Fibrous Glass Duct Construction Standards, Low Velocity Systems 2


Vendor: NAIMA

Product type: Book

Includes comprehensive data on how to fabricate and install fibrous glass duct systems. This illustrated handbook depicts methods of constructing straight duct sections plus tees, elbows and complex fittings, connecting ducts to HVAC equipment also outlines UL 181A systems, reinforcement, support, and damage repair. Rectangular ducts covered by this standard are designed to operate at 2" w.g. (500 Pa) static pressure or less and 2'400 feet per minute (12 m/sec) internal air velocity or less. Fibrous glass ducts were designed for use in heating and cooling systems operating at internal air temperatures not less than 40 degrees and not greater than 250 degrees F. Underwriters Laboratories Inc. Standard for Closure Systems for Use with Rigid Air Ducts and Air Connectors UL 181A incorporates key provisions of the UL 181 Standard, as well as provisions developed by NAIMA and various closure material manufacturers. The resultant standard provides the means for assuring the contractor and building owner that the selected closure system will perform within varied environmental conditions. NAIMA acknowledges SMACNA's Fibrous Glass Duct Construction Standards, Fifth Edition, 1979, as a basis for the scope and content of the present document. This standard was developed using reliable engineering principles and research, plus consultation with and information obtained form manufacturers, contractors, testing laboratories and others having specialized experience. They are subject to revision as further experience and investigation may show is necessary or desirable. Construction and products which comply with this standard will not necessarily be acceptable, if when examined and tested, they are found to have other features which impair the result contemplated by these requirements. Dimensional data on 2" (51mm) thick fibrous glass duct board, with an R-value of 8.7 (RSI of 1.53) were included as well as thermal.

Publisher: NAIMA; 5th edition (2002)
Package Dimensions: 8.4 x 5.8 x 0.7 inches
Shipping Weight: 12.6 ounces

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