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.After a time delay, a bimetal switch inside the heat sequencer operates the switch (es) that complete the circuit through the electric heating element. Time Delay Relay On simpler systems, when the room thermostat makes R-Y, it completes a 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|