Description: Now in its fifth edition, Electricity and Controls for HVAC-R 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. Product Benefits: - 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
- new units on brushless DC motors, as well as light-emitting diodes (LEDs) and photodiodes introduce students to the latest technologies in the field
- units on programmable logic controllers (PLCs) and programming PLCs are thoroughly updated to remain current with industry practices
- requirements for unit installation have been updated to comply with 2005 NEC® standards
Table of Contents: Section I Basic Electricity
Unit 1 Atomic Structure
Unit 2 Electrical Quantities and Ohms Law
Unit 3 Measuring Instruments
Unit 4 Electrical Circuits
Unit 5 Electrical Services
Unit 6 Wire Size and Voltage Drop
Unit 7 Inductance
Unit 8 Capacitance
Section II Control Circuits
Unit 9 Schematic and Wiring Diagrams
Unit 10 Developing Wiring Programs
Section III Motors
Unit 11 Split-Phase Motors
Unit 12 The Shaded-Pole Induction Motor
Unit 13 Multispeed Motors
Unit 14 Three-Phase Motor Principles
Unit 15 The Squirrel-Cage Induction Motor
Unit 16 The Wound Rotor Induction Motor
Unit 17 The Synchronous Motor
Unit 18 Brushless DC Motors
Section IV Transformers
Unit 19 Isolation Transformers
Unit 20 Autotransformers
Unit 21 Current Transformers
Section V Control Components
Unit 22 Overloads
Unit 23 Relays, Contactors, and Motor Starters
Unit 24 The Solid-State Relay
Unit 25 The Control Transformer
Unit 26 Starting Relays
Unit 27 Variable-Speed Motor Control
Unit 28 The Defrost Timer
Unit 29 The Thermostat
Unit 30 Pressure Switches
Unit 31 The Flow Switch
Unit 32 The Humidistat
Unit 33 Fan-Limit Switches
Unit 34 The Oil-Pressure Failure Switch
Unit 35 Solenoid Valves
Unit 36 The Short-Cycle Timer
Unit 37 Methods of Sensing Temperature
Unit 38 Gas Burner Controls
Unit 39 Oil Burner Controls
Section VI Troubleshooting Using Control Schematics
Unit 40 Introduction to Troubleshooting
Unit 41 Room Air Conditioners
Unit 42 A Commercial Air-Conditioning Unit
Unit 43 Heat-Pump Controls
Unit 44 Packaged Units : Electric Air Conditioning and Gas Heat
Section VII Ice Maker and Refrigeration Controls
Unit 45 Household Ice Makers
Unit 46 Commercial Ice Makers
Unit 47 Refrigeration Controls
Section 8 Solid-State Devices
Unit 48 Resistors and Color Codes
Unit 49 Semiconductor Materials
Unit 50 The PN Junction
Unit 51 Light-Emitting Diodes (LEDs) and Photodiodes
Unit 52 The transistor
Unit 53 The Unijunction Transistor
Unit 54 The Silicon-Controlled Rectifier
Unit 55 The Diac
Unit 56 The Triac
Unit 57 The Operational Amplifier
Section IX Solid-State Controls
Unit 58 Programmable Logic Controllers
Unit 59 Programming a PC
Unit 60 Analog Sensing for Programmable Controllers
Glossary
Index |
