Reading Schematic Diagrams

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Reading Schematic Diagrams

• Electricity for Refrigeration, Heating and Air
  Conditioning 7th Edition

Chapter 6 Reading Schematic Diagrams
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Reading Schematic Diagrams

• Upon completion of this chapter the student will
  be able to

• Read and interpret the schematic a dehumidifier
• Read and interpret the schematic of a window air
  conditioner
• Read and interpret the schematic of a
  walk-in-cooler
• Read and interpret the schematic of a commercial
  freezer
• Read and interpret the schematic of a gas furnace
  with a standing pilot
• Read and interpret the schematic of a small
  packaged residential air conditioner
• Read and interpret the schematics commercial
  air-conditioning systems with control relays

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Reading Schematic Diagrams

• Upon completion of this chapter the student will
  be able to

• Read and interpret the schematics commercial
  air-conditioning systems with lockout relays
• Read and interpret the schematics of two-stage
  heating and two-stage cooling systems
• Read and interpret the schematics of heat pumps
  with defrost boards and defrost timers
• Read and interpret the schematic of a commercial
  refrigeration system with pump down
• Read and interpret most diagrams found in the
  refrigeration, heating, and air-conditioning
  industry

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Key Terms

• Balance Point
• Combustion Chamber
• Control Relay
• Defrost Cycle
• Dehumidifier
• Gas Furnace
• Heat Pump
• Light Commercial Air-Conditioning Systems
• Limit Switch
• Line Voltage Control Systems
• Lockout Relay
• Low-Voltage Control System
• Multistage Thermostat
• Pump-down Control System
• Set Point
• Short Cycle

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Schematic Diagram Design

• The schematic diagram resembles a ladder in that
  it is made up of two vertical lines representing
  the incoming electrical sources.
• The electrical source is electrical energy being
  supplied to equipment.
• The schematic wiring diagram uses symbols to
  represent electrical components in the system.

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Schematic Diagram Design
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Schematic Diagram Design
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Schematic Diagram Design
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Schematic Diagram Design
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Schematic Diagram Design
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Schematic Diagram Design
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Schematic Diagram Design
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Schematic Diagram Design
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Schematic Diagram Design