Greenheck Fan SMD-203 User Manual
Application
H*
W*
R
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
4 in. wg (1 kPa) for operational closure in emergency smoke control
situations. Model SMD-203 may be installed vertically (with blades
running horizontally) or horizontally and is rated for airflow and leakage
in either direction.
Ratings
Leakage: UL 555S leakage class III
Pressure: 4 in. wg (1 kPa) - differential pressure
Consult factory for sizes available in
6 in. wg (1.5 kPa)
Velocity: Operational rated to 2000 fpm
(10.2 m/s). Rating is for airflow in
either direction through damper.
Temperature: 350°F (177°C) depending on the
actuator
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: 16 ga. (1.5mm) galvanized steel,
reinforced with 3 longitudinal
structurally designed vee’s.
Seals: Flexible stainless steel jamb seals.
Linkage: Concealed in jamb.
Axles:
Bearings: Bronze sleeve type
1
⁄2 in. (13mm) dia. plated steel
Model SMD-203
Smoke Dampers
Steel 3V Blades
UL 555S Leakage Class III
Model SMD-203 meets the requirements for smoke
dampers established by:
National Fire Protection Association
NFPA Standards 92A, 92B, 101 & 105
IBC International Building Codes
New York City (MEA listing #260-91-M)
CSFM California State Fire Marshal
Leakage (Smoke) Damper Listing (#3230-0981:104)
“UL CLASSIFIED (see complete marking on
product)”
“UL CLASSIFIED to Canadian safety standards
(see complete marking on product)”
Standard 555S (Listing #R13317)
Greenheck Fan Corporation certies that the
model SMD-203 shown herein is licensed to bear
the AMCA Seal. The ratings shown are based on
tests and procedures performed in accordance
with AMCA Publication 511 and comply with
the requirements of the AMCA Certied Ratings
Programs. The AMCA Certied Ratings Seal
applies to air performance ratings only.
Size Limitations
Minimum Size:
(203mm W x 152mm H)
Maximum Size:
Single Section - 32 in. W x 50 in. H
(813mm W x 1270mm H)
36 in. W x 48 in. H
(914mm W x 1219mm H)
Multiple Section - 144 in. W x 100 in. H
(3658mm W x 2540mm H)
288 in. W x 50 in. H
(7315 mm W x 1270mm H)
8 in. W x 6 in. 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.
• Transitions (R, C, O)
• POC retaining angles
• Momentary Switch
• Smoke detectors
• Sealed transition and sleeves
• Fail open
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 www.greenheck.com
Pressure Drop Data SMD-203
5D 6D
5D
D
4 (W) (H
)
3.14
This pressure drop testing was conducted in accordance with AMCA Standard 500-D using the three congurations shown. All
data has been corrected to represent standard air at a density of .075 lb/ft
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.
AMCA Test Figures
Figure 5.3 Illustrates a fully ducted damper. This conguration has the lowest pressure drop of the three test congurations
because entrance and exit losses are minimized by straight duct runs upstream and downstream of the damper.
Figure 5.2 Illustrates a ducted damper exhausting air into an open area. This conguration has 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 conguration has the highest pressure drop because of extremely high
entrance and exit losses due to the sudden changes of area in the system.
3
(1.201 kg/m3).
AMCA 5.2 Pressure Drop SMD-203
5D 6D
5D
D
=
4 (W) (H )
3.14
Figure 5.3
Figure 5.2
R
Velocity (fpm)
Pressure Drop
(in. wg)
Velocity (fpm)
Pressure Drop
(in. wg)
Velocity (fpm)
Pressure Drop
(in. wg)
Velocity (fpm)
Pressure Drop
(in. wg)
500 0.04 500 0.02 500 0.01 5000.01
1000 0.14 10000.07 10000.04 1000 0.06
15000.31 15000.16 15000.09 1500 0.13
2000 0.55 20000.29 20000.1620000.23
2500 0.86 25000.45 25000.2525000.36
30001.24 30000.65 30000.3630000.52
3500 1.69 3500 0.89 3500 0.49 3500 0.70
4000 2.20 4000 1.16 4000 0.64 4000 0.92
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)
Velocity (fpm)
Pressure Drop
(in. wg)
5000.03
1000 0.10
1500 0.23
2000 0.41
2500 0.63
3000 0.91
3500 1.24
4000 1.62
48 in. x 12 in. (1219mm x 305mm)
Greenheck Fan Corporation certies that the
model SMD-203 shown herein is licensed to bear
the AMCA Seal. The ratings shown are based on
tests and procedures performed in accordance
with AMCA Publication 511 and comply with
the requirements of the AMCA Certied Ratings
Programs. The AMCA Certied Ratings Seal
applies to air performance ratings only.
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