HVAC Controls Operation & Maintenance Third Edition By Guy W. Gupton, Jr.
Foreword
This book is one in a series addressing building systems design, operation, and maintenance.
The material presented in this book can be used for office reference, for formal in-house training programs, and for informal self study. The material is not intended to be used as a replacement for manufacturers’ instructions for specific equipment.This book is written to provide a complete and concise reference volume for persons engaged in the operation and maintenance of automatic control systems serving building heating, ventilating, and air conditioning systems, including refrigerating machines, and interface to building automation systems (BAS) systems. Energy management and control system (EMCS) are of such diverse types and arrangements that it is not possible to cover them in this book. This book assumes a basic familiarity with HVAC equipment and systems and the related control systems. In order to allow use of the book as a study guide, the first chapters review HVAC system processes and equipment, control system types and equipment, and equipment-to control interactions. The succeeding chapters cover specific control system functions including electrical interlock and motor starting, electrical and electronic control system diagrams, pneumatic control system diagrams, maintenance of electric and electronic control systems, maintenance of pneumatic control systems, testing direct digital control (DDC) systems, and training operating and maintenance personnel. The Appendix includes a comprehensive glossary of terms used in HVAC systems and in control system operation and maintenance.
Preface to the Third Edition
In the four years since the publication of the second edition of this book, there have been continuing changes in the automatic temperature control industry due to the widespread use of direct digital control (DDC) systems. This book is intended to provide guidance in the operation and maintenance of all types of ATC systems. At the time of writing the first edition, the majority of systems in use were of the electric/electronic and pneumatic types. With the rapid increase in installations of DDC systems, it became necessary to include material in the second edition that will provide basic coverage of DDC systems. This book includes basic procedures in the operation and maintenance of DDC systems, particularly in the initial checkout and operator training on newly installed systems. Those procedures are also applicable to the recommissioning of existing DDC systems and in recurrent training of DDC system operators and maintenance technicians. The complexity of DDC system programming and the major differences in program language between system manufacturers, limits the discussion in this book of the actual programming of DDC systems. That type of information is application specific and must be obtained from the system manufacturer’s literature and training seminars.
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