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SHEET NO.SCALE:DWG.#:DRAWNDATE: BY:REVISIONSwww.captiveaire.com MASTER DRAWINGCentral CA 8 Adrian Court, Burlingame, CA, 94010 PHONE: (415) 956-2200 FAX: (919) 227-5940 EMAIL: reg91@captiveaire.com Double Wall Grease Duct SpecificationFurnish double wall, factory built grease duct for use with Type I kitchen hoods, which conforms to the requirements of NFPA-96. Products shall be ETLlisted to UL-1978 and UL-2221 for venting air and grease vapors from commercial cooking operation. Models DW-2R, 3R and 3Z are used for greaseduct applications when installed in accordance with these instructions and National Fire Protection Association "NFPA 96"; Standard for VentilationControl and Fire Protection of Commercial Cooking Operations. Double wall grease ducts are listed for a continuous internal temperature of 500 degreesF and intermittent temperatures of 2000 degrees F.The duct sections shall be constructed of an inner duct wall and an outer wall with insulation in between. The inner duct wall shall be constructed of .036inch thick, 430 type stainless steel and be available in diameters 8" through 24". The outer wall shall be constructed of stainless steel at a minimum of.024 inch thickness. The duct, based on model number, shall include layers of Super Wool 607 Plus insulation between the inner and outer wall. Greaseduct joints shall be held together by means of formed V clamps and sealed with 3M Fire Barrier 2000+. The duct wall assembly shall be tested and listedat ¾" or zero inch clearance, according to classifications.Classifications and ClearancesUL 2221: Standard for Fire Resistive Grease Duct Enclosure Assemblies. Chapter 7 of this standard references a test labeled Internal Fire Test. Section7.1.1 references two installation conditions, Condition A and Condition B. Condition A represents all installation condition except for installation withinnon-ventilated combustible enclosures. Condition B represents installation within a non-ventilated combustible enclosure.Model DW-3Z is classified under UL2221 (Test of Fire Resistive Duct Enclosure Assemblies) as an alternate to 2-Hr. fire resistive shaft enclosures with aminimum zero clearance to combustibles (sizes 8" to 24" diameter). Model 3Z is listed in accordance with the requirements for duct enclosure ConditionA and B.Model DW-3R is classified under UL2221 (Test of Fire Resistive Duct Enclosure Assemblies) as an alternate to 2-Hr. fire resistive shaft enclosures with areduced clearance to combustibles (sizes 8" to 24" diameter). Model 3R is listed in accordance with the requirements for duct enclosure Condition B.Model DW-2R is classified under UL2221 (Test of Fire Resistive Duct Enclosure Assemblies) as an alternate to 2-Hr. fire resistive shaft enclosures with areduced clearance to combustibles (sizes 8" to 16" diameter). Model 2R is listed in accordance with the requirements for duct enclosure Condition B.A11/21/19AAPC Comments--------------------------------A. AmadioHT11/25/2019AS NOTED22471REVISIONSNo.RemarksDRAWN:CHECKED:DATE:SCALE:JOB NO:DateSTAMP:SHEET TITLEToll Free: 800-498-4110 Ceres, CA 209-538-2879 LIVING & ENERGY CALIFORNIA A Division of William Lilly & Associates, Inc. Title 24 Compliance - Residential/Non Residential CONSERVATION FOR THE CALIFORNIA LIFESTYLE Fax: 209-538-2885 www.califliving.comDrnSHEETREVISIONSNo.RemarksDRAWN:CHECKED:DATE:SCALE:JOB NO:DateSTAMP:SHEET TITLEToll Free: 800-498-4110 Ceres, CA 209-538-2879 LIVING & ENERGY CALIFORNIA A Division of William Lilly & Associates, Inc. Title 24 Compliance - Residential/Non Residential CONSERVATION FOR THE CALIFORNIA LIFESTYLE Fax: 209-538-2885 www.califliving.comDrnSHEETFausto & Lynn Echeverria (415) 404-5194 Ruby Bakery & Cafe 11 S. Church St, Lodi CA 95240M-0.5KITCHEN HOODDETAILS & DATA4 of 4A