i need help. i am trying to put together a few things, a condenser, accumulator, and a few other items on a condensing unit using inventor 2010 routed systems. in trying to run the pipe i have never done that before and i am trying to teach myself but im not having much luck. i've watched youtube videos and cant figure it out completely. i having issues like the tubes r not coming out of the unit but going inside and the path isnt letting me change the way it makes contact with the unit. im basiclly lost. please help 

chels: You might try asking your question either at the Inventor Discussion Group (AutoDesk website) or over at another help site called CADTutor.