ISBN-10:
0130119881
ISBN-13:
9780130119889
Pub. Date:
08/24/1999
Publisher:
Pearson Education
Electricity, Electronics, and Control Systems for HVAC / Edition 2

Electricity, Electronics, and Control Systems for HVAC / Edition 2

by Thomas E. Kissell

Hardcover

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Product Details

ISBN-13: 9780130119889
Publisher: Pearson Education
Publication date: 08/24/1999
Edition description: Older Edition
Pages: 548
Product dimensions: 7.82(w) x 9.57(h) x 1.37(d)

Table of Contents

1 SAFETY
1(14)
1.0 Overview of Safety and Shop Practices
1(1)
1.1 Safety Glasses, Protective Clothing, and Protective Equipment
1(2)
1.2 Safety Mats and Equipment to Prevent Fatigue
3(1)
1.3 Safety Light Curtains and Two-Hand Start Buttons
4(1)
1.4 Safety Shields
4(1)
1.5 Checking Guards and Active Safety Devices
5(1)
1.6 Cleanliness and Shop Housekeeping
5(1)
1.7 Leaks
6(1)
1.8 Material Safety Data Sheets
6(1)
1.9 First Aid and CPR
6(1)
1.10 Fire Safety
7(2)
1.11 Electrical Safety
9(1)
1.12 Working Safely with Hand Tools and Power Tools
10(1)
1.13 Safety Briefings and Safety Meetings
11(1)
1.14 Review
11(1)
Questions
12(1)
True or False
12(1)
Multiple Choice
12(1)
Problems
13(2)
2 FUNDAMENTALS OF ELECTRICITY AND ELECTRICAL METERS
15(32)
Objectives
15(1)
2.0 Overview of Electricity
15(1)
2.1 Example of a Simple Electrical Circuit in a Heating System
16(3)
2.2 Example of Voltage in a Circuit
19(1)
2.3 Example of Current in a Circuit
19(1)
2.4 Example of Resistance in a Circuit
20(1)
2.5 Identifying the Basic Parts of a Circuit
21(1)
2.6 Comparing Electricity with a Water System
22(1)
2.7 Using Ohm's Law to Calculate Volts, Amps, and Ohms
23(1)
2.8 Ohm's Law Formulas
23(1)
2.9 Using Ohm's Law to Calculate Voltage
24(1)
2.10 Using Ohm's Law to Calculate Current
24(1)
2.11 Using Ohm's Law to Calculate Resistance
24(1)
2.12 Using Ohm's Law Wheel to Remember Ohm's Law Formulas
24(1)
2.13 Calculating Electrical Power
25(1)
2.14 Presenting All the Formulas
26(1)
2.15 Measuring Volts, Amps, and Ohms
27(1)
2.16 Measuring Voltage
27(3)
2.17 Measuring Electrical Current
30(2)
2.18 Measuring Milliamps
32(1)
2.19 Creating a Multiplier with a Clamp-On Ammeter
33(1)
2.20 Measuring Electrical Resistance
33(2)
2.21 Reading the Scales of the VOM Meter
35(1)
2.22 Measuring DC Volts and Reading the VOM Scales
36(2)
2.23 Measuring and Reading the Milliamp Scales on the VOM
38(1)
2.24 Measuring and Reading Resistance Scales on the VOM
39(1)
2.25 Making Measurements with Digital VOM Meters
40(1)
2.26 Review
41(1)
Questions
42(1)
True or False
43(1)
Multiple Choice
43(2)
Problems
45(2)
3 SERIES CIRCUITS
47(16)
Objectives
47(1)
3.0 Introduction
47(1)
3.1 Examples of Series Circuits
48(1)
3.2 Adding Loads in Series
49(3)
3.3 Using Resistors as Loads
52(1)
3.4 Resistor Color Codes
52(2)
3.5 Decoding a Resistor
54(1)
3.6 Calculating the Resistor Tolerance
54(1)
3.7 Using Ohm's Law to Calculate Ohms, Volts, and Amps for Resistors in Series
55(1)
3.8 Solving for Current in a Series Circuit
56(1)
3.9 Calculating the Voltage Drop Across Each Resistor
57(1)
3.10 Calculating the Power Consumption of Each Resistor
58(1)
3.11 Calculating the Power Consumption of an Electrical Heating Element
