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ACCA Manual D: Residential Duct Systems, 2016 Edition

Product Code/ISBN: 9781892765437

Design a residential duct system in less time with the streamlined Manual D duct procedure! You can apply the Manual D procedure to constant volume systems and zoned variable air volume systems, over a full range of duct construction materials.

The updated Manual D has been significantly revised to include:

  • Updated and expanded VAV guidance, with detailed examples
  • Impacts of excess length, sag and compression in flexible ducts
  • New equivalent length values for flex duct junction boxes

Manual D provides:

  • A single set of ANSI-recognized duct sizing principles and calculations that apply to all duct materials
  • System operating point (supply Cfm and external static pressure), and airway sizing for single-speed and multi-speed (ECM) blowers
  • A method for determining the impact of duct friction and fitting pressure drop on blower performance and air delivery
  • The most comprehensive equivalent length data ever published

Manual D includes a number of informative appendices related to air distribution systems, including:

  • Equipment and air-side components
  • Controlling excess air when VAV dampers close
  • Duct loads, duct leakage and duct system efficiency
  • Air quality issues, noise control, and minimum air velocity for ducts
  • Codes, standards, and best practice issues
  • Commissioning issues
  • And more!