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| Preface | |
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| Acknowledgments | |
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| Safety Precautions | |
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| Tools and Equipment | |
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| Electricity | |
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| Theory Lesson: Electricity | |
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| Theory Lesson: Series Circuits | |
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| Wiring Three Loads (Light Bulbs) and a Switch in a Series Circuit | |
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| Wiring Two Loads (Light Bulbs) in Series Using a Switch to Turn Them Off and On, Keeping a Third Light in the Circuit On Continuously | |
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| Theory Lesson: Parallel Circuits | |
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| Wiring Three Loads (Light Bulbs) in a Parallel Circuit and Using a Single-Pole, Single-Throw Switch to Control the Circuit | |
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| Wiring Three Loads (Light Bulbs) in Parallel Using a Single-Pole, Single-Throw Switch to Turn Two Light Bulbs Off and Leave One Light Bulb On All the Time | |
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| Theory Lesson: Series-Parallel Circuits | |
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| Wiring a Series-Parallel Circuit with a Single-Pole, Single-Throw Switch Controlling the Total Circuit, Where Three Loads (Light Bulbs) Are Wired in Parallel and Three Loads (Light Bulbs) Are Wired in Series | |
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| Wiring a Series-Parallel Circuit with a Single-Pole, Single-Throw Switch Controlling the Series Circuit, Where Three Loads (Light Bulbs) Are Wired in Parallel | |
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| Theory Lesson: Electrical Meters and Usage | |
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| Using a Voltmeter to Measure Voltage and Record Voltage Drop in a Series Circuit | |
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| Using a Voltmeter to Measure Voltage and Record Voltage Drop in a Parallel Circuit | |
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| Using a Clamp-On Ammeter to Measure Current in a Series Circuit | |
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| Using a Clamp-On Ammeter to Measure Amperage in a Parallel Circuit | |
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| Taking an In-Line Amperage Reading with a VOM | |
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| Checking the Resistance of a Series Circuit with an Ohmmeter | |
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| Using a VOM or OHM Meter to Measure Resistance and Calculate Resistance in a Parallel Circuit | |
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| Electrical Controls | |
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| Theory Lesson: Transformers | |
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| Connect a Step-Down Transformer to a Two-Pole Relay Contactor | |
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| Evaluating the Condition of a Transformer with an Ohmmeter | |
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| Evaluating a Transformer's Primary and Secondary Voltages | |
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| Measuring the Volt-Amperes of a Control Transformer | |
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| Theory Lesson: Relay Contactor and General-Purpose Relay | |
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| Wiring a Relay Contactor into a Circuit | |
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| Checking a Relay Contactor with a Voltmeter | |
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| Checking a Relay Contactor with an Ohmmeter | |
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| Theory Lesson: General-Purpose Relays | |
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| Using a General Purpose Relay to Control Two Loads in a Circuit | |
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| Theory Lesson: Current Starting Relays | |
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| Wiring a Current Relay into a Fractional Horsepower Hermetic Compressor Circuit | |
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| Checking the Performance of a Current Relay in a Motor Circuit | |
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| Theory Lesson: Positive Temperature Coefficient Start Devices | |
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| Installing a PTC Device into a PSC Motor Circuit | |
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| Testing a PTC Device In and Out of a Motor Circuit | |
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| Theory Lesson: Overloads | |
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| Checking an External Line-Breaking Overload Protector | |
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| Testing the Operation of a Two-Wire Compressor Overload Protector | |
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| Theory Lesson: High- and Low-Pressure Switches | |
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| Checking Calibration and Switch Activation of an Adjustable Low-Pressure Control | |
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| Checking Calibration and Switch Activation of an Adjustable High-Pressure Control | |
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| Calculating and Setting Cut-in, Differential, and Cutout Pressures for Low-Pressure Control Used for Low-Charge Protection | |
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| Calculating and Setting Cut-in, Differential, and Cut-out Pressures for a High-Pressure Control | |
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| Water-Cooled Condenser, High-Pressure Control Calculation and Settings | |
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| Theory Lesson: Oil Pressure Safety Switch | |
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| Oil Pressure Safety Control Performance Check in an Operational System | |
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| Checking the Differential Function of an Oil Pressure Safety Switch | |
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| Theory Lesson: Heating and Cooling Thermostats | |
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| Wiring a Low-Voltage Single-Stage Heating and Single-Stage Cooling Thermostat | |
