Understanding Electricity and Wiring Diagrams for HVAC/R

Understanding Electricity and Wiring Diagrams for HVAC/R

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This book provides HVAC/R service technicians with exceptionally practical information on the unique wiring diagrams, methods, technician short-cuts, and potential pitfalls encountered on the job. It begins with a discussion of general electricity and electrical circuits, and then moves quickly into explaining wiring diagrams for HVAC and refrigeration systems, and the new devices that are encountered with each new diagram. It features accessible, technician-level explanations of electronics. Electrical Concepts. Simple Currents. Standing Pilot Furnaces. Heating/Air Conditioning Circuits. Troubleshooting Strategies. Testing and Replacing Common Devices. Repair Strategies. Commercial Systems. Motor Applications. Power Wiring. Testing and Replacing Motors and Start Relays. How Motors Work. Low-Voltage Room Thermostats. Electronic Ignition Gas-Fired Furnaces. Oil Heat. Electric Heat. Boilers. Heat Pump. Ice Makers. Miscellaneous Devices and Accessories. Wiring Techniques. DDC Controllers. For HVAC/R service technicians.The potential relay (figure 9-14) is used with a start capacitor and sometimes a run capacitor as well. The wiring for each is shown in figure 9-15. The coil of the potential relay is wired in parallel with the start winding. The potential relay switch anbsp;...

Title:Understanding Electricity and Wiring Diagrams for HVAC/R
Author:Robert Chatenever, Air-Conditioning and Refrigeration Institute
Publisher:Pearson College Division - 1999-05-01


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