Rectangular Components - Internal Damper
- Last UpdatedJan 13, 2026
- 2 minute read
The task of creating an HVAC Component is initiated from the HVAC Window.
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Select Rectangular in the Categories drop-down list and then Internal Damper in the Available Type drop-down list to display the Internal Damper window:
You are required to input the following dimensions:
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Duct width AA
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Duct depth AB
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Dist from Leave
Note: The fields will be pre-populated with default dimensions. These dimensions are governed by the details defined in the HVAC Catalog.
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To visualize how the dimensions equate to the actual piece of HVAC select Picture to display a detailed drawing for Rectangular Components Catalog Element - Internal Damper.
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Select Transpose width/dept to exchange the Duct width AA dimension with Duct depth AB dimension.
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In Handle Direction specify the axis to be used. Valid axes are E (East), N (North), U (Up), -E (negative East), -N (negative North) or -U (Negative Up).X, Y, Z, -X, -Y or -Z.
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The Clash Vol fields will be pre-populated with the obstruction volumes associated with the access panel and the ducting, but can be changed.
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In the Connect list, select Connect or Unchanged:
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Select Connect (default when Create is selected) - connects the piece of HVAC to the previous one.
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Select 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.
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Select Defaults to reset all the fields back to when the Internal Damper window was opened.
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Select Fit To Next to orientate the Internal Damper to automatically match the outlet (p-leave) of the previous piece of HVAC to the inlet (p-arrive) of the next piece.
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Select OK to create the Internal Damper component and close the Internal Damper Window. You will be returned to the HVAC Window.
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Select Cancel to discard all field changes and close the Internal Damper window.