You can use this dialog to specify parameters that control the elevations, duct size, and other characteristics for the ductwork created for the Main and Branch segments when using the Generate Layout tool.
- Main:
- Duct Type: specifies the type of duct to use for the selected System Classification.
- Offset: specifies the height of duct components for main sections of the systems. The absolute elevation of the ducts depends on the component that was selected when the system was created and view type you are using to create the layout. See the Note below.
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Branch
- Duct Type: specifies the type of duct to use for the selected System Classification.
- Offset: specifies the height of duct components for branch sections of the systems. The absolute elevation of the ducts depends on the component that was selected when the system was created and view type you are using to create the layout. See the Note below.
- Flex Duct Type: specifies the type of flexible duct to use for the selected System Classification (Flex Duct Round : Flex - Round, or None)
- Maximum Flex Duct Length: specifies the longest length of a flexible duct segment that will be used in routing solutions in the selected Branch duct system.
Attention: Because the absolute elevation of ductwork depends on several factors, open a 3D view to verify the absolute elevation for your ductwork when specifying main and branch Offset parameters. For example, a system having a mechanical component such as an AHU assigned, the level associated with that component is the reference level for the offset. However, when you lay out ductwork in a plan view for a system that you created without assigning mechanical equipment, the offset is relative to the view’s associated level.