Part 3 of 3 

This full day webinar reviews the basic principles involved in designing residential duct work. The Wrightsoft floor plan developed on day one in Wrightsoft is used in this duct design session. The set-up of Wrightsoft to match best practices is covered and a portion of the presentation is a practical session demonstrating the process of selecting registers. A sample register schedule is reviewed and explained. The session begins with a brief review of the elements discussed on the previous two days. As the session progresses the equipment that was selected on day one is input into the Wrightsoft program. Design external static pressure is input, as well as the pressure drops from registers, grilles, balancing dampers and filters. The effect of filters on airflow and static pressure is discussed and the importance of designing larger returns and deeper filter boxes is explained and illustrated. The attendee inputs their practice sketch into Wrightsoft and one of the student’s design is reviewed along with the friction rates and duct sizes. As the day progresses more advanced issues are covered such as entering second floors, vaulted ceilings, cantilever floors are included in the Wrightsoft exercise. Attendees are encouraged to have their downloaded handouts ready and available from previous sessions to review the various charts and tables required in the design process.

Agenda:

• Wrightsoft setup for duct design
• Airflow and static pressure considerations
• Register selection and scheduling
• Hands-on practice: design input
• Design review and optimization
• Advanced design scenarios

The objective of this course is that at the conclusion, participants will be able to:  

• Configure Wrightsoft software for accurate residential duct design following industry best practices
• Input equipment, airflow requirements, and system pressure components into Wrightsoft to model duct system performance
• Evaluate the impact of filters, grilles, registers, and dampers on static pressure and airflow
• Design and optimize return air systems, including proper sizing and filter box configuration for improved efficiency
• Apply register selection principles and develop a register schedule based on airflow and comfort requirements
• Input and analyze duct design layouts in Wrightsoft, including validation of friction rates and duct sizing
• Design for advanced residential scenarios such as multi-story homes, vaulted ceilings, and cantilevered floors while maintaining comfort and code compliance

Continuing Education Credits:

CABEC: 6, NATE: 6