Sometimes you want to use unique or personalized symbols in your diagram that are not in the library. The arrows show the direction of the airflow. Often if they are using the same CAD program and the symbols that are standard with the program then you will see similarities.
Each of these symbols will have a specific purpose and should be interpreted accordingly. In the symbol section of EdrawMax, you will find over , vector-based symbols that you can use in your designs. “Hvac Schematic Symbols Chart”
