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Duct Fire Protection Products 23 07 00/THE Duct Fire Protection Products BuyLine 8880 Thermal Ceramics, a global manufacturer of high temperature insulation prod- ucts, has provided engineered solutions for heat containment problems for over 75 years, and was the first to develop flexible fire resistive duct enclosures, mar- keted under the brandname of FireMaster®, for commercial kitchen grease and air ventilation ducts. Unlike imitation wraps in today’s market, Thermal Ceramics has the widest range of duct enclosure products that are performance-tested beyond minimum laboratory listings or code requirements. This assures fire con- tainment, from the typical to the most complex duct designs, without theorizing. Thermal Ceramics innovative duct products are high temperature (2000°F) fire rated solutions that do not age, become brittle, or shrink during in-service opera- tions, like lower temperature mineral wool wraps. The duct products in the FireMaster line are resistant to mold growth in test conditions of 75-95% relative humidity (ASTM D6329). With zero flame and smoke ratings on the blanket, and only a 5 flame spread and 10 smoke rating on the foil encapsulation, Thermal Ceramics duct products do not add toxic emissions to fire conditions. With a vast number of field installations worldwide and over 20 years of successful fire con- tainment in real-world fires, the duct products in the FireMaster line have proven their worth. Typical Applications • Commercial Kitchen Grease Ducts • Air Ventilation Ducts • Chemical Exhaust Ducts • Stair Pressurization Ducts • Hazardous Exhaust Ducts • Trash and linen chutes Duct Fire Protection Products 2000°F Rigid Flexible External 2 Hr Internal 2000°F Commercial Kitchen Shaft Alternative Installation ASTM E119 & Grease Duct Fire Grease Duct Method E814 Performance Containment Air Ventilation Duct Systems Installation Experience Complies with • Wynn Hotel, Las Vegas, NV - Grease duct • Baylor University Bio-Science College, Waco, Texas - Chemical exhaust duct • M.D. Anderson Hospital, Houston, Texas - Grease duct • Bellagio Hotel, Las Vegas, NV - Grease ducts • Nationals Park, Washington, D.C. - Grease and air ducts • McDonalds Restaraunts, Nationwide - Grease ducts • Herman Memorial Hospital, Houston, TX - Electrical cable tray • Palazzo Hotel, Las Vegas, NV - Grease duct Member • Allure, Las Vegas, NV - Grease duct • University of California, Irvine - HVAC ducts • Valero Refinery, Benecia, CA - Electric cable tray Duct Fire Protection Products FastWrap® XL • Special fiberization technology for stronger fiber and better fire resistance • Low biopersistence fiber blanket, capable of withstanding 2000°F continuous temperatures • Flexible, 1-1/2” thick, 6 pcf • Non-combustible • Double layer tested to ASTM E2336 for zero clearance, 1 and 2 hour shaft alternative for grease ducts • Single layer tested to UL 1978 for zero clearance, 1 and 2 hour shaft alternative for grease ducts • Single layer tested to ISO 6944 for 1 and 2 hour shaft alternative for air ducts • UL listed systems • Building code report ESR 2213 per ICC-ES • Fully encapsulated for easy handling and installation • Meets the requirements of the NFPA 96, 2003 and 2006 International Mechanical Code, and 2006 UMC • Available in space saving 50 and 100 SF cartons • Available in 48” wide widths for faster and more economical installation PlenumWrap®+ • Low biopersistence fiber blanket, capable of withstanding 2000°F continuous temperatures • Flexible, 1/2” thick, 8 pcf • Non-combustible • Single layer tested to NFPA 262 (UL 910) • UL and OPL listed systems to reduce flame spread and smoke development of PVC, CPVC, PB, PE, PP, PV, PVDF, and ABS pipes and coated electrical cables in return air plenums • Fully encapsulated for easy handling and installation 23 07 00/THE BuyLine 8880 Building Code Compliance - 2006 IMC Change 506.3.10 Grease duct enclosure. A grease duct serving a Type I hood that penetrates a ceiling, wall or floor shall be enclosed from the point of penetration to the outlet terminal. A duct shall penetrate exterior walls only at locations where unprotected openings are per- mitted by the International Building Code. Ducts shall be enclosed in accordance with the International Building Code requirements for shaft construction. The duct enclosure shall be sealed around the duct at the point of penetration and vented to the outside of the building thorough the use of weather-protected openings. Clearance from the duct to the interior sur- face of enclosures of combustible construction shall be not less than 18 inches (457 mm). Clearance from the duct to the interior surface of enclosures of noncombustible construc- tion or gypsum wall board attached to noncombustible structures shall be not less than 6 inches (152 mm). The