Fundamentals of HVAC Control Systems (ASHRAE) 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. This book 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. This book will help you understand: Control theory, the basics of electricity, input and output devices, and the influence of input and output characteristics on control possibilities and performance How to use written specifications, schedules, and control diagrams to identify what is to be installed, how it is to be installed, and how it is expected to operate DDC (direct digital controls) system components, interoperability of controllers, network and data protocols Replacement, modification and maintenance of pneumatic and electric controls This book is a companion reader for the ASHRAE eLeaming course of the same name. However, this educational text can be used independently of the eLeaming course in the classroom and for individual study. For details on this and other ASHRAE eLeaming courses, visit: www.ashrae.org/elearning. Units: SI