APPLICATION
Model FSD-312 is a high performance combination fire smoke
damper with class II leakage. High strength airfoil blades ensure 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 FSD-312 may
be installed vertically (with blades running horizontal) or horizontally
and is rated for airflow and leakage in either direction.
RATINgs
UL 555 Fire Resistance Rating:
Fire Rating:
1½ hours
Dynamic Closure Rating:
Actual ratings are size dependent
Max. Velocity:
up to 3000 fpm (15.2 m/s)
Max. Pressure:
4 in. wg (1 kPa)
UL555S Leakage Rating:
Leakage Class:
II
Operational Rating:
Actual ratings are size dependent
Max. Velocity:
up to 3000 fpm (15.2m/s)
Max. Pressure:
4 in. wg (1 kPa)
Maximum Temperature:
350°F (177°C)- depending upon the
actuator
sTANdARd CONsTRuCTION
Frame:
5 in. x 1 in. (127mm x 25 mm)
galvanized steel hat channel with
reinforced corners. A low profile
head and sill are used on sizes less
than 17 in. (432mm)
Blades:
Double skin airfoil shape of
galvanized steel with full length
structural reinforcement. 14 ga.
(2 mm) equivalent thickness.
seals:
Extruded silicone rubber blade seals.
Flexible stainless steel jamb seals.
Linkage:
Concealed in jamb.
Closure device:
RRL 165°F (74°C)
Axles:
1⁄2 in. (13mm) dia. plated steel.
Bearings:
Bronze sleeve type.
sIze LImITATIONs:
minimum size:
8 in. W x 6 in. H
(203 mm W x 152mm H)
maximum size:
Single Section:
32 in. W x 50 in. H
(813mm W x 1270mm H)
Multiple Section:
96 in. W x 50 in. H
(2435mm W x 1270mm H)
Vertical Only:
128 in. W x 100 in. H
(3251mm W x 2540mm H)
OPTIONAL FeATuRes:
• RRL/OCI (Open closed indication switches)
• 165ºF (74°C), 212ºF (100°C), 250ºF (121°C), 350ºF (177°C) RRL’s
available
• TOR (remote override closure allows damper to perform smoke
management functions during a fire emergency.)
• Electric or pneumatic actuators to accomplish smoke
management and system functions.
• POC retaining angles
• Smoke detectors
• Momentary Switch
• Transitions (R, C, O)
• PRV (pneumatic relief valve)
• Security Bars
• Sealed transitions and sleeves
model Fsd-312
Combination Fire smoke dampers
Steel Airfoil Blades
UL 555S Leakage Class II
UL555 1
1
⁄
2
Hour Fire Resistance Rating
*W&H dimensions furnished approximately 1/4 in. ( 6 mm) undersize.
(Add sleeve thickness for overall sleeved damper dimension)
Right hand drive is shown. Left hand drive is available upon request.
H*
W*
LH
RH
Model FSD-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
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)
“uL CLAssIFIed (see complete marking on prod-
uct)”
“uL CLAssIFIed to Canadian safety standards
(see complete marking on product)”
Standard 555 & 555S (Listing #R13317)
R
Greenheck Fan Corporation certifies that the
model FSD-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.
Installation instructions available at www.greenheck.com
