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� SECTION 15200 <br /> INSULATION <br /> � <br /> 1.00 GENERAL <br /> � A. Insulation shall be applied to clean dry piping and ductwork. <br /> � B. Materials <br /> 1. All insulation shall have composite (insulation,jacket, and/or facing and adhesive <br /> used to adhere the facing or jacket to the insulation), fire and smoke hazard <br /> ratings as tested by Procedure ASTM E-84, NFPA 225 and U/LI 723 not <br /> � exceeding Flame Spread 25 and Smoke Developed 50. <br /> 2. Jacket and Facing Descriptions <br /> a. All purpose vapor barrier jackets. <br /> � b. VB vapor barrier, white kraft bonded to 1 mil aluminum foil, reinforced <br /> with glass yarn. Water vapor permeability 0.02 perms. <br /> c. FSK reinforced foil and paper (Foil Scrim Kraft). Aluminum foil <br /> (minimum 0.75 mil thick) reinforced with fiber glass yard mesh and <br /> � laminated to 40 lbs. chemically treated fire resistant Kraft UL rated. <br /> C. Ductwork <br /> � 1. External rigid board insulation shall be equal to Owens Corning 703 Series with <br /> FRK (ASJ) vapor barrier facing, 1 1/2 Ib. density fiberglass complete with non- <br /> combustible foil faced vapor barrier. Entire system shall be UL listed. External <br /> � wrap insulation shall be 1 lb. densiry. <br /> 2. Provide continuous vapor barrier over all seams. <br /> 3. The following are the insulation types and thicknesses: <br /> a. The outside air ductwork to FU-1 and the intake plenum shall be insulated <br /> � with 1" foil faced rigid board fiberglass insulation (this includes the mixing <br /> box and/or sections of mixed air duct). <br /> b. All exhaust ducts shall be insulated from the relief hood, PRV or wall <br /> � penetration to a point 5' within the building with 1" wrapped insulation on <br /> round ducts and 1" rigid board insulation on all other ducts. <br /> c. All FLT ductwork shall be insulated with 1" foil faced rigid board or wrap <br /> � fiberglass insulation for ducts less than 1 square foot, larger than 1 square <br /> foot shall be insulated with 1 1/2". <br /> D. Kitchen Exhaust Ductwork <br /> � 1. Provide UL classified, 2 hour rated duct wrap enclosure equal to 3M <br /> "Firemaster". The system shall be rated for 2300°F, and be a refractory ceramic <br /> fiber blanket. Apply a two layer, wrap installation in accordance with the <br /> � manufacturers recommendations. Final installed thickness shall be 3". <br /> E. Above Ground Piping <br /> 1. Piping shall be insulated with Manville (Owens-Corning, Knau� "FL,AME <br /> � SAFE" fiber glass insulation, or approved equal. The insulation shall have an <br /> average thermal conductivity not exceeding 0.22 BTU in. per sq. ft. per °F. hour <br /> at mean temperature of 75° F. <br /> � 2. Exposed areas shall be furnished with factory applied "FL.AME SAFE" <br /> All-Purpose Vapor barrier jacket. <br /> 3. Concealed areas with factory applied "FLAME SAFE" VB (Vapor Barrier Jacket <br /> � or All-Purpose Jacket). <br /> 4. Fittings, valve bodies and flanges for pipe size 4" and smaller shall be provided <br /> with PVC jackets over fiberglass inserts. <br /> � 032597 CBA701 8/1/97 <br /> 15200-1 <br /> , <br />