This is an easy one... you can't really. But this post will show how it works. Please comment if you have more to add on this topic.
As seen in the Type Properties dialog below...
the Pipe System has several Rise/Drop symbol parameters "single line" (Detail Level = Course or Medium) and"two line" (Detail Level = Fine). The symbol options listed are hard wired.
The size of the symbol can be controlled in the Revit MEP dialog as shown below...
The Rise and Drop symbol is tied to the pipes position relative to the View Range settings as graphed in the following image. Notice ceiling plan views just don't work.
As seen in the Type Properties dialog below...
the Pipe System has several Rise/Drop symbol parameters "single line" (Detail Level = Course or Medium) and"two line" (Detail Level = Fine). The symbol options listed are hard wired.
The size of the symbol can be controlled in the Revit MEP dialog as shown below...
The Rise and Drop symbol is tied to the pipes position relative to the View Range settings as graphed in the following image. Notice ceiling plan views just don't work.