This book covers how to troubleshoot refrigeration cycle problems and compressor circuit problems. Both R-22 and R-410A refrigerants are covered. 296 pages of repair information

Air Conditioning Service Guide: R-410A and R-22

Michael Prokup

Reference

ESCO Institute

Over the years, much has been written on the subject of pressure enthalpy. Although much of this material has been geared toward engineering and system design, this book presents the important concepts of pressure enthalpy in a manner that will appeal to the service technician. Each refrigerant has its own properties and these properties are compiled on the pressure enthalpy chart for that particular refrigerant. Pressure enthalpy charts should not be confused with pressure/temperature charts, which only provide information regarding saturated refrigerants. The pressure enthalpy chart enables us to create a complete picture, or "snapshot" of the entire system. With a completed pressure enthalpy plot, we can look at sensible and latent heat transfers, while looking at the major system components…all at the same time. The book starts by reviewing the basic vapor-compression refrigeration cycle, as well as the concepts of superheat, subcooling and the pressure/temperature relationship. The book then turns to pressure enthalpy and the p-h chart, giving an overview of the meaning and purpose for every line on the chart. Simplified charts are used to clarify the explanations. The plotting of actual systems follows next. With the completed plot in hand, we next turn to the evaluation of the system parameters that allow for the calculation of many system characteristics, including system capacity and system efficiency. Once we have learned to plot systems on the chart, we then start looking at systems that are operating with malfunctions such as dirty air filters, refrigerant overcharge, refrigerant undercharge, etc. It is here that the reader can appreciate the power of the pressure enthalpy chart and its usefulness to effectively and accurately start up, troubleshoot and evaluate air conditioning and refrigeration systems.

Pressure Enthalpy Without Tears

Eugene Silberstein, M.S., CMHE, BEAP

Over the years, much has been written on the subject of psychrometrics, or the study of air. Although much of this material has been geared toward engineering and system design, this book presents the important concepts of air in a manner that will appeal to the service technician. Knowing all there is to know about an air sample is pretty empowering, so this book starts by discussing the basic properties of air and how these properties relate to each other. The psychrometric chart is introduced to provide a visual representation of how air behaves when exposed to different conditions. Once the basics of the chart are covered, we then move into some more interesting topics such as sensible heat ratio, bypass factor and apparatus dew point temperatures. These properties help determine system performance and are very important concepts to learn in order to fully understand air. The plotting of actual systems follows next. This involves plotting out air distribution systems that are operating correctly so that we can see what properly operating systems look like on the chart. This book covers a wide range of systems that includes residential heating and cooling systems, as well as commercial systems that provide ventilation air to the occupied space to meet building code requirements. We will discuss mixed air systems and learn to calculate the mixed air conditions provided we know what the outside air and return air conditions are. In addition to everything mentioned already, we will discuss the concepts of ventilation, economizing and air balancing.

Psychrometrics Without Tears

Crafts, Hobbies & Home

Home Improvement & Design

In today's ever changing technical world, service technicians must be highly skilled and have a solid understanding of refrigeration and air conditioning concepts. In addition, technicians must stay abreast of current industry development and improved techniques. Troubleshooting and Servicing Modern Air Conditioning and Refrigeration Systems gives service technicians all the information needed to accurately diagnose and solve various systems problems. The book details a variety of topics and troubleshooting procedures, including the following: Refrigerant pressures, states, and conditions, Subcooling and superheat, Compression systems, Metering devices, System charge, Diagnosing air conditioning systems, Systematic troubleshooting, Alternative refrigerants, Refrigerant blends an oils, Leak detection - evacuation and clean up procedures, Ozone depletion and global warming. 
Troubleshooting and Servicing Modern Air Conditioning and Refrigeration Systems discusses the changes affecting the refrigeration and air conditioning industries with an emphasis on the phaseout of CFC and HCFC refrigerants. Detailed sections on the most current leak detection and evacuation methods are included, as well as a section on alternative refrigerants and retrofit guidelines. The book also includes refrigerant changeover guidelines for the following conversions: R-12 to R-134a; R-12 to R-401A; R-12 to R-401B; R-502 to R-402A/R-408A; and R-502 to R-404A/R-507. 
Troubleshooting and Servicing Modern Air Conditioning and Refrigeration Systems is a 251 page soft cover that is written in easy to understand language and utilizes a large number of illustrations, tables, and photos. This book will provide service technicians with the practical, hands on information needed to successfully troubleshoot and service today's increasingly complex air conditioning and refrigeration systems.

