Summary of the content on the page No. 1
Model SMD-203
Smoke Dampers
Steel 3V Blades
Application
UL 555S Leakage Class III
Model SMD-203 is a leakage rated smoke damper with 3V style
blades. The SMD-203 has been qualified to 2,000 fpm (10.2 m/s) and
Model SMD-203 meets the requirements for smoke
4 in. wg (1 kPa) for operational closure in emergency smoke control
dampers established by:
situations. Model SMD-203 may be installed vertically (with blades
National Fire Protection Association
running horizontally) or horizontally and
Summary of the content on the page No. 2
Pressure Drop Data SMD-203 This pressure drop testing was conducted in accordance with AMCA Standard 500-D using the three configurations shown. All 3 3 data has been corrected to represent standard air at a density of .075 lb/ft (1.201 kg/m ). 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 sy
Summary of the content on the page No. 3
5D 6D Figure 5.3 AMCA 5.2 Pressure Drop SMD-203 5D 4 (W) (H) = D 3.14 Figure 5.2 Figure 5. 5 12 in. x 12 in. (305mm x 305mm) 24 in. x 24 in. (610mm x 610mm) 36 in. x 36 in. (914mm x 914mm) 12 in. x 48 in. (305mm x 1219mm) 48 in. x 12 in. (1219mm x 305mm) Pressure Drop Pressure Drop Pressure Drop Pressure Drop Pressure Drop Velocity (fpm) Velocity (fpm) Velocity (fpm) Velocity (fpm) Velocity (fpm) (in. wg) (in. wg) (in. wg) (in. wg) (in. wg) 500 0.04 500 0.02 500 0.01 500 0.01 500 0.0
Summary of the content on the page No. 4
AMCA 5.3 Pressure Drop SMD-203 5D 6D Figure 5.3 5D 4 (W) (H) = D 3.14 Figure 5.2 Figure 5. 5 12 in. x 12 in. (305mm x 305mm) 24 in. x 24 in. (610mm x 610mm) 36 in. x 36 in. (914mm x 914mm) 12 in. x 48 in. (305mm x 1219mm) 48 in. x 12 in. (1219mm x 305mm) Pressure Drop Pressure Drop Pressure Drop Pressure Drop Pressure Drop Velocity (fpm) Velocity (fpm) Velocity (fpm) Velocity (fpm) (in. wg) (in. wg) (in. wg) (in. wg) Velocity (fpm) (in. wg) 500 0.02 500 0.01 500 0.01 500 0.01 500 0.
Summary of the content on the page No. 5
5D 6D 5D 4 (W) (H) D 3.14 AMCA 5.5 Pressure Drop SMD-203 12 in. x 12 in. (305mm x 305mm) 24 in. x 24 in. (610mm x 610mm) 36 in. x 36 in. (914mm x 914mm) 12 in. x 48 in. (305mm x 1219mm) 48 in. x 12 in. (1219mm x 305mm) Pressure Drop Pressure Drop Pressure Drop Pressure Drop Pressure Drop Velocity (fpm) Velocity (fpm) Velocity (fpm) Velocity (fpm) Velocity (fpm) (in. wg) (in. wg) (in. wg) (in. wg) (in. wg) 500 0.04 500 0.06 500 0.03 500 0.03 500 0.03 1000 0.17 1000 0.22 1000 0.14 10
Summary of the content on the page No. 6
Application Data Damper Sleeve Dimensional Data The drawings below and corresponding table show the position of the SMD-203 damper when mounted in a factory sleeve. The standard mounting locations provide enough space for the mounting of actuators, controls and allow space for installa- tion of retaining angles and duct connections. The standard location of a damper mounted in a factory sleeve ("A" dimension) is shown below. The damper can be posi- tioned at other locations within a range of 6
Summary of the content on the page No. 7
Damper Sizing Information Dampers larger than maximum single section size are supplied as a factory assembly of two or more sections of equal size. The following figures show maximum damper section size and assembly configurations for multi-section dampers. Double Section Single Section 50 in. 50 in. (1270mm) (1270mm) 50 in. (1270mm) 96 in. (2435mm) 32 in. (813mm) 32 in. (813mm) 64 in. (1626mm) 32 in. (813mm) When a fire/smoke damper is being used in conjunction with round or oval duc
