The second installment in a series of useful and resourceful guides, HVACR 201, continues to build upon the basics of the HVACR trade. The result of a joint effort by industry leading Air Conditioning Contractors of America (ACCA), PHCC Educational Foundation Plumbing Apprentice & Journeyman Training Committee (PHCC Educational Foundation), and the Refrigeration Service Engineers Society (RSES), the book begins with simpler HVACR concepts and progresses into increasingly complex theories and skills. Starting with coverage of all of the important components of a system, the book advances to deal with topics in electrical ,heating, motors , and cooling- then moving to troubleshooting and installation procedures. Theoretical knowledge is presented alongside practical, industry-relevant examples, allowing both entry-level technicians and 2nd year apprentices to easily learn and apply key HVACR concepts. Check out our app, DEWALT (R) Mobile Pro (TM). This free app is a construction calculator with integrated reference materials and access to hundreds of additional calculations as add-ons. To learn more, visit dewalt.com/mobilepro.
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Offering coverage of various components of a system, this book deals with topics in electrical ,heating, motors , cooling, troubleshooting and installation procedures. It presents theoretical knowledge alongside practical, industry-relevant examples.
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1)Year 2, First Semester a)Chapter One: Review of Refrigeration Cycle i)Basic refrigeration cycle ii)Saturation, superheat and subcooling iii)Compressors iv)Metering devices v)evaporators b)Chapter Two: Compressors i)Reciprocating ii)Scroll 2 stage iii)Hermetic and semi-hermitic iv)Rotary types, how they work, applications c)Chapter Three: Refrigerants and Lubricants (1)Applications and required lubricants (2)CFCs, HCFCs, chemical strength (3)Safety and handling (4)EPA certification (5)Recovery and recycle d)Chapter Four: Refrigerant Handling Certification e)Chapter Five: Condensers (1)Air cooled (2)Water cooled (3)Evaporative f)Chapter Six: Metering Devices i)Capillary tubes ii)Fixed orifice/plate iii)Thermostatic expansion valves (TXV) iv)Electronic expansion valves (EXV) g)Chapter Seven: Accessories i)Receivers ii)Accumulators iii)Service valves/access ports iv)Suction/liquid line heat exchangers v)Low ambient controls vi)Reversing valves (defrost, heat pump) vii)Relief valves viii)High/low pressure control ix)Vibration eliminators x)Crankcase heater h)Chapter Eight: Evaporators i) Types (plate, fin) and applications ii) Latent and sensible heat removal iii) Superheat iv) Direct expansion and flooded v) Pressure drop vi) Moisture removal vii) Defrost applications i)Chapter Nine: Evacuation and Charging i)Leak testing methods ii)Troubleshooting iii)Recovery iv)Vacuum pumps v)Dehydration vi)Safety j)Chapter Ten: Heating i)Types of heating appliances ii)Components, burners and valves iii)Boilers: water and stream iv)Sequence of operation v)Pumps vi)Venting vii)Gas pipe capacity viii)Ignition devices ix)Combustion process and testing x)Code and safety xi)Carbon monoxide xii)Electric and strip xiii)Radiant xiv)Venting xv)Combustion and secondary air xvi)Gas manifolds xvii)Temperature controls xviii)Safety and Limit controls xix)Sequence of operation k)Chapter Eleven: Electrical i)Ohms law review and application ii)Transformers, voltage, line vs load iii)Types of wire and wire sizes iv)Circuits and schematics v)Relays vi)Capacitors vii)XFMR viii)Logic ix)Sources: single and 3 phase x)Switches and loads xi)Contactors xii)Troubleshooting/testing xiii)Starters xiv)Overload protectors/overcurrent protection (fuses & circuit breakers) xv) Overcurrent/fuses xvi)Grounding xvii)Breakers xviii)OCPDs xix)Bonding xx) Sizing xxi)Disconnects and wire sizing l)Chapter Twelve: Electrical Troubleshooting i)Symptoms, possible causes and application to instrumentation ii)Circuits, complete, short, open and grounded iii)Troubleshooting iv)Effects of loose wire connections v)Wiring diagrams used for troubleshooting vi)Use of meter/with electrical schematics vii)Shorts, open, grounds viii)Loose neutrals m)Chapter Thirteen: Introduction to Motors i)Types of motors: squirrel cage, induction, single phase, dual phase, three phase and variable speed ii)Magnetism iii)Induced current iv)Electromagnetism v)Motor torque vi)Starting relays vii)Starting switch viii)Starting, relays ix)Efficiency x)Heat and temperature xi)Dimensions xii)Identifying motor start and run windings xiii)Mechanical and installation considerations xiv)Shafts xv)Lubrication and bearings xvi)Noisy operation xvii)Electrical connections xviii)Operating limitations xix)Motor overload protections xx)Nameplate data 2)Year Two, Second Semester a)Chapter Fourteen: Cooling Equipment i)Types of units: RTU, split, package, unitary, built-up, matched, ductless, chillers (air and water cooled), cooling tower, chilled water, CW, water treatment intro, pumping ii)Fluids iii)Closed vs open loop iv)Basic sizing v)CFM/ton vi)Sensible vs. latent heat vii)Velocity over face of coil viii)Economizers ix)Outside air x)Duct sizing - supply vs. return xi)Duct calculator b)Chapter Fifteen: Mechanical Troubleshooting i)Troubleshooting: refrigeration, A/C, furnace and air flow problems ii)Case studies of components/systems iii)Symptoms/problems/causes; refrigeration, cooling, heating, CSI c)Chapter Sixteen: Advanced Installation Techniques i)Best practices ii)Piping: Dielectric unions and support iii)Duct sealing systems iv)Common code violations and solutions v)Vibration and noise issues d)Chapter Seventeen: Control Systems i)Types of thermostats ii)Built-in thermostat functions iii)Heating/cooling controls iv)Sequence of operation v)Troubleshooting components vi)Pressure switches vii)Loss of charge e)Chapter Eighteen: Psychrometrics i)Why learn psychrometrics? ii)Psychrometric chart terminology iii)Human comfort zone iv)Gas laws v)Sling psychrometer vi)What do the lines on the psychrometric chart mean? vii)Using the psychrometric chart viii)Finding the properties of air ix)IAQ: mold and moisture issues x)Moisture control: humidification and dehumidification, system, room or whole house moisture control f)Chapter Nineteen: Basic Sizing i)Heat transfer theory ii)Steps in sizing equipment iii)Importance of heating and cooling load calculations iv)Relationships between load, equipment and duct v)Location of ducts/proper installation/sealing vi)Why match condensers, evaporators and blowers?
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Produktdetaljer