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| Checking the Control Operation of a Single-Stage Heating and Cooling Thermostat | |
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| Checking Internal Switching Functions of a Honeywell Heating and Cooling Thermostat | |
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| Theory Lesson: Capacitors | |
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| Using an Ohmmeter to Check Run and Start Capacitors | |
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| Refrigeration Fundamentals | |
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| Theory Lesson: ACR Tubing | |
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| Using a Tube Cutter | |
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| Swaging Copper Tubing | |
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| Flaring Copper Tubing | |
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| Theory Lesson: Air-Acetylene | |
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| Setting Up an Air-Acetylene Outfit | |
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| Theory Lesson: Oxyacetylene Outfits | |
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| Setting Up an Oxyacetylene Outfit | |
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| Lighting an Oxyacetylene Torch Outfit | |
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| Theory Lesson: Proper Soldering Techniques | |
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| Proper Soldering and Brazing Techniques | |
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| Theory Lesson: The Vapor Compression Refrigeration Cycle | |
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| Learning the Vapor Compression Refrigeration Cycle | |
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| Interpreting a Pressure-Temperature Chart | |
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| Theory Lesson: Refrigeration Manifold Gages | |
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| Calibrating the Gage Manifold | |
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| Interrupting Refrigerant Gage Manifold Readings | |
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| Learning Valve Stem Service Valve Operation | |
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| Using Manifold Gages to Interpret Sealed System Pressures | |
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| Using a System's High-Side Pressure and Valve Stem Service Valves to Purge Air from the Manifold Gage | |
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| Proper Procedures for Installing Manifold Gages and Purging Air from Hoses on a Sealed System Equipped with Schrader Valves | |
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| Theory Lesson: Refrigerant Recovery, Recycling, and Reclaim | |
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| Recovering Refrigerant from a System with an Operating Compressor | |
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| Active Method of Recovery - Recovering Refrigerant from a System with a Self-Contained Recovery Unit | |
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| System-Dependent Recovery from a Small Appliance | |
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| Theory Lesson: Leak-Testing Refrigerant Sealed Systems | |
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| Using Nitrogen and R-22 for Leak-Checking a CFC or HCFC Sealed System | |
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| Using Nitrogen to Check for Leaks in an HFC Sealed System | |
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| Theory Lesson: Evacuation | |
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| Draining and Replacing Vacuum Pump Oil | |
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| Evacuating an Air Conditioning System | |
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| Evacuating a Sealed System That Has Valve Stem Service Valves | |
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| Multiple Evacuation of a Sealed System | |
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| Theory Lesson: Sealed System Charging with Azeotropic and Near-Azeotropic Refrigerants | |
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| Measuring the Dry-Bulb and Wet-Bulb Temperature and Relative Humidity of Air Using a Sling Psychrometer | |
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| Liquid Charging a Split System Air Conditioning Unit Using Charging Scales | |
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| Liquid Charging Central Air Conditioning System With Near-Azeotropic-Zeotropic Refrigerant Blends (R-410A/Puron) | |
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| Adjusting the Charge of a Central Air Conditioning System by Adding Refrigerant Vapor | |
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| Theory Lesson: Evaporators and Evaporator Superheat | |
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| Measuring the Amount of Superheat on an Air Conditioner or Heat Pump Evaporator Coil | |
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| Measuring the Amount of Evaporator Superheat of an Air Conditioning or Heat Pump System Under Different Load Conditions | |
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| Checking an Evaporator for Flood-Back Using the Hand-Touch Method | |
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| Evaluating Evaporator Efficiency | |
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| Theory Lesson: Superheat and Sub-cooling Calculations for Systems with Near-Azeotropic (Zeotropic) Refrigerant Blends | |
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| Measuring Superheat of a Sealed System with a Near-Azeotropic (Zeotropic) Refrigerant Blend | |
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| Using Manufacturer's Charging Chart to Check or Charge an Air Conditioning or Heat Pump Unit | |
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| Using the Sub-cool Method of Charging R-22 Air Conditioning or Heat Pump Equipment Supplied with a Thermostatic Expansion Device (TXV) | |
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| Theory Lesson: The "Big Question"-Charging and Checking the Charge of Air Conditioning and Heat Pump Equipment | |
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| Theory Lesson: Procedures for Using an R-22 Superheat/Sub-cooling Charging Calculator | |
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| Charging an R-22 Air Conditioning or Heat Pump by Using a Superheat/Sub-cooling Calculator-Superheat Method | |