59(1)
3.12 Review
59(1)
Questions
60(1)
True or False
60(1)
Multiple Choice
61(1)
Problems
61(2)
4 PARALLEL AND SERIES-PARALLEL CIRCUITS
63(20)
Objectives
63(1)
4.0 Introduction
63(1)
4.1 Calculating Voltage, Current, and Resistance in a Parallel Circuit
64(2)
4.2 Calculating Resistance in a Parallel Circuit
66(3)
4.3 Calculating Power in a Parallel Circuit
69(1)
4.4 Reviewing the Principles of Parallel Circuits
69(1)
4.5 Using Prefixes with Units of Measure
70(2)
4.6 Series-Parallel Circuits
72(6)
4.7 Series-Parallel Circuits in Air-Conditioning and Refrigeration Systems
78(1)
4.8 Troubleshooting Series-Parallel Circuits
79(1)
4.9 Review
80(1)
Questions
80(1)
True or False
81(1)
Multiple Choice
81(1)
Problems
82(1)
5 MAGNETIC THEORY
83(14)
Objectives
83(1)
5.0 Magnetic Theory
83(2)
5.1 A Typical Bar Magnet and Flux Lines
85(1)
5.2 Electromagnets
86(3)
5.3 Adding Coils of Wire to Increase the Strength of an Electromagnet
89(1)
5.4 Using a Core to Increase the Strength of the Magnetic Field of a Coil
90(1)
5.5 Reversing the Polarity of a Magnetic Field in an Electromagnet
90(2)
5.6 An Overview of AC Voltage
92(1)
5.7 Electromagnetic Induction
93(1)
5.8 Review of Magnetic Principles
94(1)
Questions
95(1)
True or False
95(1)
Multiple Choice
95(1)
Problems
96(1)
6 FUNDAMENTALS OF AC ELECTRICITY
97(18)
Objectives
97(1)
6.0 What Is Alternating Current?
97(1)
6.1 Where Does AC Voltage Originate?
98(1)
6.2 Frequency of AC Voltage
98(2)
6.3 Peak Voltage and rms Voltage
100(1)
6.4 The Source of AC Voltage for Heating, Ventilating, and Air-Conditioning Systems
101(2)
6.5 Measuring AC Voltage in a Disconnect
103(1)
6.6 Voltage and Current in AC Circuits
104(1)
6.7 Resistance and Capacitance in an AC Circuit
105(1)
6.8 Calculating Capacitive Reactance
106(1)
6.9 Calculating the Total Opposition for a Capacitive and Resistive Circuit
107(1)
6.10 Resistance and Inductance in an AC Circuit
107(1)
6.11 Calculating Inductive Resistance
108(1)
6.12 Calculating the Total Opposition for an Inductive and Resistive Circuit
109(1)
6.13 True Power and Apparent Power in an AC Circuit
109(1)
6.14 Calculating Power Factor
110(1)
6.15 Review
110(1)
Questions
111(1)
True or False
112(1)
Multiple Choice
112(1)
Problems
113(2)
7 TRANSFORMERS, THREE-PHASE, AND SINGLE-PHASE VOLTAGE
115(32)
Objectives
115(1)
7.0 Overview of Transformers
115(2)
7.1 Operation of a Transformer and Basic Magnetic Theory
117(1)
7.2 Connecting a Transformer to a Disconnect for Testing
118(2)
7.3 Transformer Rated for 230 Volts and 208 Volts Primary
120(1)
7.4 Transformer Voltage, Current, and Turns Ratios
120(3)
7.5 Step-up and Step-down Transformers
123(1)
7.6 VA Ratings for Transformers
123(1)
7.7 The 110 VAC Control Transformer
124(1)
7.8 Wiring the Control Transformer for 480 VAC Primary Volts
125(1)
7.9 Wiring the Control Transformer for 240 VAC Primary Volts
126(1)
7.10 Troubleshooting a Transformer
127(1)
7.11 Nature of Three-Phase Voltage
128(1)
7.12 Why Three-Phase Voltage Is Generated
128(1)
7.13 Three-Phase Transformers
129(2)
7.14 The Wye-Connected Three-Phase Transformer
131(1)
7.15 The Delta-Connected Three-Phase Transformer
131(1)
7.16 Delta- and Wye-Connected Transformers with a Neutral Terminal
132(3)