ISBN
9781418066642
Publisert
2009-06-17
Utgiver
Vendor
Delmar Cengage Learning
Vekt
976 gr
Høyde
269 mm
Bredde
213 mm
Dybde
22 mm
Aldersnivå
06, P
Språk
Product language
Engelsk
Format
Product format
Heftet
Antall sider
464

Biographical note

John Hohman has over 35 years as a member of RSES. He has also held positions as n installer, serviceman, designer, and engineer in HVACR. He holds a patent in cascade refrigeration. He is an instructor, department chair, and administrator for several colleges. He is also a consultant and trainer for the industry. Joseph Moravek is the HVACR director at Nance Universal HVACR Technical School in Beaumont, Texas, where he is responsible for short- and long-term training course development and updating curriculum. He also occasionally teaches local and overseas HVACR classes for Nance. In addition, he serves as a consultant with Mechanical Training Service, Houston, Texas, doing EPA training, continuing education for contractors and other custom developed coursework. A licensed air conditioning and refrigeration contractor in the state of Texas, he holds several ICE and NATE certifications, is a member of the ASHRAE, CARE and AEE professional organizations and has a master's degree in education. Mr. Moravek started in the HVACR profession in 1976 doing heat load calculation for a federally-funded weatherization program. His experience also includes working as an HVACR technician and inspector for the city of Houston. He served as the HVACR lead instructor at Lee College for 14 years.