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KAISER PERMANENTE Site Prep #1 Electrical Service <br />ASC & Clinic (HUB) March 18, 2020 <br />Everett, WA Project No. 19.05002.00 <br />3. Blade Axles: Galvanized steel. <br />4. Tie Bars and Brackets: Galvanized steel. <br />C. Jackshaft: 1-inch diameter, galvanized steel pipe rotating within a pipe -bearing assembly <br />mounted on supports at each mullion and at each end of multiple -damper assemblies. <br />Length and Number of Mountings: Appropriate to connect linkage of each <br />damper of a multiple -damper assembly. <br />D. Damper Regulators: Zinc -plated, die-cast core with dial and handle made of 3/32-inch- <br />thick zinc -plated steel, and a 3/4-inch hexagon locking nut. Include center hole to suit <br />damper operating -rod size. Include elevated platform for insulated duct mounting. <br />2.3 REMOTE CONTROL VOLUME DAMPERS <br />A. General: The remote control system shall provide means of balancing airflow in ductwork <br />above inaccessible ceilings. <br />B. Manufacturers: Subject to compliance with requirements, provide products by one of the <br />following: <br />1. United Enertech <br />2. Greenheck <br />C. Description: Multiple- or single -blade unit with sleeve, suitable for horizontal or vertical <br />applications, standard leakage rating, zinc -plated steel axle with linkage outside <br />airstream, DC voltage drive actuator, with adjustments accomplished by a hand-held <br />battery power pack, <br />D. Ratings: Volume damper unit with ratings as follows: <br />1. Pressure: 1 in. wg pressure differential <br />2. Velocity: 2000 fpm <br />3. Temperature: 180 deg F <br />E. Rectangular Units: Multiple- or single -blade unit with side plate frame and the following <br />features: <br />1. Frame: 0.081 inches extruded aluminum, 4-1/2 inches deep. <br />2. Blade: 0.125 inches extruded aluminum multiple opposed blades with blade <br />seals; exception: formed aluminum single blade through 12 inch height. <br />3. Bearings; bronze Oilite <br />4. Axles: '/2-inch diameter zinc plated steel with thrust bearing <br />5. Side Plate: 6-1/4-inch x (height + 1-inch) x 18 gauge galvanized steel thickness <br />F. Remote Operated Damper Regulators: DC low voltage operated drive actuator with <br />platform suitable for insulated duct mounting, plenum -rated electric cable, cable <br />connectors, female receptacle single or multi -port remote wall or ceiling plate, color white <br />or coordinated with Architect, hand held battery power pack to control actuator. <br />2.4 FIRE DAMPERS <br />A. Manufacturers: Subject to compliance with requirements, provide products by one of the <br />following: <br />Fire Dampers: <br />a. Ruskin. <br />b. Air Balancing, Inc. <br />C. Greenheck. <br />AIR DUCT ACCESSORIES 23 33 00 - 3 <br />