Greenheck Fan Ventilation Hood OFSD 312 User Manual

Model OFSD-312  
Out of Wall Combination Fire Smoke Dampers  
Application  
Steel Airfoil Blades  
UL 555S Leakage Class I  
Model OFSD-312 is an ‘out of the wall’ high performance combination  
fire smoke damper with class II leakage. OFSD-312 is approved for  
use in walls, partitions, and floors with fire resistance ratings less than  
3 hours. Removal of wall grille allows access to actuator and other  
components. High strength airfoil blades insure the lowest resistance  
to airflow in HVAC systems with velocities to 3000 fpm (15.2 m/s)  
and pressures to 4 in. wg (1 kPa). Model OFSD-312 shall be installed  
vertically (with blades running horizontal) or horizontally and is rated  
for airflow and leakage in either direction.  
UL555 112 Hour Fire Resistance Rating  
Horizontal or Vertical Mount  
Model OFSD-312 meets the requirements for fire  
dampers, smoke dampers and combination fire  
smoke dampers established by:  
National Fire Protection Association  
NFPA Standards 80, 90A, 92A, 92B, 101 & 105  
Ratings  
IBC International Building Codes  
ICBO Uniform Building Codes  
CSFM California State Fire Marshal  
Fire Damper Listing (#3225-0981:103)  
Leakage (Smoke) Damper Listing (#3230-0981:104)  
New York City (MEA listing #260-91-M)  
UL555 Fire Resistance Rating:  
Fire Rating:  
112 hours in walls  
Dynamic Closure Rating: Actual ratings are size dependent  
Max. Velocity:  
Max. Pressure:  
UL555S Leakage Rating:  
Leakage Class:  
up to 3000 fpm (15.2 m/s)  
4 in. wg (1 kPa) - differential pressure  
I
Operational Rating:  
Max. Velocity:  
Actual ratings are size dependent  
up to 3000 fpm (15.2m/s)  
4 in. wg (1 kPa)  
350ºF (177ºC)- depending upon the  
actuator  
“UL CLASSIFIED (see complete marking on  
product)”  
“UL CLASSIFIED to Canadian safety standards  
(see complete marking on product)”  
Standard 555 & 555S (Listing #R13317)  
Max. Pressure:  
Max. Temperature:  
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.  
Greenheck Fan Corporation certifies that the  
model OFSD-312 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  
Blades:  
Seals:  
Double skin airfoil shape of  
galvanized steel with full length  
structural reinforcement. 14 ga.  
(2mm) equivalent thickness.  
Extruded silicone rubber blade seals.  
Flexible stainless steel jamb seals.  
Concealed in jamb  
Certified Ratings Programs. The AMCA Certified  
R
Ratings Seal applies to air performance ratings  
only.  
Linkage:  
Fusible Link:  
Axles:  
Bearings:  
Sleeve:  
RRL 165°F (74ºC)  
12 in. (13mm) dia. plated steel  
Bronze sleeve type  
Galvanized; wrapped with thermal  
blanket  
Size Limitations:  
Minimum Size:  
12 in.W x 12 in.H  
(305mm x 305mm)  
Maximum Size:  
Single section:  
32 in. W x 30 in. H  
(813mm W x 762mm H)  
36 in.W x 36 in.H  
(914mm x 914mm)  
Multiple Section:  
Optional Features:  
• POC retaining Angles  
• RRL/OCI (open closed indication switches)  
• 165ºF (74ºC), 212ºF (100ºC), 250ºF (121ºC), 350ºF (177ºC) RRL’s  
available  
• TOR (remote override allows damper to perform smoke  
management functions during fire emergency.)  
• Electric or pneumatic actuators to accomplish smoke  
management and system functions.  
• Smoke detectors  
* W & H dimensions furnished approximately 14 in. (6mm) undersize.  
Add blanket thickness (18 in.[3mm]) and sleeve thickness for  
overall sleeved damper dimension)  
Oversize wall opening as follows:  
Nominal damper size plus 38 in.(9.5mm) (see Page 6)  
• Momentary switch  
• PRV (pneumatic relief valve)  
• Security bars  
•Sealed transition and sleeves  
 
