Branch Connectors Components - Circular Boot c
- Last UpdatedJan 27, 2026
- 2 minute read
The task of creating an HVAC Component is initiated from the HVAC Window.
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Select Branch Connector in the Categories drop-down list and then CIRCULAR Boot c in the Available Type drop-down list to display the Boot Brconnector window:

The user is required to input the following dimensions:
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Boot Diameter
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MAIN width LA
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MAIN depth LB
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Boot Length
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Dist from Leave
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B offset
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Boot Extension
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Fixing to Duct
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Male Collar
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Inner Extension
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To visualize how the dimensions equate to the actual piece of HVAC, click Picture to display a detailed drawing for Branch Connectors Catalog Element - Circular Boot.
Note: The fields will be pre-populated with default dimensions. These dimensions are governed by the details defined in the HVAC Catalog. The End Extension default is auto but can be changed by the user to a required dimension. The Fixing to Duct joint default is joint defined in the HVAC Catalog but can be changed by the user to the required joint.
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Click Transpose width/depth to exchange MAIN width LA dimension with MAIN depth LB dimension.
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Specify a type of joint to use for the Boot Jnt (Boot Joint). Refer to Create / Modify HVAC Components for a detailed description.
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After selecting the type of joint to use for the Boot Jnt, the user must enter the Boot Direction.
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In Boot 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.
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In the Connect list, select Connect or Unchanged:
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Click Connect (default when Create is selected) - connects the piece of HVAC to the previous one.
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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.
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Click Defaults to reset all the fields back to when the Boot Brconnector window was opened.
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Click Fit To Next to orientate the Boot Brconnector to automatically fit this piece of HVAC to the next piece.
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Click OK to create the Boot Brconnector component and close the Boot Brconnector Window.
The user will be returned to the HVAC Window.
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Click Cancel to discard all field changes and close the Boot Brconnector window.