Greenheck DFD-M230 User Manual
Application
H
W
R
Model DFD-M230 is a multi-blade fire damper with 3V style blades.
The DFD-M230 has been qualified to 10.2 m/s (2000 fpm) and 1.0 kPa
(4 in. wg.) for dynamic closure in emergency fire situations. Model
DFD-M230 may be installed vertically (with blades running horizontal)
or horizontally and is rated for airflow in either direction.
Ratings
UL 555 Fire Resistance Rating
Fire Rating: 3 Hours
Dynamic Closure Rating: Actual limits are size dependent
Maximum Velocity: 10.2 m/s (2000 fpm)
Maximum Pressure: 1 kPa (4 in. wg)
Construction Standard Optional
Frame Material Galvanized steel -
Frame Material
Thickness
Frame Type 127mm x 25mm
Blade Material Galvanized steel -
Blade Material
Thickness
Blade Type 3V -
Linkage Plated steel out of
Axle Bearings Bronze -
Axle Material Plated steel -
Jamb Seals 304SS -
Closure Device Fusible link -
Closure Temperature
Actuator Manual quadrant -
1.5mm
(16 ga.)
(5 in. x 1in.)
hat channel
1.5mm
(16 ga.)
airstream, concealed
in jamb
74°C (165°F) UL 100°C (212°F),
-
-
-
-
141°C (286°F),
177°C (350°F)
UL
Model DFD-M230
Multi-Blade Fire Dampers
Steel 3V Blades
UL555 3 Hour Fire Resistance Rating
Model DFD-M230 is intended for installation in
accordance with fire damper requirements established
by:
National Fire Protection Association
NFPA Standards 80, 90A & 101
IBC International Building Codes
“UL CLASSIFIED (see complete marking on
product)”
“UL CLASSIFIED to Canadian safety standards
(see complete marking on product)”
Standard 555 (Listing #R13317)
Greenheck Kunshan Co. Ltd. and Greenheck
Fan Corporation certifies that the model DFDM230 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 Certified Ratings Programs. The
AMCA Certified Ratings Seal applies to air
performance ratings only.
LH
W x H Minimum Size
mm 203 x 152 914 x 914 or
Inches 8 x 6 36 x 36 or 32 x 48 64 x 48
Single Section Multi-Section
Features
• Frames are constructed with reinforced corners. Low
profile head and sill are used on sizes less than 432mm
(17 in.) high.
• Blades are reinforced with 3 longitudinal structurally
designed vee's.
Maximum Size
813 x 1219
1626 x 1219
RH
* W & H dimensions furnished approximately 6mm (1/4 in.) undersize.
(Add sleeve thickness for overall sleeved damper dimension)
Options
• Extra Fusible Links
• Flanges
• OCI (Open Closed Indication switches)
• POC retaining angles
• Sleeves
• Transitions (R, C)
Installation instructions available at www.greenheck.com
Pressure Drop Data DFD-M230
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 configurations shown. All
data has been corrected to represent standard air at a density of 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.
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 5.2 Illustrates a ducted damper exhausting air into an open area. This configuration 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 configuration has the highest pressure drop because of extremely high
entrance and exit losses due to the sudden changes of area in the system.
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