Troubleshooting and Servicing Modern Air Conditioning and Refrigeration Systems

Engineering & Transportation

John Tomczyk

Engineering

Electrical problems account for more than 80% of all service scenarios. "Electricity for HVAC&amp;R - A Guide to Troubleshooting" provides the technician with the information necessary to successfully diagnose electrical problems. "Electricity for HVAC&amp;R - A Guide to Troubleshooting", is a practical view of what electricity is and how it works. It is more than just a textbook. Each subject is addressed by answering the most frequently asked questions about electricity. 
Every effort has been made to keep it simple. The small in size format of the AnswerMan series of books makes it easy to keep big information readily at hand.

Electricity for HVAC & R: A Guide to Troubleshooting (Answer Man Pocket Reference: HVAC&R Reference Guide, Vol. 3)

The Unviersal R-410A Safety Training Manual covers the necessary training and practical knowledge to safely service systems containing R-410A and R-407C, the R-22 phase-out, appropriate refrigerant and oil applications, service techniques, and safe handling of R-410A.

The HVAC/R Professional's Field Guide to Universal R-410a Safety & Training: Delta-T Solutions (This is a safety and training guide, the cylinder is NOT included)

Joe Nott

Dick Shaw

Refrigerant pressures, states and conditions are covered, as well as how they apply to the refrigeration system. Vapor pressures, subcooling, superheat, saturation, latent heat, and sensible heat are explained and applied to the refrigeration cycle. Basic system components, their functions and applications are included. Detailed explanations of each point in the refrigeration cycle will clarify questions the reader may have. 
Definitions and system applications of subcooling and superheat are also included in this module. Condenser subcooling, total subcooling, evaporator superheat and total superheat are explained with examples as they apply to the basic refrigeration cycle. Friction and static pressure losses, with examples and applications, gives the reader a thorough understanding of how much subcooling is needed in any system. 
Advanced topics such as; liquid pressure amplification, superheat suppression, floating head pressure, and refrigerant control systems are included. 
This module includes a detailed explanation of refrigerant metering devices which include; thermostatic expansion valves, automatic expansion valves, and capillary tubes. Application, sizing, and troubleshooting under varying system operating conditions are explained. 
System charging procedures as they apply to these various types of air conditioning and/or refrigeration systems are included. Charging charts and charging curves with examples of system applications give the reader a thorough understanding of system charging when reading this module.

Basic Refrigeration & Charging Procedures

System Diagnostics and Troubleshooting Procedures provides the reader with the necessary information to successfully diagnose air conditioning and refrigeration system problems. The manual details systematic troubleshooting and diagnostics of airflow problems, refrigerant cycle malfunctions, suction and liquid line restrictions, oil logged evaporator, undercharge, overcharge, compressor inefficiencies, dirty condenser, air in the system, restricted metering device, and low and high condenser entering air temperatures.

System Diagnostics and Troubleshooting Procedures

Fundamental Refrigeration covers all the basic principles and theories of refrigeration and air conditioning systems. Written in easy to understand language, this book contains a wealth of necessary fundamental knowledge. A low-tech, low stress introduction to the mechanical vapor compression cycle. Covering a broad range of information about refrigeration and air conditioning systems, this book is not only for those entering the field, but also for seasoned professionals who want a solid review of the basic principles.

Fundamental Refrigeration

Education & Teaching

George Gunter

Schools & Teaching

Provides an in-depth understanding of envelope and duct leakage testing procedures, methods of expressing results, and terminology. Content includes: energy efficiency, blower door testing method for whole house leakage rate, duct testing methods for total leakage and leakage to the outside.To comply with the International Energy Code, over half of the states now require duct testing for both new construction and retrofit. Duct and Envelope Testing provides an in-depth understanding of envelope and duct leakage testing procedures, methods of expressing results, and terminology. Content includes: energy efficiency, blower door testing method for whole house leakage rate, duct testing methods for total leakage and leakage to the outside.

Duct and Envelope Testing

Erik Rasmussen

Randy F. Petit Sr.

John Diem

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