AMCA 5.2 Pressure Drop  
OFSD-312  
5D  
*
36x36  
12x48  
48x12  
12x12  
24x24  
* Sizes are in inches.  
12 in. x 12 in. (305mm x 305mm)  
24 in. x 24 in. (610mm x 610mm)  
36in. x 36 in. (914mm x 914mm)  
12in. X 48 in. (305mm x 1219mm)  
48 in. x 12 in. (1219mm x 305mm)  
Velocity  
(fpm)  
Pressure Drop  
(in. wg)  
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  
0.03  
0.12  
0.26  
0.46  
0.72  
1.04  
1.41  
1.84  
500  
0.01  
0.06  
0.12  
0.22  
0.34  
0.49  
0.67  
0.87  
500  
0.01  
0.06  
0.12  
0.22  
0.34  
0.49  
0.67  
0.88  
500  
0.01  
0.05  
0.12  
0.21  
0.33  
0.48  
0.65  
0.85  
500  
1000  
1500  
2000  
2500  
3000  
3500  
4000  
0.02  
0.08  
0.18  
0.33  
0.51  
0.74  
1.00  
1.31  
1000  
1500  
2000  
2500  
3000  
3500  
4000  
1000  
1500  
2000  
2500  
3000  
3500  
4000  
1000  
1500  
2000  
2500  
3000  
3500  
4000  
1000  
1500  
2000  
2500  
3000  
3500  
4000  
Greenheck Fan Corporation certifies that the  
model OFSD-312 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.  
R
 
AMCA 5.3 Pressure Drop  
OFSD-312  
5D  
6D  
*
24x24  
12x12  
36x36  
48x12  
12x48  
* Sizes are in inches.  
12 in. x 12 in. (305mm x 305mm)  
24 in. x 24 in. (610mm x 610mm)  
36in. x 36 in. (914mm x 914mm)  
12in. 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)  
(in. wg)  
Velocity (fpm)  
(in. wg)  
Velocity (fpm)  
(in. wg)  
Velocity (fpm)  
(in. wg)  
Velocity (fpm)  
(in. wg)  
500  
1000  
1500  
2000  
2500  
3000  
3500  
4000  
0.01  
0.06  
0.13  
0.23  
0.37  
0.53  
0.73  
0.95  
500  
0.01  
0.02  
0.06  
0.10  
0.16  
0.23  
0.32  
0.42  
500  
1000  
1500  
2000  
2500  
3000  
3500  
4000  
0.01  
0.02  
0.05  
0.09  
0.14  
0.21  
0.29  
0.38  
500  
1000  
1500  
2000  
2500  
3000  
3500  
4000  
0.01  
0.02  
0.06  
0.10  
0.16  
0.24  
0.33  
0.43  
500  
0.01  
0.04  
0.10  
0.18  
0.29  
0.42  
0.57  
0.74  
1000  
1500  
2000  
2500  
3000  
3500  
4000  
1000  
1500  
2000  
2500  
3000  
3500  
4000  
Greenheck Fan Corporation certifies that the  
model OFSD-312 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.  
R
 
AMCA 5.5 Pressure Drop  
OFSD-312  
*
36x36  
48x12  
12x12  
12x48  
24x24  
* Sizes are in inches.  
12 in. x 12 in. (305mm x 305mm)  
24 in. x 24 in. (610mm x 610mm)  
36in. x 36 in. (914mm x 914mm)  
12in. X 48 in. (305mm x 1219mm)  
48 in. x 12 in. (1219mm x 305mm)  
Velocity  
(fpm)  
Pressure Drop  
(in. wg)  
Velocity  
(fpm)  
Pressure Drop  
(in. wg)  
Velocity  
(fpm)  
Pressure Drop  
Velocity  
(fpm)  
Pressure Drop  
(in. wg)  
Velocity  
(fpm)  
Pressure Drop  
(in. wg)  
(in. wg)  
500  
1000  
1500  
2000  
2500  
3000  
3500  
4000  
0.04  
0.18  
0.42  
0.75  
1.17  
1.68  
2.29  
2.09  
500  
1000  
1500  
2000  
2500  
3000  
3500  
4000  
0.03  
0.13  
0.29  
0.52  
0.81  
1.17  
1.60  
2.14  
500  
1000  
1500  
2000  
2500  
3000  
3500  
4000  
0.03  
0.12  
0.27  
0.48  
0.75  
1.08  
1.48  
1.93  
500  
1000  
1500  
2000  
2500  
3000  
3500  
4000  
0.03  
0.12  
0.27  
0.49  
0.77  
1.11  
1.51  
1.97  
500  
1000  
1500  
2000  
2500  
3000  
3500  
4000  
0.03  
0.14  
0.32  
0.57  
0.89  
1.28  
1.75  
2.29  
Greenheck Fan Corporation certifies that the  
model OFSD-312 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.  
R
 
