ACCA -- Residential Duct Systems - Manual D
Design a residential duct system in less time with the streamlined Manual D duct procedure. The newly released 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 materialsSystem operating point (supply Cfm and external static pressure), and airway sizing for single-speed and multi-speed (ECM) blowersA method for determining the impact of duct friction and fitting pressure drop on blower performance and air deliveryThe Manual D procedure can be applied to constant volume systems and zoned variable air volume systems, over a full range of duct construction materials. Manual D includes a number of informative appendices related to air distribution systems (e.g., 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, minimum air velocity for ducts; codes, standards and best practice issues; and commissioning issues). Citation: Non-ASHRAE Book
Product Code(s): 96780
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