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OC Sportsplex Pool HVAC Unit Replacement <br />PDC Project 23022 Air Duct Accessories 23 33 00 - 2 <br />B.Multi-blade device with blades aligned in short dimension;steel construction;with individually <br />adjustable blades,mounting straps. <br />2.02 DUCT AIR TURNING VANES <br />A.Provide factory manufactured turning vanes in each elbow where inside radius is less than the <br />width of the duct,and in all square or rectangular elbows. <br />B.Turning vane assemblies shall be adequately supported and affixed to prevent rattling,breakaway, <br />and shall not deform.Assemblies longer than 12 inches shall be double wall. <br />C.Turning vanes in negative pressure ductwork with pressure rating above 2 inches shall be installed <br />in accordance with SMACNA Industrial Duct Construction Standard. <br />D.Turning vanes shall match the duct material construction. <br />E.Rectangular Throat Elbow Truning Vanes (Vane Runner Length up to 18"and Vane Length up to <br />36") <br />1.Provide single blade type vanes having 2"radius and 1-1/2"spacing,24 gauge minimum. <br /> Construct vanes in accordance with SMACNA HVAC Duct Construction Standards. <br />2.If duct size changes in mitered elbow,use single blade type vanes with trailing edge <br />extension. <br />F.Rectangular Throat Elbow Truning Vanes (Vane Runner Length up to 18"and Vane Length up to <br />36"): <br />1.Use double wall airfoil type with smoothly-rounded entry nose and extended trailing edge on <br />2.4"center spacing. <br />2.Vanes shall be equal to HEP (High Efficiency Profile)vanes as manufactured by Aero/Dyne <br />Co. <br />G.Radius Elbow Splitter Vanes: <br />1.Splitter vanes for radius elbows shall be extended entire length of fitting and constructed in <br />accordance with SMACNA HVAC Duct Construction Standards. <br />H.Manufacturers: <br />1.Aero Dyne <br />2.Ductmate,Inc. <br />3.Sheet Metal Connectors,Inc. <br />4.Duro-Dyne <br />5.DynAir Inc. <br />6.Or Approved Equal <br />2.03 WIRE MESH SCREENS <br />A.Screen assemblies shall be removable. <br />B.Mesh:1/2 inch square pattern,1/16 inch galvanized wire,interwoven,welded at wire intersections <br />and to the frame to prevent rattles. <br />C.Frames:Minimum of 1 inch by 1 inch by 1/8 inch galvanized steel angles for duct sizes through 24 <br />inches,1-1/2 inch by 1-1/2 inch by 3/16 inch for duct sizes between 25 inches and 48 inches,and <br />2 inches by 2 inches for ducts larger than 48 inches continuous around perimeter of screen. <br />Provide intermediate supports to limit screen deflection to 1/16 inch at maximum design airflow. <br />2.04 DUCT ACCESS DOORS <br />A.Manufacturers: <br />1.Acudor Products Inc,a Division of Nelson Industrial Inc​​ <br />2.Ductmate Industries,Inc,a DMI Company​​ <br />3.Durodyne <br />4.Elgen Manufacturing​​ <br />5.MKT Metal Manufacturing​​ <br />6.Nailor Industries Inc​​ <br />7.Ruskin Company​​ <br />8.SEMCO LLC​​ <br />Docusign Envelope ID: D4F3B98E-0756-4A0C-A3AD-05AA32D39F1C