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DA04 Air System Balancing – in HVAC

Published: 2021 | Pages: 100

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DA04 is a manual on the testing, adjusting and balancing (TAB) of air distribution systems in heating, ventilation, air conditioning and refrigeration (HVAC&R) applications. The accurate measurement and adjustment of airflow rates using a recognised and reliable process during commissioning ensures that plant and equipment are adjusted and set correctly to meet the specified design operating conditions. For air conditioning systems, TAB activities ensure that operational variables are adjusted and set correctly to create the design comfort conditions, including volume, temperature, humidity, pressure, air movement and air quality set points or targets within the occupied space.

DA04 sections

1. Scope and introduction
2. Commissioning and TAB – an overview
3. Fundamentals of airflow in ducts
4. Measuring airflow
5. Preparing and programming for TAB
6. Air balancing procedures
7. Components and TAB
8. The systems approach
9. Recording and reporting
10. Appendices.