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Electricity and Controls for Hvac/R,9780766817388
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Electricity and Controls for Hvac/R

by
Edition:
1st
ISBN13:

9780766817388

ISBN10:
0766817385
Format:
Paperback
Pub. Date:
7/31/2000
Publisher(s):
Cengage Learning

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Summary

Now in its fourth 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, plus 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. With an eimphasis on electrical safety, plus an all-new troubleshooting unit, this edition of Electricity and Controls for HVAC/R also features expanded information on thermostats, short cycle timers, heat pressure controls for refrigeration, variable frequency drives, and more!

Table of Contents

Preface v
SECTION 1 BASIC ELECTRICITY 1(76)
Safety
2(4)
Atomic Structure
6(5)
Electrical Quantities and Ohm's Law
11(9)
Measuring Instruments
20(10)
Electrical Circuits
30(12)
Electrical Services
42(12)
Wire Size and Voltage Drop
54(8)
Inductance
62(6)
Capacitance
68(9)
SECTION 2 CONTROL CIRCUITS 77(26)
Schematics and Wiring Diagrams
78(15)
Developing Wiring Diagrams
93(10)
SECTION 3 SINGLE-PHASE MOTORS 103(28)
Split-Phase Motors
104(10)
The Shaded-Pole Induction Motor
114(4)
Multispeed Motors
118(13)
SECTION 4 THREE-PHASE MOTORS 131(44)
Three-Phase Motor Principles
132(11)
The Squirrel-Cage Induction Motor
143(19)
The Wound Rotor Induction Motor
162(7)
The Synchronous Motor
169(6)
SECTION 5 TRANSFORMERS 175(34)
Isolation Transformers
176(21)
Autotransformers
197(6)
Current Transformers
203(6)
SECTION 6 CONTROL COMPONENTS 209(114)
Overloads
210(6)
Relays, Contactors, and Motor Starters
216(5)
The Solid-State Relay
221(3)
The Control Transformer
224(7)
Starting Relays
231(10)
Variable-Speed Motor Control
241(4)
The Defrost Timer
245(8)
The Thermostat
253(15)
Pressure Switches
268(5)
The Flow Switch
273(3)
The Humidistat
276(2)
Fan-Limit Switches
278(5)
The Oil-Pressure Failure Switch
283(4)
Solenoid Valves
287(5)
The Short-Cycle Timer
292(11)
Methods of Sensing Temperature
303(8)
Gas Burner Controls
311(6)
Oil Burner Controls
317(6)
SECTION 7 TROUBLESHOOTING USING CONTROL SCHEMATICS 323(50)
Introduction to Troubleshooting
324(14)
Room Air Conditioners
338(6)
A Commercial Air-Conditioning Unit
344(5)
Heat-Pump Controls
349(11)
Packaged Units: Electric Air Conditioning and Gas Heat
360(13)
SECTION 8 ICE MAKER AND REFRIGERATION CONTROLS 373(48)
Household Ice Makers
374(21)
Commercial Ice Makers
395(16)
Refrigeration Controls
411(10)
SECTION 9 SOLID-STATE DEVICES 421(56)
Resistors and Color Codes
422(7)
Semiconductor Materials
429(5)
The PN Junction
434(5)
The Light-Emitting Diode
439(2)
The Transistor
441(6)
The Unijunction Transistor
447(4)
The Silicon-Controlled Rectifier
451(7)
The Diac
458(2)
The Triac
460(5)
The Operational Amplifier
465(12)
SECTION 10 SOLID-STATE CONTROLS 477(20)
Programmable Controllers
478(9)
Programming a PC
487(7)
Analog Sensing for Programmable Controllers
494(3)
Glossary 497(16)
Index 513


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