I'm using Revit MEP 20112 and for our Srprinkler plans we show the ceilings/diffusers/lights to help with coordination, which means we use the reflected ceiling plans in revit. Because you're looking up at the ceiling in the reflected ceiling plans, our rise/drop symbols are backwards from normal. However, both my rise and drops are showing up as the defined rise symbol. When I change my drop symbols to match what they should be, nothing changes. So when I set my rise symbol correctly my drops look like rises and there doesnt seem to be any way to change this. Any help on this issue would be appreciated!
What I do (since the Reflected Ceiling Plan doesn't look how I want) is create a "Ceilings only" plan in RCP, and only show the ceilings. create a separate "Floor Plan" with sprinklers, lights, etc. turned on. place both views on a sheet. Make sure the ceilings only plan is wireframe, so it doesn't hide anything. It's a work-around, but it should make the pipe rise/drops show correctly.
I also have a separate "coordination" plan with everything turned on to do coordination outside of a sheet view.