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APPLICATION
Model SMD-401M is a class I leakage rated modulating smoke
damper. The model SMD-401M serves the function of
both a control damper and smoke damper. 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:
Operational Rating: Actual ratings are size dependent.
Max. Velocity:
Max. Pressure:
Temperature:
STANDARD CONSTRUCTION
Frame:
Blades:
Seals:
Linkage:
Axles:
Bearings:
SIzE LIMITATIONS:
Minimum Size:
Maximum Size:
Single Section:
Multi 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
• Transitions (R, C, O)
• Sealed transitions and sleeves
I
up to 2000 fpm (10.2 m/s)
4 in. wg (1 kPa)
250°F (121ºC) with all actuators.
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.
⁄
in. (13mm) dia. plated steel.
1
2
Bronze sleeve type.
8 in. W x 8 in. H
(203mm W x 203mm H)
36 in. W x 36 in. H
(914mm W x 914mm H)
144 in. W x 36 in. H
(3658mm W x 914mm H)
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)
"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.greenheck.com
SMD-401M
Smoke Dampers
Extruded Airfoil Blades
UL 555S Leakage Class I
1
/
in. (6mm) undersize.
4
H*
RH
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Related Manuals for Greenheck Smoke Dampers SMD-401M
Summary of Contents for Greenheck Smoke Dampers SMD-401M
-
Page 1: Optional Features
APPLICATION Model SMD-401M is a class I leakage rated modulating smoke damper. The model SMD-401M serves the function of both a control damper and smoke damper. 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. - Page 2 SMD-401M 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 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"...
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Page 4: Specifications
UL 555S rated for leakage and airflow in either direction through the damper. The basis of design is Greenheck Model SMD-401M. 16 in. (406mm) Min. TYPE C Copyright © 2007 Greenheck Fan Corporation SMD-401M Rev. 5 April 2007 (54mm)