Drafting Tip – Modelling Equipment Families – Check the Level and Centre Reference Planes

Before you start your family, think of where the base of the family will sit. When I click on a Fan Coil Unit, I want the properties to display the Underside height. So I build these families with the base on the reference level.

An axial fan on the other hand I would build around the centre line.

An Air Terminal is built around the centre of the grille so you can rotate it easily without it moving out of the ceiling tile.