About This Book
An ACCA Ductulator (officially known as the ACCA Duct Calculation Slide Rule) is a circular slide-rule tool used by heating and cooling technicians to properly size air ducts. Based on ACCA Manual D standards, it allows users to match airflow, friction, and velocity in order to determine the correct round or rectangular duct dimensions.
Core Uses
- Size Different Materials: Compatible with sheet metal, lined metal, duct board, and flexible ducts.
- Convert Shapes: Translates round duct measurements into equivalent rectangular duct sizes.
- Calculate Airflow: Establishes the relationship between cubic feet per minute (CFM), air velocity, and friction rate.
- Adjust for Conditions: Accounts for variations in temperature and altitude.
Practice Tests Using This Book
This book is required or recommended for 3 licensing exams. Our practice tests include questions based on this material.