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Circular Mitred c (CBC)

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  • Last UpdatedMay 21, 2026
  • 2 minute read

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

  1. Select Branch Connectors in the Categories drop-down list and then CIRCULAR, Mitred c in the Available Type drop-down list to display the Mitred Brconnector window:

  2. You are required to input the following dimensions:

    • Branch Connector Diameter

    • MAIN Width LA

    • MAIN Depth LB

    • Branch Connector Length

    • Distance from Leave

    • B offset

    • Branch Connector Extension

    • Fixing to Duct

    • Male Collar

    • Inner Extension

  3. To visualize how the dimensions equate to the actual piece of HVAC, click Picture to display a detailed drawing for Circular Mitred (CABC).

    Note: The fields will be pre-populated with default dimensions. These dimensions are governed by the details defined in the HVAC Catalogue. The Branch Connector Extension default is auto but can be changed by you to a required dimension. The Fixing to Duct joint default is joint defined in the HVAC Catalogue but can be changed by you to the required joint.

  4. Click Transpose Width/Depth to exchange MAIN Width LA dimension with MAIN Depth LB dimension.

  5. Specify a type of joint to use for the Branch Connector Joint. Refer to for a detailed description.

  6. After selecting the type of joint to use for the Branch Connector Joint, you must enter the Branch Connector Direction.

  7. In Branch Connector Direction specify 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.

  8. In the Position 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 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.

  9. Click Defaults to reset all the fields back to when the miterd Brconnector window was opened.

  10. Click Fit To Next to orientate the miterd Branch Connector to automatically fit this piece of HVAC to the next piece.

  11. Click OK to create the miterd Branch Connector component and close the miterd Brconnector Window. You will be returned to the HVAC Window.

  12. Click Cancel to discard all field changes and close the miterd Brconnector window.