Electricity for Refrigeration, Heating, and Air Conditioning

by Smith, R

• ISBN13: 9780827376533
• ISBN10: 0827376537
• Edition: 5th
• Format: Paperback
• Copyright: 1997-01-14
• Publisher: Delmar Publishers

Summary

New material includes a chapter on heating control devices (oil, gas, and electric), material on troubleshooting heating controls, installation of electric circuits for refrigeration, heating and air conditioning, clock and electric thermostats, and new material on basic electronic control systems used in residential conditioned air systems.

Table of Contents

Preface	vii
1. Basic Electricity	1	(21)
Objectives	1	(1)
Key Terms	1	(1)
Introduction	2	(1)
1.1 Atomic Theory	2	(2)
1.2 Positive and Negative Charges	4	(1)
1.3 Flow of Electrons	5	(3)
1.4 Conductors and Insulators	8	(1)
1.5 Electric Potential	9	(1)
1.6 Current Flow	10	(2)
1.7 Resistance	12	(1)
1.8 Electric Power and Energy	13	(2)
1.9 Ohm's Law	15	(2)
1.10 Calculating Electric Power	17	(1)
Summary	18	(1)
Questions	19	(3)
2. Electric Circuits	22	(17)
Objectives	22	(1)
Key Terms	22	(1)
Introduction	23	(1)
2.1 Basic Concepts of Electric Circuits	23	(2)
2.2 Series Circuits	25	(4)
2.3 Parallel Circuits	29	(4)
2.4 Series-Parallel Circuits	33	(2)
Summary	35	(1)
Questions	36	(3)
3. Electric Meters	39	(19)
Objectives	39	(1)
Key Terms	39	(1)
Introduction	40	(1)
3.1 Electric Meters	41	(5)
3.2 Ammeters	46	(3)
3.3 Voltmeters	49	(3)
3.4 Ohmmeters	52	(3)
Summary	55	(1)
Questions	56	(2)
4. Components, Symbols, and Circuitry of Air-Conditioning Wiring Diagrams	58	(43)
Objectives	58	(1)
Key Terms	59	(1)
Introduction	59	(1)
4.1 Loads	60	(4)
4.2 Contactors and Relays	64	(3)
4.3 Magnetic Starters	67	(1)
4.4 Switches	67	(5)
4.5 Safety Devices	72	(2)
4.6 Transformers	74	(1)
4.7 Schematic Diagrams	74	(3)
4.8 Reading Simple Schematic Diagrams	77	(5)
4.9 Reading Advanced Schematic Diagrams	82	(10)
4.10 Pictorial Diagrams	92	(1)
4.11 Installation Diagrams	92	(3)
Summary	95	(2)
Questions	97	(4)
5. Alternating Current, Power Distribution, and Voltage Systems	101	(19)
Objectives	101	(1)
Key Terms	101	(1)
Introduction	102	(1)
5.1 Basic Concepts of Alternating Current	102	(6)
5.2 Power Distribution	108	(1)
5.3 230 Volt-Single Phase-60 Hertz Systems	108	(3)
5.4 Three Phase Voltage Systems	111	(1)
5.5 230 Volt-Three Phase-60 Hertz Delta System	111	(2)
5.6 208 Volt-Three Phase-60 Hertz Wye System	113	(1)
5.7 Higher Voltage Systems	114	(2)
Summary	116	(2)
Questions	118	(2)
6. Installation of Heating, Cooling, and Refrigeration Systems	120	(24)
Objectives	120	(1)
Key Terms	120	(1)
Introduction	121	(1)
6.1 Sizing Wire	121	(7)
6.2 Disconnect Switches	128	(2)
6.3 Fusible Load Centers	130	(2)
6.4 Breaker Panels	132	(4)
6.5 Distribution Centers	136	(1)
6.6 Installing Electrical Circuits for Refrigeration, Heating, and Air-Conditioning Equipment	137	(4)
Summary	141	(1)
Questions	142	(2)
7. Basic Electric Motors	144	(53)
Objectives	144	(1)
Key Terms	145	(1)
Introduction	145	(1)
7.1 Magnetism	145	(3)
7.2 Basic Electric Motor	148	(2)
7.3 Types of Electric Motors	150	(1)
7.4 Shaded-Pole Motors	151	(4)
7.5 Capacitors	155	(4)
7.6 Split-Phase Motors	159	(5)
7.7 Permanent-Split Capacitor Motors	164	(3)
7.8 Capacitor-Start-Capacitor-Run Motors	167	(2)
7.9 Three-Phase Motors	169	(3)
7.10 Hermetic Compressor Motors	172	(8)
