Autodesk 235B1-05A761-1301 - AutoCAD MEP 2010 User Manual page 724

To add the duct connector using a primitive
13 In the part browser, click
14 In the Insert Primitive dialog, select Undefined Duct Connector - Round, and click Insert.
15 On the command line, select the XY plane of the cylinder.
16 Press ENTER to accept the default orientation and add the primitive to the diffuser.
17 Modify the values of the model dimensions:
18 Configure the duct connector.
706 | Chapter 14 Customizing Catalog-Based Content
TIP To cycle through overlapping objects, move the cursor over the object on top, then press and
hold SHIFT while pressing SPACEBAR repeatedly. To cycle through overlapping subobjects (faces,
edges, and vertices) on 3D solids, move the cursor over the subobject on top, then press and hold
CTRL while pressing SPACEBAR repeatedly.
This attaches the duct connector to the XY plane.
Expand Model Parameters, right-click a parameter, and click Edit.
For BdyD1, change the value of Equation to D1. This causes the diameter of the cylinder to
change when the diameter of the duct connector (D1) changes.
Change the value of Equation for the duct connector parameters so they reflect a more
appropriate default size, as shown in the following image.
Click Close.
Specify a connection type, and, if necessary, change the flow direction. For more information,
see Connectors of a Parametric Part
on page 720.
(Add Primitive).
on page 666 and Adding Connectors to a Parametric MvPart