7.17 The High Leg Delta System
135(2)
7.18 Three-Phase Voltage on Site
137(2)
7.19 Installing Wiring in a Three-Phase Disconnect
139(1)
7.20 Testing for a Bad Fuse in a Disconnect
139(2)
7.21 Single-Phase Voltage from a Three-Phase Supply
141(1)
7.22 Wiring a Duplex Receptacle as a Utility Outlet
141(1)
7.23 Review
142(1)
Questions
143(1)
True or False
143(1)
Multiple Choice
144(1)
Problems
145(2)
8 SYMBOLS AND DIAGRAMS FOR HVAC AND REFRIGERATION SYSTEMS
147(24)
Objectives
147(1)
8.0 Overview of Electrical Systems
147(1)
8.1 Simple Air-Conditioning Electrical Systems
148(1)
8.2 Electrical Symbols
148(2)
8.3 Electrical Diagram of an Air-Conditioning System
150(4)
8.4 Loads for the Air-Conditioning System
154(2)
8.5 Controls for the Air-Conditioning System
156(1)
8.6 Electrical Diagrams of a Simple Heating System
157(2)
8.7 Loads in the Heating System
159(3)
8.8 Electrical Diagram of a Simple Refrigeration System
162(2)
8.9 Loads for the Refrigeration System
164(3)
8.10 Controls for the Refrigeration System
167(1)
8.11 Review
168(1)
Questions
169(1)
True or False
169(1)
Multiple Choice
169(1)
Problems
170(1)
9 RELAYS, CONTACTORS, AND SOLENOIDS
171(32)
Objectives
171(1)
9.0 Overview of Relays and Contactors in the Control Circuit
171(1)
9.1 The Control Transformer
172(1)
9.2 The Theory and Operation of a Relay
172(2)
9.3 Types of Armature Assemblies for Relays
174(4)
9.4 Pull-in and Hold-in Current
178(1)
9.5 Normally Open and Normally Closed Contacts
178(2)
9.6 Ratings for Relay Contacts and Relay Coils
180(1)
9.7 Identifying Relays by the Arrangement of Their Contacts
181(2)
9.8 Examples of Relays Used in Air-Conditioning, Heating, and Refrigeration Systems
183(1)
9.9 Current Relays and Potential Relays for Starting Single-Phase Compressors
183(2)
9.10 The Difference Between a Relay and a Contactor
185(2)
9.11 NEMA Ratings for Contactors
187(2)
9.12 Using a Relay to Control the Furnace Fan
189(1)
9.13 Using a Contactor to Control a Compressor Motor
189(3)
9.14 The Function of the Control Circuit
192(1)
9.15 Solenoids Used in HVAC and Refrigeration Systems
192(1)
9.16 Basic Parts of a Solenoid Valve
193(1)
9.17 Troubleshooting a Solenoid Valve
194(1)
9.18 Reversing Valve for Heat Pumps
195(1)
9.19 The Internal Operation of the Reversing Valve
196(3)
9.20 Troubleshooting Relays, Contactors, and Solenoids
199(1)
9.21 Review
200(1)
Questions
200(1)
True or False
201(1)
Multiple Choice
201(1)
Problems
202(1)
10 SINGLE-PHASE OPEN MOTORS
203(48)
Objectives
203(1)
10.0 Overview of AC Single-Phase Induction Motors
203(1)
10.1 AC Split-Phase Motor Theory
204(2)
10.2 The Rotor
206(1)
10.3 Locked-Rotor Amperage and Full-Load Amperage
207(1)
10.4 Rotor Slip and Torque in an AC Induction Motor
208(1)
10.5 End Plates
209(2)
10.6 The Stator
211(1)
10.7 The Start Winding
212(2)
10.8 The Operation of the Centrifugal Switch
214(3)
10.9 The Run Winding
217(1)
10.10 Multiple-Speed Motors
218(1)
10.11 Motor Data Plates
219(5)
10.12 Wiring Split-Phase Motors for a Change of Rotation and Change of Voltage
224(1)
10.13 Overview of Capacitor-Start, Induction-Run Open-Type Motors
224(1)
10.14 Theory of Operation of a Capacitor-Start, Induction-Run Motor
225(3)
10.15 Applying Voltage to the Start Winding and Capacitor
