Circuitry & Diagrams
The installation mechanic depends this for the correct installation of the wiring to the unit.
Wiring Diagram
A device that creates a magnetic field when energized and causes some action to an electric component.
Solenoid
Most manufacturers use the same type for electric components.
Similar Symbols
Takes electric energy and converts it to heat, and in some cases, it is used to heat homes.
Heater
They are the most important part of a heating, cooling, or refrigeration system because they do all the work in the system.
Loads
A light that is illuminated to denote a certain condition in a system.
Signal Light
An electrical device that consumes electric energy to rotate a device in an electric system.
Motor
This tells you what purpose the motor serves in the system.
Letter Designation