Circular Components - Roof Cowl
- Last UpdatedJan 13, 2026
- 2 minute read
The task of creating an HVAC Component is initiated from the HVAC Window.
-
Select Circular in the Categories drop-down list and then Roof Cowl in the Available Type drop-down list to display the Roof Cowl window:

The user is required to input the following dimensions:
-
Duct Diameter
-
Cowl Diameter
-
Cowl Height
-
Duct to Cone
-
-
To visualize how the dimensions equate to the actual piece of HVAC, click Picture to display a detailed drawing for Circular Components Catalog Element - Circular Weather Cowl.
Note: The fields will be pre-populated with default dimension. These dimension are governed by the details defined in the HVAC Catalog.
-
Specify a type of joint to use for the Arrjoint (Arrive Joint). Refer to Create HVAC Component for a detailed description.
-
In the Connect list, select Connect or Unchanged:
-
Click Connect (default when Create is selected) - connects the piece of HVAC to the previous one.
-
Click Unchanged (default when Modify is selected) - positions the component at the co-ordinates 0.00.
Note: Unchanged is usually used, when Modify is selected, it does not connect the component but positions it at 0.00, in effect in a floating position.
-
-
Click Defaults to reset all the fields back to when the Roof Cowl window was opened.
-
Click Fit to orientate the Roof Cowl to automatically match the outlet (p-leave) of the previous piece of HVAC to the inlet (p-arrive) of the next piece.
-
Click OK to create the Roof Cowl component and close the Roof Cowl Window.
The user will be returned to the HVAC Window.
-
Click Cancel to discard all field changes and close the Roof Cowl window.