Now in its sixth edition, ELECTRICITY AND CONTROLS FOR HVAC-R, International Edition equips readers with the information needed to work effectively with all types of motors and control devices found in the heating and air-conditioning industry. Prior knowledge of electricity is not required as this book begins with discussion of essential basic electricity and electrical circuits concepts. Numerous schematic diagrams and step-by-step troubleshooting procedures are included to acquaint readers with all of the different types of circuits commonly encountered in the HVAC-R field.
Features
COMPREHENSIVE COVERAGE: Comprehensive coverage of electric motors includes three-phase motors, squirrel cage induction motors, wound rotor motors, synchronous motors, and more.
PRACTICAL EXPLANATIONS: Circuits commonly encountered in the field are explained in a practical, non-mathematical manner.
UPDATED UNITS ON LATEST TECHNOLOGIES: New units on brushless DC motors, as well as light-emitting diodes (LEDs) and photodiodes introduce students to the latest technologies in the field.
UPDATED UNITS ON INDUSTRY PRACTICES: Units on programmable logic controllers (PLCs) and programming PLCs are thoroughly updated to remain current with industry practices.
REQUIREMENTS FOR 2008 NEC® STANDARDS: Requirements for unit installation have been updated to comply with 2008 NEC® standards.
Part I: BASIC ELECTRICITY.
1. Atomic Structure.
2. Electrical Quantities and Ohm's Law.
3. Measuring Instruments.
4. Electrical Circuits.
5. Electrical Services.
6. Wire Size and Voltage Drop.
7. Inductance.
8. Capacitance.
Part II: CONTROL CIRCUITS.
9. Schematic and Wiring Diagrams.
10. Developing Wiring Programs.
Part III: MOTORS.
11. Split-Phase Motors.
12. The Shaded-Pole Induction Motor.
13. Multispeed Motors.
14. Three-Phase Motor Principles.
15. The Squirrel-Cage Induction Motor.
16. The Wound Rotor Induction Motor.
17. The Synchronous Motor.
18. Brushless DC Motors.
Part IV: TRANSFORMERS.
19. Isolation Transformers.
20. Autotransformers.
21. Current Transformers.
Part V: CONTROL COMPONENTS.
22. Overloads.
23. Relays, Contactors, and Motor Starters.
24. The Solid-State Relay.
25. The Control Transformer.
26. Starting Relays.
27. Variable-Speed Motor Control.
28. The Defrost Timer.
29. The Thermostat.
30. Pressure Switches.
31. The Flow Switch.
32. The Humidistat.
33. Fan-Limit Switches.
34. The Oil-Pressure Failure Switch.
35. Solenoid Valves.
36. The Short-Cycle Timer.
37. Methods of Sensing Temperature.
38. Gas Burner Controls.
39. Oil Burner Controls.
Part VI: TROUBLESHOOTING USING CONTROL SCHEMATICS.
40. Introduction to Troubleshooting.
41. Room Air Conditioners.
42. A Commercial Air-Conditioning Unit.
43. Heat-Pump Controls.
44. Packaged Units : Electric Air Conditioning and Gas Heat.
Part VII: ICE MAKER AND REFRIDGERATION CONTROLS.
45. Household Ice Makers.
46. Commercial Ice Makers.
47. Refrigeration Controls.
Part VIII: SOLID-STATE DEVICES.
48. Resistors and Color Codes.
49. Semiconductor Materials.
50. The PN Junction.
51. Light-Emitting Diodes (LEDs) and Photodiodes.
52. The transistor.
53. The Unijunction Transistor.
54. The Silicon-Controlled Rectifier.
55. The Diac.
56. The Triac.
57. The Operational Amplifier.
Part IX: SOLID-STATE CONTROLS.
58. Programmable Logic Controllers.
59. Programming a PC.
60. Analog Sensing for Programmable Controllers.
Glossary.
Stephen L. Herman
Stephen L. Herman--both an electrician and a teacher for more than 30 years--authored numerous popular textbooks on the subjects of electricity and mathematics. Now retired, Mr. Herman spent two decades as lead instructor for the Electrical Technology Curriculum at Lee College in Baytown, Texas, where he received an Excellence in Education Award from the Halliburton Education Foundation. He also taught at Randolph Community College in Asheboro, North Carolina, for nine years, and helped establish an electrical curriculum for Northeast Texas Community College in Mount Pleasant, Texas. Additional publications include DELMAR'S STANDARD TEXTBOOK OF ELECTRICITY, INDUSTRIAL MOTOR CONTROLS, UNDERSTANDING MOTOR CONTROLS, ELECTRIC MOTOR CONTROL, ELECTRONICS FOR ELECTRICIANS, ELECTRICAL WIRING INDUSTRIAL, ALTERNATING CURRENT FUNDAMENTALS, DIRECT CURRENT FUNDAMENTALS, ELECTRICAL STUDIES FOR TRADES, ELECTRICAL PRINCIPLES, ELECTRICAL TRANSFORMERS AND ROTATING MACHINES, EXPERIMENTS IN ELECTRICITY FOR USE WITH LAB VOLT, THE COMPLETE LABORATORY MANUAL FOR ELECTRICITY, and PRACTICAL PROBLEMS IN MATHEMATICS FOR ELECTRICIANS.