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DocuSign Envelope ID: 9826C043- 4C32- 49CD- A4CC- DC28ABAB7CE7 <br />SECTION 238100 - HVAC INSULATION <br />B. Semi -Rigid Fiberglass: Apply insulation to equipment shells using weld pins, bonding adhesive, <br />banded and wired in place. Fill all joints, seams and depressions with insulating cement to a smooth, <br />even surface. Cover with reinforcing fabric and 2 coats of mastic. Use vapor barrier mastic on <br />systems requiring a vapor barrier. <br />C. Elastomeric /Polyolefin: Apply full cover coat of adhesive to surface to be insulated, insulation and <br />edge butt joints. Place insulation with edge joints firmly butted pressing to surface for full adhesion. <br />Seal seams and joints vapor tight. <br />D. Equipment Insulation Schedule: Provide equipment insulation as follows: <br />Equipment Insulation Thickness <br />Type <br />Air Handling Unit Casings or attached Rigid Fiberglass 2" <br />component sections not factory insulated <br />Condenser shell only needs to be insulated when condenser is city, lake, or river water cooled or when <br />"free cooling" is used. <br />E. Insulate air handling unit casings, chambers, or plenums (filters, mixing chambers, sound <br />attenuators, etc.) in accordance with requirements of adjacent duct insulation. <br />END OF SECTION 238100 <br />Reece, Noland & McElrath, Inc. 238100-5 Orange County Board of Elections <br />Orange Co., NC 05/04/18 <br />