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Hull and Outfitting

Inline Equipment Components - Circular Flanged Fire Damper c

Inline Equipment Components - Circular Flanged Fire Damper c

  • Last UpdatedJan 27, 2026
  • 2 minute read

The task of creating an HVAC Component is initiated from the HVAC Window.

  1. Select Inline Plant Equipment in the Categories dropdown list.

  2. Select CIRCULAR Flanged FD in the Available Type dropdown list to display the Circular Flanged FD window:

    You are required to input the following dimensions:

    • FFD Name(Ref)

    • Duct Diameter

    • Square Body Size

    • Body Flanged Size

    • Length

    • Arrive Extension

    • Leave Extension

  3. To visualize how the dimensions equate to the actual piece of HVAC, select Picture to display a detailed drawing for Inline Plant Equipment Catalog - Circular Flanged Fire Damper.

    Note: The fields will be pre-populated with default dimensions. These dimensions are governed by the details defined in the HVAC Catalog.

  4. Specify a type of joint to use for the Arrjoint (Arrive Joint) and Leajoint (Leave joint). For a detailed description, see Create / Modify HVAC Components.

  5. After selecting the type of joint to use for the Arrjoint and Leajoint, enter the Control Direction.

  6. In the Control Direction specify the axis that should 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.

    The Actuator fields will be pre-populated with default values but can be changed.

    The Clash Vol fields will be pre-populated with the obstruction volumes associated with the rectangular flanged FD component and the ducting, but can be changed.

  7. In the Connect list, select Connect or Unchanged:

    • Select Connect (default when Create is selected) - connects the piece of HVAC to the previous one.

    • Select Unchanged (default when Modify is selected) - positions the piece of HVAC at the co-ordinates 0.00.

    Note: Unchanged is usually used, when Modify is selected, it does not connect the piece of HVAC but positions it at 0.00, in effect in a floating position.

  8. Select Defaults to reset all the fields back to when the Circular Flanged FD window was opened.

  9. Select Fit to orientate the Circular Flanged FD to automatically match the outlet (p-leave) of the previous piece of HVAC to the inlet (p-arrive) of the next piece.

  10. Select OK to create the Circular Flanged FD component and close the Circular Flanged FD Window. You will be returned to the HVAC Window.

  11. Select Cancel to discard all the field changes and close the Circular Flanged FD window.

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