228(1)
10.16 Wiring Split-Phase and Capacitor-Start, Induction-Run Motors for 115 Volts
229(1)
10.17 Wiring a Capacitor-Start, Induction-Run, Motor for 230 Volts
229(1)
10.18 Wiring Split-Phase and Capacitor-Start, Induction-Run Motors for a Change of Rotation
230(1)
10.19 Changing Speeds with a Capacitor-Start, Induction-Run Motor
231(1)
10.20 Overview of Permanent Split-Capacitor Open-Type Motors
231(2)
10.21 Basic Parts and Theory of Operation of a PSC Motor
233(1)
10.22 Applying Voltage to the Start Winding and Capacitor of a Permanent Split-Capacitor Motor
234(2)
10.23 Installation and Servicing Practices: Changing Rotation, Changing Voltages, and Changing Speeds of a Permanent Split-Capacitor Motor
236(1)
10.24 Wiring a Permanent Split-Capacitor Motor for a Change of Rotation
236(2)
10.25 Changing Speeds of a Permanent Split-Capacitor Motor
238(1)
10.26 Overview of Shaded-Pole Open-Type Motors
239(2)
10.27 Basic Parts and Electrical Diagram of the Shaded-Pole Open Motor
241(2)
10.28 Theory of Operation of a Shaded-Pole Motor
243(1)
10.29 Installation and Servicing Practices: Changing Rotation, Changing Voltages, and Changing Speeds of a Shaded-Pole Motor
244(1)
10.30 Changing Speeds of a Shaded-Pole Motor
244(1)
10.31 Wiring a Shaded-Pole Motor for a Change of Rotation
245(1)
10.32 Troubleshooting Single-Phase Motors
246(2)
10.33 Review
248(1)
Questions
248(1)
True or False
249(1)
Multiple Choice
249(1)
Problems
250(1)
11 SINGLE-PHASE HERMETIC COMPRESSORS
251(50)
Objectives
251(1)
11.0 The Split-Phase Hermetic Compressor
251(1)
11.1 Basic Parts of a Split-Phase Hermetic Compressor
252(4)
11.2 The Split-Phase Motor inside the Compressor
256(1)
11.3 The Current Relay
257(1)
11.4 Theory of Operation of the Split-Phase Compressor
258(1)
11.5 Theory of Operation of the Current Relay
259(1)
11.6 Starting the Split-Phase Compressor with the Current Relay
260(2)
11.7 Using the Wiring Diagram to Install the Permanent Split-Capacitor Compressor
262(1)
11.8 The Capacitor-Start, Induction-Run Hermetic Compressor
263(1)
11.9 Basic Parts of a Capacitor-Start, Induction-Run Hermetic Compressor
263(2)
11.10 The Operation of the Current Relay
265(1)
11.11 Thermal Overload Device
266(2)
11.12 The Hot Wire Relay
268(2)
11.13 The Solid-State Starting Relay
270(1)
11.14 Overview of the Permanent Split-Capacitor Compressor
271(2)
11.15 Basic Parts of the Permanent Split-Capacitor Compressor
273(1)
11.16 Theory of Operation of the PSC Compressor
274(1)
11.17 Using the Wiring Diagram to Install a Permanent Split-Capacitor Compressor
275(2)
11.18 Capacitor-Start, Capacitor-Run Compressor
277(1)
11.19 Components of the CSCR Compressor
278(3)
11.20 Theory of Operation of the CSCR Compressor
281(1)
11.21 Hard Start Kits for Compressors
281(2)
11.22 Using a Current Relay and Start Capacitor as a Hard Start Kit
283(1)
11.23 Adding a Potential Relay and Start Capacitor as a Hard Start Kit
283(1)
11.24 Using the Wiring Diagram to Install the Capacitor-Start, Capacitor-Run Compressor
284(1)
11.25 Controlling the CSCR Compressor
284(2)
11.26 Troubleshooting the Split-Phase Compressor
286(1)
11.27 Troubleshooting Procedure 1
286(2)
11.28 Troubleshooting Procedure 2
288(1)
