Now in its fourth edition, Electricity and Controls for HVAC/R equips readers with the information needed to work effectively with all types of motors and control devices found in the heating and air conditioning industry. Prior knowledge of electricity is not required as this book begins with discussion of essential basic electricity and electrical circuits concepts. Numerous schematic diagrams, plus step-by-step troubleshooting procedures, are included to acquaint readers with all of the different types of circuits commonly encountered in the HVAC-R field. With an eimphasis on electrical safety, plus an all-new troubleshooting unit, this edition of Electricity and Controls for HVAC/R also features expanded information on thermostats, short cycle timers, heat pressure controls for refrigeration, variable frequency drives, and more!two-pole breaker Circuit breaker used for connecting a 240- volt single-phase circuit. two-speed compressors ... Commonly used to operate light loads such as ceiling fans and blower motors. varistor A resistor that changes its resistance value with a change of voltage. ... waveform The shape of a wave obtained by plotting a graph of voltage with respect to time. wiring diagram An electrical diagram usedanbsp;...
|Title||:||Electricity and Controls for HVAC/R|
|Author||:||Stephen L. Herman, Bennie L. Sparkman|
|Publisher||:||Cengage Learning - 2000|