Testing every connector is necessary to ensure that the part size can connect intelligently to other building systems objects. Connectors are shown as graphical objects representing the size, shape, and location of connection points on a part size in your drawing. If the connection positions were assigned correctly, they should match the model block geometry of the part size. If the connection positions were not assigned correctly, the connectors may appear as graphical objects floating in space. To verify the connection position of each connector, snap to the correct location and connect a segment. A valid connection should be made and you should be able to continue to draft the run.
It is also important to test the connection direction vectors. To do this, you connect a valid building systems object to every part connector for each part size and draft a run. Verify that the default direction of the Compass lets you lay out the building systems objects in the correct direction away from the part size.