11.29 Testing the Current Relay
289(3)
11.30 Troubleshooting Procedure 3
292(1)
11.31 Troubleshooting the CSCR Compressor
292(1)
11.32 Testing the CSCR Compressor Circuit for Current
293(2)
11.33 Testing the Potential Relay Out of the Circuit
295(1)
11.34 Testing the Potential Relay While It Is in the Circuit
295(1)
11.35 Troubleshooting the PSC Compressor
296(1)
11.36 Review
296(1)
Questions
297(1)
True or False
298(1)
Multiple Choice
298(1)
Problems
299(2)
12 THREE-PHASE OPEN MOTORS AND THREE-PHASE HERMETIC COMPRESSORS
301(22)
Objectives
301(1)
12.0 Three-Phase Motor Theory
301(1)
12.1 The Three-Phase Hermetic Compressor
302(1)
12.2 Basic Parts of a Three-Phase Compressor Motor
303(1)
12.3 Theory of Operation of the Three-Phase Compressor
303(3)
12.4 Wiring a Three-Phase Hermetic Compressor
306(1)
12.5 Changing Connections in Open Three-Phase Motors to Change Torque, Speed, or Voltage Requirements
306(1)
12.6 Wiring a Three-Phase Motor in a Wye Configuration
307(1)
12.7 Wiring a Three-Phase Motor in a Delta Configuration
307(2)
12.8 Rewiring a Nine-Lead Three-Phase Wye-Connected Motor for a Change of Voltage
309(2)
12.9 Rewiring a Nine-Lead Three-Phase Delta-Connected Motor for a Change of Voltage
311(1)
12.10 The 12-Lead Three-Phase Open-Type Motor
312(1)
12.11 Wiring a Three-Phase Open-Type Motor for a Change of Rotation
313(1)
12.12 Controlling a Three-Phase Compressor
313(2)
12.13 Controlling the Speed of a Three-Phase Motor
315(1)
12.14 Troubleshooting the Three-Phase Compressor
316(1)
12.15 Testing the Three-Phase Motor for Continuity
317(2)
12.16 Testing a Three-Phase Motor for Current
319(1)
12.17 Review
320(1)
Questions
320(1)
True or False
321(1)
Multiple Choice
321(1)
Problems
322(1)
13 MOTOR STARTERS AND OVERCURRENT CONTROLS
323(22)
Objectives
323(1)
13.0 Overview of Motor Starters
323(1)
13.1 Why Motor Starters Are Used in HVAC and Refrigeration Systems
324(1)
13.2 The Basic Parts of a Motor Starter
324(3)
13.3 The Operation of the Overload
327(2)
13.4 Exploded View of a Motor Starter
329(1)
13.5 Sizing Motor Starters
329(1)
13.6 Solid-State Motor Protectors
329(4)
13.7 Overcurrent Controls
333(1)
13.8 Thermal Overloads
333(1)
13.9 Fuses
334(2)
13.10 Fused Disconnect Panels
336(1)
13.11 Circuit Breakers and Load Centers
337
13.12 Conductors
328
13.13 Troubleshooting Motor Starters and Overcurrent Controls
339(2)
13.14 Review
341(1)
Questions
342(1)
True or False
342(1)
Multiple Choice
342(1)
Problems
343(2)
14 THERMOSTATS AND HEATING CONTROLS
345(34)
Objectives
345(1)
14.0 Overview of Thermostats and Heating Controls
345(1)
14.1 Sensing Temperature
346(1)
14.2 Using the Bimetal Element to Sense Temperature
346(1)
14.3 Amplifying the Movement of the Bimetal Element
347(1)
14.4 The Heating Thermostat
348(2)
14.5 The Heat Anticipator
350(2)
14.6 The Thermostat Subbase
352(1)
14.7 Cooling Thermostat
352(2)
14.8 Heating and Cooling Thermostats
354(1)
14.9 The Fan Switch
355(1)
14.10 Programmable Thermostats
355(1)
14.11 Line-Voltage Thermostats
356(1)
14.12 Thermocouples
356(2)
14.13 Resistive Temperature Detectors
358(1)
14.14 Thermistors
358(1)
14.15 Gas Furnace Controls
359(1)
14.16 The Pilot Assembly and Thermocouple
359(1)
14.17 The Gas Valve
360(1)
