Pipe system definitions specify display information, such as pipe display by size, layer key settings, rise/drop display style, and other display properties. You typically associate a system definition to a type of pipe system, such as chilled water or steam. The settings for a system definition control many of the display properties of a pipe system. You assign a layer key style to a system definition. This designation dictates the layer, color, and linetype for the system. You can also configure a system definition to display pipes as 1-line or 2-line by size.
You can assign a system definition to a system group. In the software, pipe runs that have different system definitions cannot connect to each other without changing the system for the connecting pipe run. You can, however, assign a system group to different system definitions. This allows pipe runs from different system definitions to connect while maintaining the same system for each run. For example, you can assign the same system group to Heating Hot Water - Supply and Heating Hot Water - Recirculation. You then can connect pipe runs between these 2 systems while maintaining their original system settings.
The default templates include many pipe system definitions, such as chilled water, heating hot water, and steam. Pipe system definitions are stored with a drawing. You can use different system definitions for different drawings, and you can share system definitions between drawings.