Greenheck Combination Fire Smoke Damper FSD-211 Specification Sheet page 7

damper sizing Information
Dampers larger than maximum single section size are supplied as a factory assembly of two or more sections of equal size.
The following figures show maximum damper section size and assembly configurations for multi-section dampers.
Single Section
50 in.
(1270mm)
Transitioned damper
dimensions
16 in. (406mm)
Min.
TYPE R
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 I.
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 or
pneumatic type for 25 psi minimum (30 psi maximum) operation.
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
Double Section
50 in.
(1270mm)
32 in. (813mm)
When a fire/smoke damper is being used in conjunction with round or oval ductwork, the
FSD-211 can be supplied in a factory sleeve with round or oval transitions on both ends
of the sleeve. Dampers should be ordered to the duct dimensions. Drawings below show
overall damper size.
2 1 / in.
8
(54mm)
16 in. (406mm)
100 in. Min.
(2540mm)
50 in.
(1270mm)
32 in. (813mm)
32 in. (813mm)
64 in. (1626mm)
H*
2 1 / in.
8
(54mm)
16 in. (406mm)
TYPE O
*
These dimensions are furnished approximately
(6mm) undersize, except round and oval dimensions which
are approximately
T s = (2)(Sleeve Thickness)
128 in. (2540mm)
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.
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.
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. The basis of design is Greenheck
Model FSD-211.
50 in.
(1270mm)
32 in. (813mm)
H*
2 1 / in.
8
(54mm)
Min.
TYPE C
1
/ in. (3mm) undersize.
8
Copyright ©2006 Greenheck Fan Corporation
FSD-211 Rev 3 June 2006
96 in. (2435mm
1
/ in.
4