Model OFSd-212
Out Of Wall Combination FIRE SMOKE dAMPERS
APPLICATION
Steel 3V Blades
Model OFSD-212 is an ‘out of the wall’ high performance combina-
tion fire smoke damper with 3V style blades. OFSD-212 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. This model's operational ratings of 2000 fpm (10.2
m/s) and pressures to 4 in. wg (1 kPa). OFSD-212 shall be installed
vertically (with blades running horizontal) or horizontally and is rated
for airflow and leakage in either direction.
UL 555S Leakage Class II
UL555 11⁄2 Hour Fire Resistance Rating
Horizontal or Vertical Mount
Model OFSD-212 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
UL555 Fire Resistance Rating:
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)
Fire Rating:
Dynamic Closure Rating: Actual ratings are size dependent
11⁄2 hours in walls
Max. Velocity:
Max. Pressure:
2000 fpm (10.2 m/s)
4 in. wg (1 kPa) - differential
pressure
UL555S Leakage Rating:
Leakage Class:
II
Operational Rating:
Max. Velocity:
Actual ratings are size dependent
2000 fpm (10.2m/s)
“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:
4 in. wg (1 kPa)
Max. Temperature:
350ºF (177ºC)- depending upon the
actuator
STANdARd CONSTRuCTION
Frame:
5 in. x 1 in. (127mm x 25mm)
Greenheck Fan Corporation certifies that the
model OFSD-212 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
galvanized steel hat channel with
reinforced corners. A low profile head
and sill are used on sizes less than
17 in. (432mm) high.
requirements of the AMCA Certified Ratings Pro-
R
Blades:
16 ga. (1.5mm) galvanized steel,
reinforced with 3 longitudinal
structurally designed vee's.
Extruded silicone rubber blade seals.
Flexible stainless steel jamb seals
Concealed in jamb
grams. The AMCA Certified Ratings Seal applies to
air performance ratings only.
Seals:
Linkage:
Closure device:
Axles:
Bearings:
Sleeve:
UL listed 165°F (74ºC) RRL
1⁄2 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: 36 in. W x 36 in.H
(914mm x 914mm)
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 actuators
• Momentary switch
• Security bars
• Sealed transition and sleeves
* W & H dimensions furnished approximately ¼ in. (6mm) undersize.
(Add blanket thickness ( ⁄8 in.[3mm]) and sleeve thickness for overall
sleeved damper dimension)
1
Oversize wall opening as follows:
3
Nominal damper size plus ⁄8 in.(9.5mm) (see Page 6)
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AMCA 5.2 Pressure drop
OFSd-212
5D
Figure 5.2
ꢀ
* This size is based on multi-section unit.
Pressure Drop
Pressure Drop
Pressure Drop
Pressure Drop
Pressure Drop
Velocity (fpm)
(in. wg)
Velocity (fpm)
Velocity (fpm)
Velocity (fpm)
Velocity (fpm)
(in. wg)
(in. wg)
(in. wg)
(in. wg)
500
1000
1500
2000
2500
3000
3500
0.04
0.14
0.31
0.55
0.86
1.24
1.69
500
1000
1500
2000
2500
3000
3500
0.02
0.07
0.16
0.29
0.45
0.65
0.89
500
0.01
0.04
0.09
0.16
0.25
0.36
0.49
500
0.01
0.06
0.13
0.23
0.36
0.52
0.70
500
0.03
0.10
0.23
0.41
0.63
0.91
1.24
1000
1500
2000
2500
3000
3500
1000
1500
2000
2500
3000
3500
1000
1500
2000
2500
3000
3500
Greenheck Fan Corporation certifies that the
model OFSD-212 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 Pro-
grams. The AMCA Certified Ratings Seal applies to
air performance ratings only.
R
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AMCA 5.3 Pressure drop
OFSd-212
5D
6D
Figure 5.3
* This size is based on multi-section unit.
