Division 22 23 Ebook Page 138 QuietR® Rotary Duct Liner Product Data Sheet

Product Data Sheet QuietR Rotary Duct Liner Figure 1 Acoustic Performance Tested Values-QuietR Duct Liner Sound absorption coefficients at octave band center frequencies (Hz) Thickness in (mm) 125 250 500 1000 2000 4000 NRC (13) 0.04 0.12 0.39 0.64 0.78 0.74 0.50 1 (25) 0.05 0.30 0.60 0.87 0.98 1.05 0.70 1 (38) 0.05 0.47 0.85 1.01 0.85 2 (51) 0.12 0.66 1.04 1.08 1.04 1.07 0.95 These data were collected using a limited sample size and are not absolute values. Reasonable tolerances must therefore be applied. All tests were conducted in accordance with ASTM C423, Mounting A (material placed against a solid backing such as a block wall). For more information, call your Owens Corning Representative. Insertion Loss, dB per ft of Lined Duct 1" Liner 2" Liner Octave band center frequencies, Hz P/A, ft/ft 2 125 250 500 1000 2000 4000 8 0.6 1.5 2.7 5.8 7.4 4.3 0.8 2.9 4.9 7.2 7.4 4.3 6 0.5 1.2 2.3 5.0 5.8 3.6 0.6 2.3 4.2 6.2 5.8 3.6 4 0.4 0.8 1.9 4.0 4.1 2.8 0.5 1.6 3.5 5.0 4.1 2.8 2 0.2 0.5 1.4 2.8 2.2 1.8 0.3 0.8 2.3 3.3 2.0 1.7 1 0.1 0.1 1.0 2.0 1.2 1.2 0.2 0.5 1.8 2.3 1.1 1.1 Duct Liner Insertion Loss-Data extracted from ASHRAE Handbook, HVAC Applications, Chapter 43, 1999 P/A = duct perimeter, ft/duct cross sectional area (ft2). Example: 12" x 12", P/A = 4 (1/ft.). For more information, call your Owens Corning Representative. Installing two layers of material to meet a specific liner thickness is not recommended. If the specification forces the use of multiple layers, the following steps must be taken: 1. Adhere bottom layer of duct liner to duct in normal manner. 2. Adhere top layer to bottom layer of liner using a minimum of 90% adhesive coverage. 3. Treat all leading edges with metal nosings to prevent separation of the two layers. 4. Use mechanical fasteners of the proper length for double layer. Application Limitations Use of QuietR Rotary Duct Liner is not recommended for the following applications: With wood or coal fired equipment, or equipment of any type which does not include automatic maximum temperature controls and where operating temperatures of 250F (121C) may be exceeded. In kitchen or fume exhaust ducts, or ducts conveying solids or corrosive gases In any application where the duct liner may come in direct contact with liquid water (such as cooling coils, humidifiers, and evaporative coolers) unless protected from the water source.

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