Ran into a problem today with a fitting from a piping manufacturer.
We needed to run a vertical takeoff (vent) from a wye fitting on a sloped pipe. I had addressed this a long time ago, but because I never wrote it down, I forgot exactly what I did to make it work when I got the new content.
The image below shows my desired result:
Part one: You're project has to be setup to use pipe deflection, by specifying a pipe connector tolerance in the MEP settings dialog. (manage -> mep settings -> mechanical settings).
Part two: your fitting's connectors have to be "told" they can use this variable. To do this, you must open the fitting family.
Select each connector (or only the ones you want to use the "wiggle room" tolerance you just specified...)
... now here is the trick - if the connector system classification is set to "fitting" you can't do anything. (see image)... what you have to do, is click that "fitting" combo-box, and change the classification type to "global"
*Poof* a whole list of different properties populate the palette. (I'm glad I typed that, and didn't have to say it three times fast). Check the newly appeared "Allow Slope Adjustments" checkbox.
Change system classification back to "fitting", save, and load back to project. The fitting will now respond to the pipe connector tolerance.
