Votes - 5, Average rating: 3.8
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manual abstract
High strength airfoil blades ensure the lowest resistance to airflow in HVAC systems with velocities to 2000 fpm (10.2 m/s ) and 4 wg (1 kPa). Model SMD-401M may be installed vertically (with blades running horizontal) or horizontally and is rated for airflow and leakage in either direction. RATINgS Leakage Class: I Model SMD-401M meets the requirements for smoke dampers established by: National Fire Protection Association NFPA Standards 92A, 92B, 101 & 105 IBC International Building Codes ICBO Uniform Building Codes New York City (MEA listing #260-91-M) CSFM California State Fire Marshal Leakage (Smoke) Damper Listing (#3230-0981:108) Operational Rating: Actual ratings are size dependent. Max. Velocity: up to 2000 fpm (10.2 m/s) Max. Pressure: 4 in. wg (1 kPa) Temperature: 250°F (121.C) with all actuators. STANDARD CONSTRUCTION Frame: 5 in. x 1 in. (127mm x 25mm) galvanized steel hat channel with reinforced corners. A low profile head and sill are used on sizes less than 17 in. (432mm) high to maximize free area and performance. Blades: Airfoil shape constructed of heavy gauge extruded aluminum. Structural reinforcement through the entire length. Seals: Extruded silicone rubber blade seals. Flexible stainless steel jamb seals. Linkage: Concealed in jamb. Axles: 1.2 in. (13mm) dia. plated steel. Bearings: Bronze sleeve type. SIzE LIMITATIONS: Minimum Size: 8 in. W x 8 in. H (203mm W x 203mm H) Maximum Size: Single Section: 36 in. W x 36 in.H (914mm W x 914mm H) Multi Section: 144 in. W x 36 in. H (3658mm W x 914mm H) Optional Features: • Galvanized steel sleeves. • Stainless steel bearings • OCI (Open closed indication switches) • Electric or pneumatic actuators to accomplish smoke management and system functions. • POC Retaining angles • Smoke detector • Momentary switch • Transitions (R, C, O) • Sealed transitions and sleeves “UL CLASSIFIED (see complete marking on product)” “UL CLASSIFIED to Canadian safety standards (see complete marking on product)” Standard 555S (Listing #R13317) H* W* LH RH *W&H dimensions furnished approximately 1/4 in. (6mm) undersize. (Add sleeve thickness for overall sleeved damper dimension) Right hand drive is shown. Left hand drive is available upon request. Installation instructions available at SMD-401M Pressure Drop Data This pressure drop testing was conducted in accordance with AMCA Standard 500-D using the three configurations shown. All data has been corrected to represent standard air at a density of .075 lb/ft3 (1.201 kg/m3). Actual pressure drop found in any HVAC system is a combination of many factors. This pressure drop information along with an analysis of other system influences should be used to estimate actual pressure losses for a damper installed in a given HVAC system. 5D 6D AMCA Test Figures Figure 5.3 Illustrates a fully ducted damper. This configuration has the lowest pressure drop of the three test configurations because entrance and exit losses are minimized by straight duct runs upstream and downstream of the damper. Figure 5.3 Figure 5.2 Illustrates a ducted damper exhausting air into an open area. This configuration has 5D a lower pressure drop than Figure 5.5 because entrance losses are minimized by a straight duct run upstream of the damper. Figure 5.5 Illustrates a plenum mounted damper. This configuration has the highest pressure drop Figure 5.2 because of extremely high entrance and exit losses due to the sudden changes of area in the system. D 4 (W) (H) 3.14 Figure 5.5 Damper Size Damper Size Damper Size 12 in. x 12 in. 24 in. x 24 in. 36 in. x 36 in. (914mm x 914mm) (305mm x 305mm) (610mm x 610mm) 10.0 5.5 5.2 5.3 10.0 10.0 9.0 Pressure Loss (in. wg) 5.5 5.2 5.3 9.0 9.0 8.0 8.0 8.0 7.0 7.0 7.0 6.0 6.0 6.0 Pressure Loss (in. wg) 5.5 5.2 5.3 5.0 5.0 4.0 4.0 3.0 3.0 2.0 2.0 1.0 1.0 1.0 0.9 0.9 0.9 0.8 0.8 0.8 0.7 0.7 0.7 0.6 0.6 0.6 Pressure Loss (in. wg ) 0.5 0.5 0.4 0.4 0.3 0.3 0.2 0.2 0.10 0.10 0.10 0.09 0.09 0.09 0.08 0.08 0.08 0.07 0.07 0.07 0.06 0.06 0.06 0.05 0.05 0.05 0.04 0.04 0.04 0.03 0.03 0.03 0.02 0.02 0.02 4 5 6 7 8 910 2 3 4 5 6 7 8 910 4 5 6 7 8 910 2 3 4 5 6 7 8 910 4 5 6 7 8 910 2 3 4 5 6 7 8 910 x 100 x 1000 x 100 x 1000 x 100 x 1000 Velocity (fpm) Velocity (fpm) Velocity (fpm) Application Data Damper Sideplate and Sleeve Dimensional Data The drawings below illustrate the factory standard sideplate and sleeve mountings for the SMD-401M. The standard "A" dimensions listed in the table provide adequate space for the mounting of actuators and controls. If space constraints are a problem the "A" dimension can be varied between 5 3.8 in. (136mm) and 12 in. (305mm). A 5 in. 12 in.** 6 in. 53/8" 5"A Sleeve Length Varies 33/4" 11/2" max.Sideplate Sleeve *With the exception of dampers 11 in. (279mm) high or less (12 in. (305mm)high or less if width is greater than 64 in. (1625mm)) with OCI option. ** On dampers 11 in. (279mm) high or less (12 in. (305mm)high or less if width is greater than 64 in. (1625mm)) with OCI op...