14.18 Direct-Spark Ignition-Type Gas Valves
361(1)
14.19 Igniter and Flame Rod
362(2)
14.20 Oil Burner Controls
364(1)
14.21 The Ignition Components
365(1)
14.22 The Primary Control and CAD Cell
365(1)
14.23 The Operational and Safety Circuit
365(2)
14.24 Fan and Limit Controls for Furnaces
367(3)
14.25 The Fan Switch
370(1)
14.26 Fan and Limit Control
371(2)
14.27 Air Flow Switches
373(1)
14.28 Humidistat
374(1)
14.29 Troubleshooting Thermostats and Heating Controls
375(1)
14.30 Review
375(1)
Questions
376(1)
True or False
376(1)
Multiple Choice
377(1)
Problems
377(2)
15 PRESSURE CONTROLS, TIMER CONTROLS, AND OTHER CONTROLS
379(16)
Objectives
379(1)
15.0 Overview of Pressure, Timer, and Overcurrent Controls
379(1)
15.1 Pressure Controls
380(2)
15.2 Low-Pressure Switches
382(1)
15.3 Fixed Pressure Switches
383(1)
15.4 Dual Pressure Switches
383(1)
15.5 Electrical Diagrams for Pressure Switches
384(1)
15.6 Oil Pressure Switches
385(2)
15.7 Cut-in and Cut-out Pressures
387(1)
15.8 Timer Controls
388(1)
15.9 Defrost Timer
388(2)
15.10 Electronic Defrost Controls
390(1)
15.11 Compressor Time-Delay Timers
391(1)
15.12 Troubleshooting Pressure Controls and Timers
392(1)
15.13 Review
392(1)
Questions
393(1)
True or False
393(1)
Multiple Choice
393(1)
Problems
394(1)
16 ELECTRONIC DEVICES FOR HVAC SYSTEMS
395(44)
Objectives
395(1)
16.0 Overview of Electronics Used in HVAC and Refrigeration Systems
395(1)
16.1 Conductors, Insulators, and Semiconductors
396(1)
16.2 Combining Atoms
397(1)
16.3 Combining Arsenic and Silicon to Make N-Type Material
398(1)
16.4 Combining Aluminum and Silicon to Make P-Type Material
399(1)
16.5 The PN Junction
400(1)
16.6 Forward Biasing the PN Junction
400(1)
16.7 Reverse Biasing the PN Junction
401(1)
16.8 Using a Diode for Rectification
401(2)
16.9 Half-Wave and Full-Wave Rectifiers
403(1)
16.10 Three-Phase Rectifiers
403(1)
16.11 Testing Diodes
404(1)
16.12 Identifying Diode Terminals with an Ohmmeter
405(1)
16.13 Light-Emitting Diodes
406(1)
16.14 PNP and NPN Transistors
407(1)
16.15 Operation of a Transistor
408(1)
16.16 Typical Transistors
409(1)
16.17 Troubleshooting Transistors
409(2)
16.18 Unijunction Transistors
411(1)
16.19 Operation of the UJT
412(1)
16.20 Testing the UJT
413(1)
16.21 The Silicon Controlled Rectifier
413(1)
16.22 Operation of the Silicon Controlled Rectifier
414(1)
16.23 Controlling the SCR
415(1)
16.24 Testing the SCR
416(1)
16.25 Typical SCRs
417(1)
16.26 The Diac
418(1)
16.27 Operation of the Diac
418(1)
16.28 The Triac
418(1)
16.29 Using the Triac as a Switch
419(2)
16.30 Using the Triac for Variable Voltage Control
421(1)
16.31 Testing the Triac
422(1)
16.32 Operational Amplifiers
422(2)
16.33 The Op Amp as an Amplifier
424(1)
16.34 Controlling a Relay with an Op Amp
425(1)
16.35 A Heating and Cooling Control System
426(1)
16.36 Using Proportional Valves Instead of Relays
427(2)
16.37 Controlling the Speed of a Three-Phase Motor with a Variable-Frequency Drive
429(1)
16.38 Operation of the Variable-Frequency Drive Circuit
430(2)
16.39 Solid-State Relays
432(2)
16.40 Troubleshooting Solid-State Devices
434(1)
16.41 Review
435(1)
Questions
435(1)
True or False
436(1)
Multiple Choice
436(1)
Problems
437(2)
