1 Careers in Heating, Ventilation, Air Conditioning, and Refrigeration ........................... 1 2 Hand Tools ...................................... 17 3 Fasteners ........................................ 35 4 Working with Copper Tubing ........ 49 5 Working with Pipe .......................... 65 6 Soldering ......................................... 81 7 Brazing and Flame Cutting .......... 99 8 Mathematics for Technicians ......121 9 Basic Thermodynamic Principles ......................................137 10 Temperature and Pressure ..........151 11 Basic Refrigeration Cycle ............167 12 Other System Components .........191 13 Refrigerants ...................................217 14 Zeotropic Blends .......................... 241 15 Refrigerant Recovery and Recycling ..................................... 259 16 System Evacuation, Leak Detection, and Recharging ....... 281 17 Working with Metering Devices ..313 18 Special-Purpose Valves .............. 333 19 Troubleshooting Refrigerant Flow Controls .............................. 355 20 Compressors ................................ 369 21 Compressor Lubrication and Accessories ................................ 387 22 Water Chillers ................................411 23 What Is Electricity? ..................... 431 24 Power Transmission and Circuits ......................................... 465 25 Induction Motors .......................... 481 26 Electromagnetic Control Devices .........................................517 27 Motor Controls.............................. 549 28 Defrost Cycles .............................. 575 29 Ductwork ....................................... 605 30 Gas Heat with Air Conditioning... 631 31 Oil Heat with Air Conditioning .... 655 32 Electric Heat with Air Conditioning ................................ 675 33 Heat Pumps .................................. 691 34 Customer Relations ......................711 Glossary of Technical Terms ...... 720 Index ...............................................760 Brief Contents xii Copyright Goodheart-Willcox Co., Inc.