Symbols and Wiring Diagrams: Pictorial Diagrams

 Pictorial Diagram Features:

• Field Wiring:
  • Represented by dotted lines.
  • Indicates wiring required by the installer or technician.
• Factory Wiring:
  • Represented by solid lines.
  • Includes pre-wired components at the factory.
• Optional Components:
  • Represented by dashed and dotted lines.
  • Indicates components that may or may not be present.

Example of a Pictorial Diagram:

• Components shown include:
  • Contactor
  • Dual run capacitor
  • Compressor
  • Condenser fan motor
  • Optional crankcase heater
  • Low pressure switch
• Field Wiring:
  • Line voltage wiring from the disconnect to the unit (L1 and L2) shown as dashed lines.
  • Ground connection is also represented by a dashed line.
• Factory Wiring:
  • Solid lines show wiring pre-done at the factory to components like the compressor, condenser fan, and run capacitor.
• Optional Component Wiring:
  • Crankcase heater wiring shown with alternating dashes and dots, indicating it may or may not be included.

Low Voltage Circuit Field Wiring:

• Thermostat wiring from the transformer and to the outdoor unit.
• Represented by dashed or dotted lines.

Diagram Overview:

• Schematic diagrams on the right (previously discussed).
• Pictorial diagram on the left showing the actual layout and color-coded wires.

Additional Information on Wiring Diagrams:

• Color-Coded Legend:
  • Located at the bottom right of the diagram.
  • Indicates standard wire colors (e.g., Y for yellow, BK for black, BL for blue).
• Component Codes and Legends:
  • Located on the left.
  • Important for understanding abbreviations and corresponding components.
• General Notes:
  • Provide additional electrical service information.