REVIT HVAC BEST PRACTICES

REVIT SYSTEMS

Systems are the logical connection between elements in the model. They are the link between the air terminal, the variable air volume (VAV) box, and the air handler, and they represent an additional layer of information above the physical connections made with duct and pipe. Without systems, ducts and pipes act only as connections between two points. Systems are needed to generate the bigger picture and allow you to manage the elements on a building-wide level.

Duct Systems:

You can create systems to represent supply, return, and exhaust air as well as plumbing, fire-protection, and hydronic piping. You can also create systems to represent other uses of duct and pipe outside the predefined types included in Revit MEP

• General Exhaust Air Duct System
• Smoke Exhaust Air Duct System
• Kitchen Exhaust Air Duct System
• Toilet Exhaust Air Duct System
• Fresh Air Duct System
• Smoke Makeup Air Duct System
• Stair Well Pressurization Air Duct System
• Lift Well Pressurization Air Duct System
• Supply Air Duct System
• Return Air Duct System

Duct System Filters:

The best example of this is using a duct tag that includes not only the size but also the system abbreviation. Tagging any piece of pipe connected to the system, in any view, immediately generates a complete and accurate annotation.

Duct System Layout

Systems aid in the documentation of a model. Because elements across the entire model are linked together, tags and other properties can be managed quickly and accurately.

Pipe System Layout

 

There are several things to consider when setting up the components of a pipe system. You will need to define pipe types, load some fitting families, the image below is showing Automated pipe size and flow.