Although it is no longer available from the publisher, we'll query our network of used bookstores for you and send an update within one to two weeks . This title is currently on back order. We do not have a reprint date for this title, but we expect to be able to ship it to you within 3-5 weeks. Inc. A text dedicated to the operation, troubleshooting, and repair of 57 different electric and electronic control for heating, ventilation, air-conditioning, and refrigeration systems. Controls treated include gas valves, humidistats, bypass timers, solenoid valves, electromagnetic relays, modulating motors, commercial defrost systems, current sensing relays, and integrated furnace control modules.
Introductory sections explore the basic types of control systems and explain basic control theory.
In addition, a six-step troubleshooting procedure is presented and 15 practice labs let students exercise their troubleshooting skill. From the Back Cover It uses an accessible conversational style that integrates the jargonencountered in the refrigeration and air conditioning field, and includes a lab section with 15 separate labs and accompanying lab sheets. Presenting each control separately in its own self-contained unit, this book explores the operating sequence for each control, highlighting how it works, its many applications, and how to test it in the field. Introduces a method of checking and troubleshooting a control when a problem occurs, and provides several troubleshooting problems for each control.