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HVAC Controls and Systems by John I. Levenhagen, Donald H. Spethmann


HVAC Controls and Systems by John I. Levenhagen, Donald H. Spethmann

This book presents engineers with solutions to the problems found in control applications in the commercial HVAC buildings industry. Using their experience to take readers beyond textbook principles, the authors offer suggestions for troubleshooting not found in any other book. Divided into two sections, HVAC Controls and Systems covers all aspects of commercial controls, including pneumatic, electric, and electronic controls. The first section discusses the hardware of the controls industry: thermostats and humidistats, dampers and damper motors, automatic valves, transmitters, auxiliary devices, construction systems and devices, and electronic products. The second section covers applications of the hardware for air handling unit systems, terminal systems and units, primary systems, heat pump cycles, distribution systems, supervisory systems, maintenance and operations, and total facility approach.


Filled with tips and techniques to pinpoint and solve all kinds of control system problems... Plant Engineering 19930601

About the Author

John Levenhagen is a consultant and retired engineer from Johnson Controls, Inc. He was formerly on the Board of Directors of the American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE) and past president of the the Milwaukee Council of Engineering and Scientific Societies. He has received the Distinguished Service Award of ASHRAE, among others. Donald Spethmann is a control engineering consultant and spend 40 ears as a control engineer with the Honeywell Commercial Buildings Group. His experience includes field, systems, applications, and advanced engineering. He holds more than ten patents, primarily dealing with control for energy conservation. He has been active on ASHRAE technical standards, and handbook committee.

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Book Info

Publication date

1st November 1992


John I. Levenhagen, Donald H. Spethmann

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McGraw-Hill Professional an imprint of McGraw-Hill Education - Europe


334 pages


Heating, lighting, ventilation
Automatic control engineering



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