17 ELECTRICAL CONTROL OF HEATING SYSTEMS
439(24)
Objectives
439(1)
17.0 Overview of Heating Systems
439(1)
17.1 Electric Heating Systems
440(1)
17.2 The Main Part of the System
440(1)
17.3 Normal Operation
441(2)
17.4 Troubleshooting the Electric Heating Furnace
443(1)
17.5 Troubleshooting the Heating Coils
444(1)
17.6 Testing the Fan Motor
445(1)
17.7 The Gas Heating System
446(1)
17.8 The Main Part of the Gas Furnace
447(1)
17.9 Normal Operation of the Gas Furnace
447(1)
17.10 Troubleshooting the Gas Furnace
448(1)
17.11 Troubleshooting the Control Circuit of a Gas Furnace
448(4)
17.12 Troubleshooting the Combustion Blower and Furnace Fan
452(2)
17.13 The Oil Heating System
454(1)
17.14 Normal Operation of the Oil Furnace
455(1)
17.15 Troubleshooting the Combustion Control of an Oil Furnace
456(2)
17.16 Troubleshooting the Oil Furnace Fan
458(1)
17.17 Review
459(1)
Questions
460(1)
True or False
460(1)
Multiple Choice
460(1)
Problems
461(2)
18 ELECTRICAL CONTROL OF AIR-CONDITIONING SYSTEMS
463(20)
Objectives
463(1)
18.0 Overview of Air-Conditioning Systems
463(1)
18.1 Room Air Conditioners (Window Air Conditioners)
464(1)
18.2 The Main Components of the System
465(1)
18.3 Normal Operation
466(1)
18.4 Troubleshooting the System
466(1)
18.5 Testing the Fan Motor
467(1)
18.6 Testing the Compressor
468(1)
18.7 Split-System Residential Air-Conditioning Systems
469(1)
18.8 The Main Components of the System
470(2)
18.9 Normal Operation
472(1)
18.10 Using the Wiring Diagram to Troubleshoot
472(1)
18.11 Using the Ladder Diagram to Troubleshoot
473(1)
18.12 Troubleshooting the System
473(1)
18.13 Testing the Condenser Fan Motor
473(1)
18.14 Testing the Compressor
474(2)
18.15 Commercial Packaged Air-Conditioning Systems
476(1)
18.16 Review
477(3)
Questions
480(1)
True or False
480(1)
Multiple Choice
480(1)
Problems
481(2)
19 ELECTRICAL CONTROL OF HEAT PUMP SYSTEMS
483(22)
Objectives
483(1)
19.0 Overview of Heat Pump Systems
483(2)
19.1 The Main Parts of a Split-System Heat Pump
485(1)
19.2 Normal Operation in Cooling
486(1)
19.3 Normal Operation in the Heating Cycle
487(2)
19.4 Normal Operation During the Defrost Cycle
489(1)
19.5 The Heat Pump Thermostat
490(3)
19.6 Troubleshooting the Heat Pump
493(1)
19.7 Troubleshooting the Heat Pump in the Cooling Mode
493(5)
19.8 Troubleshooting the Heat Pump in the Heating Mode
498(1)
19.9 Troubleshooting the Heat Pump in the Defrost Mode
499(1)
19.10 Package-Type Heat Pumps
499(1)
19.11 Review
500(3)
Questions
503(1)
True or False
503(1)
Multiple Choice
503(1)
Problems
504(1)
20 ELECTRICAL CONTROL OF REFRIGERATION SYSTEMS
505(26)
Objectives
505(1)
20.0 Overview of Refrigeration Systems
505(1)
20.1 Reach-In Coolers and Refrigeration Cases
506(2)
20.2 Normal Operation for the Reach-In Cooler
508(1)
20.3 Troubleshooting the Refrigeration System
508(3)
20.4 Freezer Cases
511(3)
20.5 Troubleshooting the Freezer Case
514(7)
20.6 Troubleshooting the Defrost Cycle
521(1)
20.7 Ice Makers
521(1)
20.8 Normal Operation of an Ice Maker
522(5)
20.9 Review
527(1)
Questions
527(1)
True or False
528(1)
Multiple Choice
528(1)
Problems
529(2)
APPENDIX A Developing a Ladder Diagram from a Wiring Diagram 531(12)
INDEX 543

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