ENGINEERING MANUAL OF AUTOMATIC CONTROL
iii
FOREWORD
The Minneapolis Honeywell Regulator Company published the first edition of the Engineering Manual of
Automatic Control in l934. The manual quickly became the standard textbook for the commercial building
controls industry. Subsequent editions have enjoyed even greater success in colleges, universities, and contractor
and consulting engineering offices throughout the world.
Since the original 1934 edition, the building control industry has experienced dramatic change and made
tremendous advances in equipment, system design, and application. In this edition, microprocessor controls are
shown in most of the control applications rather than pneumatic, electric, or electronic to reflect the trends in
industry today. Consideration of configuration, functionality, and integration plays a significant role in the
design of building control systems.
Through the years Honeywell has been dedicated to assisting consulting engineers and architects in the
application of automatic controls to heating, ventilating, and air conditioning systems. This manual is an outgrowth
of that dedication. Our end user customers, the building owners and operators, will ultimately benefit from the
efficiently designed systems resulting from the contents of this manual.
All of this manual’s original sections have been updated and enhanced to include the latest developments in
control technology and use the International System of Units (SI). A new section has been added on indoor air
quality and information on district heating has been added to the Chiller, Boiler, and Distribution System
Control Applications Section.
This third SI edition of the Engineering Manual of Automatic Control is our contribution to ensure that we
continue to satisfy our customer’s requirements. The contributions and encouragement received from previous
users are gratefully acknowledged. Further suggestions will be most welcome.
Minneapolis, Minnesota
December, 1997
KEVIN GILLIGAN
President, H&BC Solutions and Services
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