Offering the most up-to-date coverage available, ELECTRICITY AND CONTROLS FOR HVAC-R, 7e emphasizes the basics as it 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. Extremely reader friendly, the text reflects the current National Electrical Code® and requires no prior knowledge of electricity. It begins with discussions of essential basic electricity and electrical circuits concepts, while detailed schematic diagrams and step-by-step troubleshooting procedures highlight all of the different types of circuits commonly encountered in the HVAC-R field. The Seventh Edition is packed with vibrant photos, engaging illustrations, and coverage of the latest technology and developments from the field.
- Incorporating reviewer feedback throughout, ELECTRICITY AND CONTROLS FOR HVAC-R, 7e features new photos, enhanced illustrations, the latest technology, and the most up-to-date coverage available.
- The Seventh Edition offers a complete supplement package for instructors, including IML in pdf, comprehensive test bank, image gallery, and engaging PowerPoint slides available on the online instructor companion website.
- Expanded information spotlights the differences between direct current and alternating current.
- The new edition offers more detailed coverage of resistors.
- New information focuses on the voltage rating of capacitors.
- Additional coverage of diodes includes new detailed explanations of zener diodes.
- A full explanation of the silicon bilateral switch is included.
- Coverage of rectifiers is now more extensive.
- Discussions of current transformers are more comprehensive than ever.
- The gate-turnoff SCR is explained in full detail.
- Extended information is provided on short cycle timers.
- The Seventh Edition is updated to the 2011 National Electrical Code.
- Coverage of atomic structure reflects the most accepted theories concerning the structure of atoms.
- Offering valuable insight for real-world practice, the unit on troubleshooting includes an example of a step-by-step procedure for determining the problems with a central air conditioning system.
- Comprehensive coverage of electric motors includes three-phase motors, squirrel cage induction motors, wound rotor motors, synchronous motors, and more.
- Circuits commonly encountered in the field are explained in a practical, non-mathematical manner.
- Units on programmable logic controllers (PLCs) and programming PLCs remain current with industry practices.
Table of Contents:
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.
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.
21. Current Transformers.
Part V: CONTROL COMPONENTS.
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 REFRIGERATION 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.
51. Light-Emitting Diodes (LEDs) and Photodiodes.
52. The Transistor.
53. The Unijunction Transistor.
54. The Silicon-Controlled Rectifier and GTO.
55. The Diac and SBS.
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.