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APPLICATION
Model SMD-401 is a class I leakage rated smoke damper. High strength,
streamlined extruded airfoil blades insure lowest resistance to airflow in
HVAC systems with velocities to 3000 fpm (15.2 m/s) and 6 in. wg (1.5
kPa). Model SMD-401 may be installed vertically (with blades running
horizontal) or horizontally and is rated for airflow and leakage in either
direction.
RATINgS
Leakage:
Velocity:
Temperature:
Maximum Pressure:
STANDARD CONSTRUCTION
Frame:
Blades:
Seals:
Linkage:
Axles:
Bearings:
SIzE LIMITATIONS:
Minimum Size:
Maximum Size:
Single Section:
Multiple Section:
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
• Transformer
UL 555S leakage class I. Leakage
rated in both directions
Operational rated to 3000 fpm
(15.2 m/s) for sizes up to
48 in. W x 108 in. H or 144 in. H x 36 in. H
(1219mm x 2743mm) or
(3658mm x 914mm) or
2000 fpm (10.2 m/s) for sizes
greater than that. Rating is for
airflow in either direction through
damper.
250°F (121°C) with all actuators.
6 in. (1.5 kPa)
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.
Airfoil shape constructed of heavy
gauge extruded aluminum.
Structural reinforcement through
the entire length.
Extruded silicone rubber blade
seals. Flexible stainless steel jamb seals.
Concealed in jamb.
1
⁄
in. (13mm) dia. plated steel.
2
Bronze sleeve type
8 in. W x 8 in. H (203mm x 203mm)
48 in. W x 60 in.
(1219mm W x 1524mm H)
192 in. W x 72 in. H
(4877mm W x 1829mm H) or
48 in. W x 288 in. H
(1219mm W x 7315mm H) or
384 in. W x 36 in. H
(9754mm W x 914mm H)
Model SMD-401 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)
California State Fire Marshall
Listing#: 3230-0981:108 (smoke)
"UL CLASSIFIED (see complete marking on
product)"
"UL CLASSIFIED to Canadian safety standards
(see complete marking on product)"
Standard 555S (Listing #R13317)
LH
W*
*W&H dimensions furnished approximately
(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.greeenheck.com
Model SMD-401
Smoke Dampers
Extruded Airfoil Blades
UL 555S Leakage Class I
RH
1
/
in. (6mm) undersize.
4
H*
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Summary of Contents for Greenheck Smoke Dampers SMD-401
- Page 1 APPLICATION Model SMD-401 is a class I leakage rated smoke damper. High strength, streamlined extruded airfoil blades insure lowest resistance to airflow in HVAC systems with velocities to 3000 fpm (15.2 m/s) and 6 in. wg (1.5 kPa). Model SMD-401 may be installed vertically (with blades running horizontal) or horizontally and is rated for airflow and leakage in either direction.
- Page 2 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/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.
-
Page 3: Application Data
Application Data Damper Sideplate and Sleeve Dimensional Data The drawings below illustrate the factory standard sideplate and sleeve mountings for the SMD-401. The standard "A" dimen- sions listed in the table provide adequate space for the mounting of actuators and controls. If space constraints are a problem the "A"... -
Page 4: Specifications
UL 555S rated for leakage and airflow in either direction through the damper. The basis of design is Greenheck Model SMD-401. (54mm) 16 in. (406mm) Min. TYPE C in. (3mm) undersize. Copyright ©2007 Greenheck Fan Corporation (54mm) SMD-401 Rev. 5 April 2007...