HVAC Autofitting Preferences

Used to set preferences to standard placement settings and applied as default when placing fittings. It defines common settings for fittings applied automatically while routing. The preferences settings can be done to major HVAC fittings including Elbows, Branches and Transitions.

Accessed from:

Ribbon: AECOsim > Mechanical > Place Mechanical Systems > AutoFitting Settings

The preferences set are stored in the system and such properties get applied when placing fittings, say in routing. The settings such as radius, throat lengths and number of segments for elbows, divergence or convergence angles for transitions, and use of a particular take-offs, tees and crosses for branch lines. They are provided via graphical interface allows user to define standard placement settings. The preferences set in the HVAC Autofitting Preferences dialog are stored in an XML file. The default values however can be restored as required.

Setting	Description
Save	Saves the currently set preferences settings in Autofittingoptions.xml file located in the project workspace folder (variable BMECH_AUTOFITTINGOPTIONS_ FILE defines the path). The Save command will overwrite the previous settings saved in the XML file and close the dialog. Note: The initial settings seen after the Autofitting Preferences dialog is opened are those last saved and those set via the Set as Default AutoFitting Option if any, will precede over until you issue Save command.
Restore Default Settings	Retrieves the default preferences settings, preceding last saved settings, if any. You are prompted to save the retrieved preferences before you close the dialog.
Elbow	Sets preferences to all 3 shape elbows. Rectangular Elbow Settings Elbow Options — sets rectangular elbow type to one of the options: Radius Bend Mitered No. of Vanes — sets the numeric value that defines the number of vanes to rectangular elbow. Vane Type — sets rectangular elbow type to one of the options: Short — generates a curved vane with a radius defined by the Vanes Size for Radius Bend elbow and an angled vane if Mitered. Long — generates a curved vane extending to the elbow's outlets for Radius Bend elbow and an angled vane if Mitered. Vane Size — defines size of vanes; a numeric value uniformly applies to vanes set in the elbow. Radius Options - enabled for Radius Bend Elbow Options. Sets radius options to one of the following two: Radius — when set, the RadToDia (Radius to Diameter Ratio) follows changes of Radius. RadToDia — when set, the Radius follows changes of RadToDia. Value — sets the value to the radius option to follow in Autosize. Throat length (inch) — enabled for Mitered Elbow Options. Sets the depth to the elbow branch. The value is set in unit inch. Round Elbow Settings Elbow Options — sets round elbow type to one of the options: Stamped Segmented Bend Segmented Bend End Segment Mitered Radius Options — sets radius options to one of the following two: Radius — when set, the RadToDia follows changes of Radius. RadToDia — when set, the Radius follows changes of RadToDia. Value — sets the value to the radius option to follow in Autosize. Segments — enabled for Segmented Bend End Segment type elbow. Sets the number of segments to elbow. Segment Angle — enabled for Segmented Bend type elbow. Sets the angle for segmented bend elbow. No. Of Miters — enabled for Mitered type elbow. sets the number of segments to elbow. Sets the number of miters to the Mitered elbow. Oval Elbow Settings Elbow Options — sets oval elbow type, only option available is: Segmented Radius Options — sets radius options to one of the following two: Radius — when set, the RadToDia follows changes of Radius. RadToDia — when set, the Radius follows changes of RadToDia. Value — sets the value to the radius option to follow in Autosize. Segments — sets the number of segments to elbow.
Branch	Sets preferences to all 3 shape branch and tee fittings. Rectangular Branch Options Category — sets rectangular branch category to one of the options: Takeoff Tee/Crosses Fittings — sets branch fittings type to one of the following: For Takeoffs, the fittings options can be set to one of the following Angled — the rectangular takeoff type is selected in the preferences. Radius 1/ 2 /3 — the respective radius type takeoff is selected. For Tee and Crosses, the fittings option is set to following: Radius — the radius type tees and crosses are selected in the preferences. Square-Throat — the square throat type tees are selected in the preferences. Round Branch Options Category — sets rectangular branch category to one of the options: Takeoff Tee/Crosses Fittings — sets branch fittings type to one of the following: For Takeoffs, the fittings option is set to following: Round Angled — the round angled takeoff type is selected in the preferences. For Tee and Crosses, the fittings option is set to following: Round Tee — the default type tees and crosses are selected in the preferences. Oval Branch Options Category — sets rectangular branch category to one of the options: Takeoff Tee/Crosses Fittings — sets branch fittings type to one of the following: For Takeoffs, the fittings option is set to following: Oval Takeoff — the default type oval takeoff is selected in the preferences. For Tee and Crosses, the fittings option is set to following: Oval Tee — the default type tees and crosses are selected in the preferences.
Transition	Sets the transition angle limit. Transition Options Max Angle Limit (Degree) — sets the angle value to reducer to have a limit in a transition. This controls the conversion angle (supply to return sides angle) will automatically compute the length.

Note: The customization to autofitting options data in active dataset's data folder by manipulating externally will also effect in Autofittingoptions.xml.

Key-in: mdl load Bentley.Building.Mechanical.AutoFittingOptions.dll