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Inserting Eccentric Transitions

Posted on July 29th, 2010. Last updated on June 14th, 2023.

To insert an eccentric transition or an eccentric reducer using Design Master HVAC, you need to change the Horizontal Alignment on your ductwork to Flat on Right or Flat on Left.

To do this, use the Query Duct or Edit Multiple Ducts command and change the setting there.

You can also set this when initially inserting the duct.

When you change this, the duct centerline will define the edge of the duct instead.

Eccentric Transitions

If you change the offset in the middle of the run, the ductwork will not line up. An entire run of ductwork should be set to the same offset. You can change your offset when you branch at a tee or when you turn at an elbow.

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Inserting Ductwork Transitions

Transitions can be added to a straight section of ductwork using the Break Duct command.

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Inserting Turning Vanes

Turning vanes can be inserted manually when you insert square elbow and wye fittings, or you can set them to be inserted on those fittings by default in the project customization options.

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Many Design Master dialog boxes can be navigated using keyboard shortcuts. Here is a table of common shortcuts and instructions on how to find what shortcuts are available in each dialog box.

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Changing Duct Offset in the Middle of a Duct Run

When changing the offset in the middle of a duct run, insert a transparent duct so the ductwork will be modeled correctly.

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