Application Data  
OFSD-312  
Actuator Space Envelopes  
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The drawing below and corresponding table show the minimum dimensions  
required for internal actuator mounting on OFSD-312s. The standard mounting  
locations provide enough space for the mounting of actuators and controls plus  
allowing space for a grille and duct connection (see Sleeve Length below).  
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Honeywell  
Actuator Space  
Envelopes  
9
ML-4XXX series  
MS4XXX series  
MS-4120 series  
‘X’ Dimension  
5.88 in.(149mm) 5.88 in. (149mm)  
Minimum Width  
Minimum Height 12 in. (305mm)  
12 in. (305mm)  
12 in. (305mm)  
12 in. (305mm)  
Sleeve Information  
‘Sleeve Length’ = Depth of Grille (or Register)  
+ X (Actuator: see table above)  
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JODMVEFT  
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+ 5 in.[127mm] (Damper Width)  
+ 1.25 in.[31.8mm] (for duct connection)  
(round up to nearest length: 14 in., 16 in., 18  
in., or 20 in. [356, 406, 457, 508mm])  
'JSF  
SBUFE  
CBSSJFS  
ꢁꢀcꢄ  
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ꢇꢄ  
‘Sleeve Gauge’ = 16 Ga. or 20 Ga. (1.5mm or 1mm)  
"
4MFFWFꢀ-FOHUI  
Wall Opening Sizing  
To accommodate for sleeve and thermal blanket thickness,  
Fire Smoke Damper  
With Sleeve And  
Thermal Blanket  
3
the wall opening must be oversized by ⁄8 in. (9.5mm) as  
Wall  
shown. For example, if the nominal damper size required  
is 18 in. x 14 in. (457mm x 356mm), the wall opening size  
3
3
needs to be 18 ⁄8 in. x 14 ⁄8 in. (467mm x 365mm). The  
1
damper itself is undersized ⁄4 in. (6mm) on each dimension  
3
3
for an actual damper size of 17 ⁄4 in. x 13 ⁄4 in. (451mm x  
349mm). This is also the inside dimensions of the sleeve (for  
grille considerations).  
Nominal  
Damper  
Height + 3/8 in.  
Nominal Damper  
Width + 3  
8 in.  
/
Specifications  
Combination Fire Smoke Dampers meeting the following  
specifications shall be furnished and installed where shown on  
plans and/or as described in schedules. Dampers shall meet the  
requirements of NFPA 80, 90A, 92A, 92B, 101 & 105 and further shall  
be tested, rated and labeled in accordance with the latest edition  
of UL Standards 555 and 555S. Dampers shall have a UL555 fire  
rating of 1½ hours and be of low leakage design qualified to UL 555S  
Leakage Class II.  
UL555S rated for leakage and airflow in either direction through the  
damper.  
Damper blades shall be of the double skin airfoil type and shall  
have an equivalent thickness of 14 ga. (2mm) Damper frame shall  
be galvanized steel formed into a structural hat channel shape with  
reinforced corners. Bearings shall be sintered bronze sleeve type  
rotating in extruded holes in the damper frame. Blade edge seals  
shall be silicone rubber designed to inflate and provide a tighter seal  
against leakage as pressure on either side of the damper increases.  
Jamb seals shall be stainless steel compression type. Blades shall be  
completely symmetrical relative to their axle pivot point, presenting  
identical resistance to airflow in either direction or pressure on either  
side of the damper.  
Each damper shall be UL qualified for mounting out of the plane  
of the wall to allow ‘through the grille’ access to actuator and  
controls. Each damper/actuator combination shall have a UL555S  
elevated temperature rating of 250° F (121ºC) minimum and shall  
be operational and dynamic rated to operate at maximum design air  
flow at its installed location. Each damper shall be supplied with an  
appropriate actuator installed by the damper manufacturer at the  
time of damper fabrication.  
Each damper shall be supplied with a factory mounted sleeve; sleeve  
shall be wrapped with UL approved thermal barrier material. Each  
damper shall be supplied with a 165°F (74ºC) RRL.  
Damper actuator shall be (specifier select one of the following)  
electric type for 120 (24 or 230) Volt operation. Each damper shall be  
The basis of design is Greenheck Model OFSD-312.  
Copyright ©2006 Greenheck Fan Corporation  
OFSD-312 Rev 3 June 2006  
 

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