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| Charging an R-22 Air Conditioning or Heat Pump by Using a Superheat/Sub-cooling Calculator-Sub-cool Method | |
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| Checking for Proper Airflow Range of a Split-System Air Conditioner or Heat Pump Using a Charging Calculator | |
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| Theory Lesson: Procedures for Using an R-410A Superheat/Sub-cooling Charging Calculator | |
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| Charging an R-410A Air Conditioning or Heat Pump by Using a Superheat/Sub-cooling Calculator-Superheat Method | |
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| Charging an R-410A Air Conditioning or Heat Pump by Using a Superheat/Sub-cooling Calculator-Sub-cool Method | |
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| Checking for Proper Airflow Range of a Split-System Air Conditioner or Heat Pump Using an R-410A Charging Calculator | |
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| Theory Lesson: Charging Procedures in the Field | |
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| Field Charging or Checking the Charge of an Air Conditioner or Heat Pump System with a Fixed-Bore Metering Device | |
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| Field Charging or Checking the Charge of an Air Conditioner or Heat Pump System with a TXV Metering Device | |
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| Theory Lesson: Electric Motors | |
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| Theory Lesson: Air Conditioning and Heat Pump Compressors and Motor Troubleshooting | |
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| Checking Split-Phase Compressor Motor Windings | |
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| Identifying Common, Run, and Start Terminals of a Split-Phase Compressor Motor | |
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| Checking a Compressor for Open Motor Windings | |
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| Checking a Compressor for a Shorted Motor Winding | |
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| Short-to-Ground Compressor Motor Test | |
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| Checking the Windings of a Three-Phase Compressor | |
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| Compressor Compression Ratio Test | |
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| Reciprocating Compressor Vacuum Test (Atmosphere as Head Pressure) | |
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| Closed-Loop Compressor Running Bench Test | |
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| Closed-Loop Compressor Running Field Test | |
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| Compressor Running Test in the System | |
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| Cleaning a Dirty Sealed System | |
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| Procedures for Checking for Noncondensables Within a Sealed System | |
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| Theory Lesson: Expansion Devices | |
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| Evaluating the Operation of a Sealed System with a Capillary Tube Metering Device | |
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| Adjusting the Superheat Setting on a TXV Metering Device | |
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| Theory Lesson: Condensers | |
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| Measuring the Sub-cooling of an Air-Cooled Condenser | |
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| Standard Efficiency Air-Cooled Condenser Performance Evaluation | |
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| High-Efficiency Air-Cooled Condenser Performance Evaluation | |
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| Water-Cooled Condenser Performance Evaluation | |
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| Determining Correct Operating High-Side Pressure for Refrigeration Equipment with a Standard Air-Cooled Condenser | |
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| Determining the Correct High-Side Pressure of Air Conditioning or Heat Pump Equipment with a High-Efficiency Air-Cooled Condenser | |
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| Determining the Correct Operating High-Side Pressure for Equipment with a Water-Cooled Condenser | |
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| Testing an Air Conditioner for Low Charge Before Installing Manifold Gages | |
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| Using the Sweat Line Method to Adjust the Charge on a Window Air Conditioner | |
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| Using Air Temperature Measurements to Check the Charge on a Window Air Conditioner | |
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| Heat Pumps | |
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| Theory Lesson: Heat Pump Theory of Operation | |
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| Checking a Four-Way (Reversing Valve) Valve Holding Coil | |
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| Mechanical Performance Check of a Four-Way Valve | |
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| Checking a Four-Way Valve for Leaking from System High Side to System Low Side | |
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| Theory Lesson: Heat Pumps Using Scroll Compressors | |
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| Single-Phase Scroll Compressor Motor Winding and Overload Protector Evaluation | |
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| Identifying Common, Run, and Start Terminals of a Split-Phase Scroll Compressor | |
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| Three-Phase Scroll Compressor Evaluation | |
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| Theory Lesson: Sealed-System Pump Down | |
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| Performing a Pump Down on a Split-System Heat Pump | |
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| Theory Lesson: Heat Pump Low-Voltage Thermostats | |
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| Checking Internal Operation of a Heat Pump Thermostat (Voltage Checks) | |
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| Checking Internal Operation of a Heat Pump Thermostat (Continuity Check) | |
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| Troubleshooting Mechanical Defrost Timers | |
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| Troubleshooting Solid-State Defrost Circuit Board and Temperature Sensor | |
