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Southern Human Services Center Smith Sinnett /2020072 <br />HVAC and Roof Renovations Orange County,North Carolina <br />Duct Insulation 23 07 13 - 4 <br />C.Elastomeric Foam Adhesive: Air dried,contact adhesive,compatible with insulation. Comply with <br />ASTM C916. <br />D.Polyester Inuslation: <br />1.Minimum Service Temperature: ​Minus 40 degrees F​. <br />2.Maximum Service Temperature: ​220 degrees F​. <br />3.Fungal Resistance: No growth when tested according to ASTM G21. <br />4.Bacteria Resistance:No growth when tested according to ASTM G22. <br />5.Apparent Thermal Conductivity: Maximum of ​0.28 at 75 degrees F​. <br />6.Minimum Noise Reduction Coefficients: <br />a.1 inch Thickness:0.6 <br />b.1.5 inch Thickness:0.7 <br />7.Erosion Resistance: Does not show evidence of breaking away,flaking off,or delamination <br />at velocities of 10,000 fpm per ASTM C1071. <br />E.Adhesive: Waterproof,fire-retardant type,ASTM C916. <br />1.Manufacturers: <br />a.Design Polymerics;DP 2502 Water Based,Low VOC,Duct Liner Adhesive <br />b.ITW Ultratack <br />c.RCD #5 Ductliner Adhesive <br />F.Liner Fasteners: Galvanized steel,self-adhesive pad with integral head. <br />PART 3 EXECUTION <br />3.01 EXAMINATION <br />A.Test ductwork for design pressure prior to applying insulation materials. <br />B.Verify that surfaces are clean,foreign material removed,and dry. <br />3.02 INSTALLATION <br />A.Install in accordance with manufacturer's instructions. <br />B.Insulate all supply diffusers and ducted return grilles with 2"R6 Duct Wrap.Cut diffusers so there <br />is a folder 2"lap on all four sides.Take with FSK tape where insulated flex meets duct insulation <br />so there are no raw edges of fiberglass. <br />C.Use of duct liner shall be limited to transfer ducts only. <br />D.Install multiple layers of insulation with longitudinal and end seams staggered. <br />E.Install insulation with least number of joints practical. <br />F.The duct liner ends of all transfer ducts shall receive a channel nosing -1"x liner thickeness x 1", <br />mechanically secured to the sheet metal duct in accordance with NAIMA fabrication standards. <br />G.Insulated Ducts Conveying Air Below Ambient Temperature: <br />1.Insulation on all pipes or ducts conveying air or liquids below the ambient temperature is <br />required to have a continuous vapor barrier.On all insulation with a vapor barrier,seal the <br />joints,duct wrap seams,vapor retarder (ASJ)film seams and penetrations in insulation at <br />hangers,supports,anchors,and other projections with a vapor-barrier coating/mastic as <br />specified in the individual insulation sections. <br />2.For insulation application where vapor barriers are indicated,extend insulation on anchor legs <br />from point of attachment to supported item to point of attachment to structure.Taper and seal <br />ends at attachment to structure with vapor-barrier coating/mastic. <br />3.Install insert materials and install insulation to tightly join the insert.Seal insulation to <br />insulation inserts with adhesive or sealing compound recommended by insulation material <br />manufacturer. <br />4.Cover inserts with jacket material matching adjacent pipe insulation.Install shields over <br />jacket,arranged to protect jacket from tear or puncture by hanger,support,and shield. <br />5.Continue insulation through walls,sleeves,hangers,and other duct penetrations. <br />H.Ducts Exposed in Mechanical Equipment Rooms or Finished Spaces[<>]: Provide white PVC <br />jacketing. <br />DocuSign Envelope ID: 94E7997D-4F29-42F6-A9B4-0A160438D2A6