Autocad How to Change Active System When Drawing Duct
Using the Styles Browser Palette
Search and select a duct with a predefined system, located in different drawings, folders and locations using the Styles Browser palette.
- Drawing Source: Choose from the drop-down list
- Drawing File: Choose from the drop-down list
- Search : Enter the name of the duct you are searching for
- Select the duct from the gallery. Click
to import it into the drawing, and 
to start drawing with it.
Using the Properties Palette
- You can also directly add a duct with a predefined system by selecting a duct from
- In the HVAC workspace, open the Properties palette in one of the following ways:
- Add a description and specify a system.
Click the
icon to search, import () and add () a new duct system definition using the Styles Browser. - Select a routing preference, duct shape, and duct size.
Click the
Use the instant sizing tool: icon to search, import () and add () a new duct routing preference using the Styles Browser. - To separate the duct into smaller parts, select Yes in the Specify Cut Length and enter a value for Cut Length.
- Specify a coordinate system and value for Elevation:
To… then… draw a run at a defined elevation select an elevation name for Elevation. draw a run at a specified elevation relative to a wall or other duct or duct enter the desired elevation, specify justify and offset. Use AutoCAD snaps or AutoCAD MEP 2022 toolset snaps to specify points on the wall, duct, or other objects. start a branch at a specified elevation on a riser enter the desired elevation and use AutoCAD MEP 2022 toolset snaps to specify a point on the riser. start a branch from a vertical run with a riser at a specified elevation enter the desired elevation and use AutoCAD MEP 2022 toolset snaps to specify a point on the vertical run. extend a sloped duct or duct segment to a specified elevation enter the desired elevation, Slope format, and a value for Slope. Then use AutoCAD MEP 2022 toolset snaps to specify the endpoint of a sloped duct or duct. If you lock the elevation of the duct and connect it to an object, the object's elevation is not inherited by the duct.
- Specify the offset in either direction:
To specify… select… the horizontal offset Left, Center, or Right justification. Enter the horizontal distance of the run from the wall or other objects. the vertical offset Top, Center, or Bottom justification. Enter the vertical distance of the run from the ceiling or other objects. - Select a routing method:
To… then… use the default bend method elbow is default bend method. All bends are drawn as elbows unless you specify differently. define your bend method in the Properties palette select offset or transition-offset from the bend method drop-down. Click the Lock icon next to bend method your choice. All bends are drawn with the selected bend method. draw with multiple bend method select the elbow, offset, or transition-offset bend methods from the drop-down as you draw. If you do not specify a bend method, then the bend is drawn as an elbow. draw with a predefined bend angle select a bend angle. define your own bend angle in the drawing area select User Defined, and specify a point for the bend angle. You can draw with or without the Compass. define your own bend angle in the Properties palette enter a value for the bend angle. draw with only the selected bend angle click the Lock icon next to bend angle. The next segments you draw will have the same bend angle. - Specify a start point, and continue specifying points to add more segments to your run.
Connection fittings are inserted to connect each segment as you draw.
- Change the elevation as needed, and continue specifying points to add more segments to your run.
By default, a vertical segment is added when you change the elevation.
Note: For more options when creating a duct, see the duct advanced properties.
Friction and velocity are read-only and automatically refreshed when the flow rate changes.
Source: https://knowledge.autodesk.com/support/autocad-mep/learn-explore/caas/CloudHelp/cloudhelp/2022/ENU/AutoCAD-MEP/files/GUID-1E076CAA-BE5F-40E4-ACB1-B2795B6C0B95-htm.html
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