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| Checking Heat Pump Auxiliary Heat-Electric Heating Elements (Limit Switch, Fuse Link, Heating Element, Sequencer) | |
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| Using Manufacturer's Charging Chart to Check or Charge a Heat Pump | |
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| Using the Sub-cool Method of Charging R-22 Heat Pumps Equipped with a Thermostatic Expansion Device (TXV) | |
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| Charging an R-22 Heat Pump by Using an R-22 Superheat/Sub-cooling Calculator-Superheat Method | |
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| Charging an R-22 Heat Pump Equipped with a TXV Metering Device by Using an R-22 Superheat/Sub-cooling Calculator-Sub-cool Method | |
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| Checking for Proper Airflow Range of a Split-System Heat Pump Using an Airflow Range Charging Calculator | |
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| Charging an R-410A Heat Pump by Using an R-410A Superheat/Sub-cooling Calculator-Superheat Method | |
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| Charging an R-410A Heat Pump Equipped with a TXV by Using an R-410A Superheat/Sub-cooling Calculator-Sub-cool Method | |
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| Checking for Proper Airflow Range of a Split-System Heat Pump Using an R-410A Proper Airflow Range Charging Calculator | |
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| Field Charging or Checking the Charge of a Heat Pump System with a Fixed-Bore Metering Device Operating in Low Ambient Temperatures | |
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| Field Charging or Checking the Charge of a Heat Pump System with a TXV Metering Device Operating in Low Ambient Temperatures | |
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| Determining Correct Operating High-Side Pressure for Heat Pump Equipment with a Standard Air-Cooled Condenser | |
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| Determining the Correct High-Side Pressure of Heat Pump Equipment with a High-Efficiency Air-Cooled Condenser | |
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| Oil Heat | |
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| Theory Lesson: Oil Heat | |
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| Theory Lesson: Oil Furnace Sequence of Operation | |
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| Oil Burner Motor Evaluation | |
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| Theory Lesson: Fuel Oil Pumps | |
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| Checking and Adjust the Oil Pump's Discharge Pressure | |
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| Oil Pump Standing Pressure Test | |
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| Oil Pump Vacuum Test | |
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| Bleeding a One-Pipe System | |
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| Ignition Transformer (Screwdriver Method) | |
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| Checking and Setting the Electrodes of an Oil Burner | |
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| Theory Lesson: Operation of Cad Cell Oil Primary Controls | |
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| Wiring a Primary Control into an Oil Burner Assembly | |
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| Cad Cell Primary Control Check Out | |
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| Checking Low-Voltage Output of Cad Cell Primary Control | |
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| Theory Lesson: Fan and Limit Safety Switch | |
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| Checking a Fan Limit Switch on a Fossil Fuel Furnace | |
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| Setting and Checking a Fan Limit Temperature Switch | |
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| Theory Lesson: Stacked-Mounted Safety Control | |
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| Checking the Operational Components of a Stack Switch Safety Control | |
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| Measuring and Setting the Heat Anticipator | |
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| Theory Lesson: Smoke in Fossil Fuel Combustion | |
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| Performing a Smoke Test on Fossil Fuel Equipment | |
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| Overfire Draft Test | |
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| Performing a Stack Draft or Breech Test on Fossil Fuel Equipment | |
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| Determining Net-Stack Temperature on Fossil Fuel Equipment | |
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| Performing a Carbon Dioxide (CO[subscript 2]) Test on Fossil Fuel Equipment | |
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| Complete Combustion Test on Fossil Fuel Equipment | |
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| Gas Heat | |
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| Theory Lesson: Gas Heat | |
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| Threading Steel Pipe | |
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| Standing Pilot Ignition Procedures | |
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| Pilot Flame Adjustment-Standing Pilot Ignition System | |
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| Checking a Thermocouple | |
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| Checking for Correct Electrical Polarity | |
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| Checking the Igniter of an HSI Ignition System | |
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| Checking a Flame Sensing Rod | |
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| Checking Draft or Combustion Blower Pressure Switch | |
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| Checking a Furnace High-Limit Switch | |
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| Checking the Draft Induced or Combustion Blower Motor | |
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| Checking a Gas Valve | |
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| Checking a Smart Valve Control System | |
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| Checking and Adjusting Manifold Gas Pressure | |
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| Checking Proper Airflow Using the Temperature Rise Method | |