duct enclosure shall serve a single grease exhaust duct system and shall not contain any other ducts, piping, wiring or systems. Exceptions: 1. The shaft enclosure provisions of this section shall not be required where a duct penetration is protected with a through-penetration firestop system classified in accordance with ASTM E 814 and having an "F" and "T" rating equal to the fire-resistance rating of the assembly being penetrated and where the surface of the duct is continuously covered on all sides from the point at which the duct penetrates a ceiling, a wall or floor to the outlet terminal with a classified and labeled material, system, method of construction or product specifically evaluated for such purpose, in accordance with ASTM E 2336. Exposed duct wrap systems shall be protected where subject to physical damage. Excerpt taken from 2006 International Mechanical Code. A Fire Story Red Star Tavern and Road House, Portland, Oregon A grease duct fire at the Red Star Tavern and Road House, demonstrated the relative performance of a gyp- sum shaft enclosure and FireMaster Duct Wrap insulation methods on the same grease duct exhaust system. The FireMaster Duct Wrap effectively prevented the fire, and there was no escape of flame or fumes. However, the gypsum shaft enclosure failed, and spawned multiple fires causing $150,000 in damage. Instead of protecting the structure, the gypsum enclosure with its air gap actu- ally promoted the rapid spread of flames. When the build- Red Star Tavern and Road Burned gypsum shaft ing was rehabilitated, Portland building officials required House that the entire duct be protected with foil encapsulated FireMaster Duct Wrap. McGuffey's, Branson, Missouri FireMaster Duct System also successfully contained a grease duct fire at McGuffey’s when the automatic fire suppression system failed to respond to the heat of the fire at stove level. “The grease duct insulation did a good job of holding the fire in check until the suppression system could be manually acti- vated. This incident demonstrated the value of using both active and passive fire protection components to protect com- mercial buildings.” Fire Chief Ernest Braswell, Branson, Missouri McGuffey’s Structural integrity of duct was maintained. Testimonials “Having been involved in the building trades for over 30 years, both as a sheet metal worker and as a building code inspector, I have found the FireMaster grease duct and air duct wrap to be a versatile and effective alter- native to gyp board shaft enclosures." Phil Burkart, Structural/Mechanical Inspections Supervisor, City of Portland, OR "The biggest advantage in FireMaster duct systems, in addition to the product's flexibility and lightweight nature, is time savings on installation. With FireMaster Duct Systems, the general contractor and owner can save a minimum 1 - 2 weeks when compared to drywall shafts even on jobs above ceiling grid lines." Tommy Thoreson, Manager, Fire Stop Contracting, Superl, Inc., Fridley, MN FireMaster Duct System versus Mineral Wool Based Duct Wraps Due to high shrinkage at even moderate temperatures (see graph at right) miner- al wool based duct wraps have lower temperature capabilities when compared Mineral Wool and FireMaster encapsulated duct to 2000°F insulation materials such as systems before firing FireMaster. High temperature expsures, such as hidden intermittent grease duct Mineral Wool and fires may change mineral wool based FireMaster after duct wrap from its originally installed, Mineral Wool firing (equivalent flexible physical property to a fragile length and thick- hardened, and brittle enclosure. When ness before firing) this happens, flexural strength is lost leaving the mineral wool enclosure vul- nerable to cracking during thermal expansion of the duct under normal cooking operations or fire conditions. An open- ing in the enclosure such as this could create a compromised FireMaster fire barrier for fire to escape, negating the 2-hour rating. FireMaster Duct Systems versus Drywall Board Shaft Enclosures Even when built according to code, there are concerns for the performance of a drywall board enclosure under grease duct fire conditions. The concept of a two-hour rating for a drywall shaft enclosure is based on standard building conditions which does not take into account the unique fire behaviors that occur within grease and air ventilation ducts. FireMaster Commercial Kitchen Grease and Air Ventilation Drywall Board Enclosure Duct Systems • 2000°F fire rated • Not recommended for exposures > 125°F • Passive protection remains reliable; does not age, shrink or • Grease ducts could operate at temperatures over drywall's tem- become brittle over time or during high temperature exposures perature limit causing premature dehydration
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