Laserfiche WebLink
PMG-1043 1 Most Widely Accepted and Trusted Page 2 of 2 <br /> The DSTTm system is a proprietary coating spray-applied to the interior of sound, existing, <br /> underground noncombustible (concrete or metal) ductwork in accordance with the manufacturer's <br /> proprietary process by installers trained and certified by the manufacturer. When tested according to <br /> ASTM E 84 at a 0.025-inch thickness (0.635 mm), the material demonstrated a maximum flame <br /> spread index of 45 and a maximum smoke developed index of 35. Laboratory analysis provided <br /> indicated Envirolinerlm has the same or lower ASTM E 84 characteristics as materials allowed for <br /> underground ducts in IRC M1601.1.2 and IMC Section 603.8, and as an alternate under UMC Section <br /> 105. The existing underground ductwork must have been installed in accordance with the applicable <br /> code, and be in sound condition. <br /> Conditions of Listing: <br /> 1. Designs using EnvirolinerTm must be limited to underground air duct systems with a maximum air <br /> temperature of 150°F (66`C) at the discharge of the unit entering the duct system. Duct sizing <br /> must be in accordance with the applicable code. <br /> 2. EnvirolinerTm coatings must be installed on ducts which are either underground or embedded <br /> within concrete slabs. The duct must not be used in exposed or aboveground applications. <br /> 3. The existing uncoated air duct system must have been sized and installed in accordance with the <br /> applicable code. <br /> 4. The DSTTm EnvirolinerTm is manufactured under a quality control program with annual <br /> surveillance inspections by ICC-ES. <br />