A handy compilation of the essentials, this new edition includes information from ACCA Manuals B, C and G, and pertinent technical bulletins. It also features a streamlined version of the duct sizing procedure.

Manual D, published by the Air Conditioning Contractors of America (ACCA) is a comprehensive guide for designing residential air distribution systems. The manual presents the methods and procedures that should be used to design residential duct systems. It includes information on system selection, system performance characteristics, duct materials, blower performance, air-side devices and duct sizing procedures. It also includes information about duct system efficiency and the synergistic interactions between the duct system, the envelope, the HVAC equipment, the vents and the household appliances.

Design a residential duct system in less time with the streamlined duct sizing procedure in this revised edition of Manual D. You can apply this procedure to constant volume systems and zoned, variable air volume systems, over the full range of duct construction materials. Manual D also includes the most comprehensive equivalent length data ever published.

• Residential duct systems types, applications, and selection
• Residential air-side equipment
• Basic principles of multi-speed and variable speed blowers, pressure loss, operating point, and duct sizing calculations
• Examples of duct sizing calculations—constant volume systems, flexible duct, junction box systems, multiple zone VAV systems, two story VAV systems, and system retrofits with VAV dampers
• How duct leakage affects indoor air quality and the combined performance of the envelope equipment system
• Duct losses—conductive losses and leakage losses and how duct leakage affects indoor air quality and the combined performance of the envelope equipment system
• Noise control