Return

                                   Duct Systems & TEL         

 

 

Unit 10    HVACR System Air Flow System                 

                Evaluation……………………………

 

                                     Supply Air Flow Configurations….    Return Air Flow….

                                     Manufacturer’s Blower Performance Data….    Static Pressure                          

                                     Testing….    Dry Bulb & Wet Bulb Temperature

                                     Measurements….    Temperature Split….    Blower Door

                                     Testing….    Duct Leakage Testing….    

 

 

         Appendix A   Troubleshooting Problems………..