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
0.02
0.09
0.20
0.36
0.56
0.81
1.10
500
1000
1500
2000
2500
3000
3500
0.01
0.04
0.09
0.16
0.25
0.35
0.48
500
1000
1500
2000
2500
3000
3500
0.01
0.03
0.06
0.11
0.17
0.24
0.33
500
1000
1500
2000
2500
3000
3500
0.01
0.04
0.10
0.17
0.27
0.39
0.53
500
1000
1500
2000
2500
3000
3500
0.02
0.07
0.16
0.29
0.45
0.64
0.88
Greenheck Fan Corporation certifies that the
model OFSD-212 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 Pro-
grams. The AMCA Certified Ratings Seal applies
to air performance ratings only.
R
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AMCA 5.5 Pressure drop
OFSd-212
* This size is based on multi-section unit.
Pressure Drop
Pressure Drop
Pressure Drop
Pressure Drop
Pressure Drop
Velocity (fpm)
500
1000
1500
2000
2500
3000
3500
0.04
0.17
0.38
0.67
1.04
1.50
2.05
500
1000
1500
2000
2500
3000
3500
0.06
0.22
0.50
0.89
1.39
2.00
2.72
500
1000
1500
2000
2500
3000
3500
0.03
0.14
0.31
0.54
0.85
1.22
1.66
500
1000
1500
2000
2500
3000
3500
0.03
0.12
0.26
0.46
0.73
1.05
1.42
500
1000
1500
2000
2500
3000
3500
0.03
0.13
0.30
0.53
0.83
1.19
1.62
Greenheck Fan Corporation certifies that the
model OFSD-212 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 Pro-
R
grams. The AMCA Certified Ratings Seal applies to
air performance ratings only.
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Application data
OFSd-212
Actuator Space Envelopes
The drawing below and corresponding table show the minimum dimensions
required for internal actuator mounting on OFSD-212s. 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).
Factory supplied thermal
blanket around sleeve
Honeywell
Actuator Space
ML-4XXX series MS4120 series
MS4XXX series
Envelopes
X
Grille
(Supplied by
others)
'X' dimension
5.88 in. (149mm)
12 in. (305mm)
12 in. (305mm)
5.88 in. (149mm)
12 in. (305mm)
12 in. (305mm)
Minimum Width
Minimum Height
Sleeve Information
‘Sleeve Length’ = depth of Grille (or Register)
+ X (Actuator: see table above)
Combination Fire
Smoke Damper
+ 5 in. [127mm] (Damper Width)
"
1
7
⁄
2
5 in.
+ 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])
Max.
Fire rated barrier
A
Sleeve Length
‘Sleeve Gauge’ = 16 Ga. or 20 Ga. (1.5mm or 1mm)
Wall Opening Sizing
To accommodate for sleeve and thermal blanket thickness,
the wall opening must be oversized by 3⁄8 in. (9.5mm) as
shown. For example, if the nominal damper size required
is 18 in. x 14 in. (457mm x 356mm), the wall opening size
needs to be 18 3⁄8 in. x 14 3⁄8 in. (467mm x 365mm). The
damper itself is undersized 1⁄4 in. (6mm) on each dimension
for an actual damper size of 17 3⁄4 in. x 13 3⁄4 in. (451mm x
349mm). This is also the inside dimensions of the sleeve (for
grille considerations).
Fire Smoke Damper
With Sleeve And
Thermal Blanket
Wall
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.
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 supplied with a factory
mounted sleeve; sleeve shall be wrapped with UL approved thermal
barrier material.
The Damper Manufacturer's submittal data shall certify all air
performance pressure drop data is licensed in accordance with the
AMCA Certified Ratings Program for Test Figures 5.2, 5.3, and 5.5.
Damper air performance data shall be developed in accordance with
the latest edition of AMCA Standard 500-D. Dampers shall be labeled
with the AMCA Air Performance Seal.
Each damper/actuator combination shall have a UL555S elevated
temperature rating of 250°F (121°C) 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. Damper actuator shall be (specifier select one of the
following) electric type for 120 (24 or 230) Volt operation.
Damper must be rated for mounting vertically (with blades running
horizontal) or horizontally and be UL 555S rated for leakage and
airflow in either direction through the damper. Each damper shall be
supplied with a 165°F (74°C) RRL.
Damper blades shall be 16 ga. (1.5mm) galvanized steel 3V type with
three longitudinal grooves for reinforcement. 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.
The basis of design is Greenheck Model OFSD-212.
Copyright ©2006 Greenheck Fan Corporation
OFSD-212 Rev 3 June 2006
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