7.11 Service Call Protocol	180	(3)
7.12 Service Calls	183	(6)
Summary	189	(1)
Questions	190	(4)
Practice Service Calls	194	(3)
8. Components for Electric Motors	197	(32)
Objectives	197	(1)
Key Terms	197	(1)
Introduction	198	(1)
8.1 Starting Relays for Single-Phase Motors	198	(1)
8.2 Current or Amperage Relays	199	(3)
8.3 Potential Relays	202	(6)
8.4 Hot-Wire Relays	208	(1)
8.5 Solid-State Starting Relays	209	(4)
8.6 Motor Bearings	213	(3)
8.7 Motor Drives	216	(2)
8.8 Service Calls	218	(5)
Summary	223	(1)
Questions	224	(2)
Practice Service Calls	226	(3)
9. Contactors, Relays, and Overloads	229	(35)
Objectives	229	(1)
Key Terms	229	(1)
Introduction	230	(1)
9.1 Contactors	231	(5)
9.2 Relays	236	(6)
9.3 Overloads	242	(8)
9.4 Magnetic Starters	250	(3)
9.5 Push-Button Stations	253	(1)
9.6 Service Calls	254	(4)
Summary	258	(2)
Questions	260	(1)
Practice Service Calls	261	(3)
10. Thermostats, Pressure Switches, and Other Electric Control Devices	264	(44)
Objectives	264	(1)
Key Terms	265	(1)
Introduction	265	(1)
10.1 Transformers	266	(2)
10.2 Thermostats	268	(13)
10.3 Staging Thermostats	281	(4)
10.4 Clock Thermostats	285	(5)
10.5 Pressure Switches	290	(3)
10.6 Miscellaneous Electric Components	293	(5)
10.7 Service Calls	298	(4)
Summary	302	(1)
Questions	303	(3)
Practice Service Calls	306	(2)
11. Heating Control Devices	308	(45)
Objectives	308	(1)
Key Terms	308	(1)
Introduction	309	(1)
11.1 Heating Fundamentals	310	(3)
11.2 Basic Heating Controls	313	(6)
11.3 Gas Heating Controls	319	(10)
11.4 Oil Heating Controls	329	(7)
11.5 Electric Heating Controls	336	(3)
11.6 Hydronic and Steam Controls	339	(3)
11.7 Service Calls	342	(4)
Summary	346	(2)
Questions	348	(3)
Practice Service Calls	351	(2)
12. Troubleshooting Electric Control Devices	353	(47)
Objectives	353	(1)
Key Terms	353	(1)
Introduction	353	(1)
12.1 Electric Motors	354	(1)
12.2 Contactors and Relays	355	(2)
12.3 Overloads	357	(6)
12.4 Thermostats	363	(3)
12.5 Pressure Switches	366	(4)
12.6 Transformers	367	(1)
12.7 Electric Heating Controls	368	(3)
12.8 Gas Heating Controls	371	(8)
12.9 Oil Heating Controls	379	(6)
12.10 Service Calls	385	(6)
Summary	391	(1)
Questions	392	(2)
Practice Service Calls	394	(6)
13. Air-Conditioning Control Systems	400	(27)
Objectives	400	(1)
Key Terms	400	(1)
Introduction	400	(2)
13.1 Basic Condensing Units	402	(6)
13.2 Packaged Units	408	(7)
13.3 Field Wiring	415	(7)
Summary	422	(2)
Questions	424	(3)
14. Control Systems: Circuitry and Troubleshooting	427	(47)
Objectives	427	(1)
Key Terms	427	(1)
Introduction	428	(1)
14.1 Basic Control Circuits	428	(4)
14.2 Total Control System of Residential Units	432	(2)
14.3 Advanced Control Systems	434	(9)
14.4 Methods of Control on Advanced Systems	443	(4)
14.5 Total Commercial and Industrial Control Systems	447	(3)
14.6 Troubleshooting Control Systems	450	(7)
14.7 Service Calls	457	(9)
Summary	466	(1)
Questions	467	(4)
Practice Service Calls	471	(3)
15. Solid-State Controls and Systems	474	(30)
Objectives	474	(1)
Key Terms	474	(1)
Introduction	475	(1)
15.1 Electronic System Components	476	(5)
15.2 Basic Electronic Controls	481	(11)
15.3 Basic Electronic Control Systems Used in Residential Conditioned Air Systems	492	(4)
15.4 Advanced Electronic Controls	496	(4)
Summary	500	(2)
Questions	502	(2)
Glossary	504	(11)
Index	515