This book provides a thorough introduction and a practical guide to the principles and characteristics of HVAC controls. It describes how to use, select, specify and design control systems. It is an excellent tool for building owners and operators, mechanical engineers, mechanical contractors, and facility engineers who wish to develop in-depth knowledge of HVAC Control Systems and improve their understanding and skills.ASHRAE, founded in 1894, is an international organization of some 50,000 persons. ASHRAE fulfills its mission of advancing heating, ventilation, air conditioning, and refrigeration to serve humanity and promote a sustainable world through research, standards writing, publishing, and continuing education. The ASHRAE Handbooks are the design standard for control of built environments with volumes on Systems and Equipment, HVAC Applications, Refrigeration and Fundamentals. Each is updated every four years. In addition to publishing design guidance for engineers, arc