CaptiveAire S3G User Manual
ALL STATED SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE OR OBLIGATION.
FEATURES
• Wide operating range – velocities up to 3000
fpm
• Corrosion resistant galvanized steel construction
• Blade design for weather protection and
leakage
• Pre-punched mounting hole in flange frame
units
• Mechanically locked blade seals
VARIATIONS
• Counterweights and spring assist kits for vertical airflow and extremely low pressure
reliefs
• Electric actuators
• Chain pulls
• Sleeves
• Aluminum blades†
• Front or rear screens
† See chart page two for maximum fpm and
damper size
MODEL
TYPE
FRAME
OPENING DIMENSION
AIR FLOW ACTUATORS
QTY.
HORIZ.A* B* UP DOWN
FACTORY
INSTALLED
SHIPPED
LOOSE
VOLTAGE
VARIATIONS
A*
B*
AIR FLOW UP
(Spring Assist Kit included on
vertical air flow galvanized blades)
AIR FLOW DOWN
(Counter Balanced)
11/4"(35)
2" (51) Max.
FRAME TYPES
CHANNEL
Front Flange Shown
FRONT
FLANGE
REAR
FLANGE
3
/4"(19)
Max.
2" (51)
Max.
11/4"
(35)
3
(76)
B
Airflow
STANDARD CONSTRUCTION
FRAME
20 gage (1.0) galvanized steel.
BLADES
28 gage (.50) galvanized steel.
BLADE SEAL
Extruded vinyl mechanically locked into
blades.
AXLES
Stainless steel.
LINKAGE
Stainless steel pins, galvanized steel tie bar.
FINISH
Mill.
TEMPERATURE LIMITS
-40°F to +200°F (-40°C to 94°C).
MAXIMUM FACE VELOCITY
3000 fpm. Widths over 36" (914) up to 42"
(1067) are limited to 1500 fpm.
MINIMUM SIZE
8" x 8" (203 x 203).
MAXIMUM SIZE
Single section – 42" x 64" (1067 x 1626).
Multiple section assembly – Unlimited Size.
Dimensions in inches, parenthesis ( ) indicate millimeters.
Units furnished 1/4"(6) smaller than given
opening dimensions.
3900 Dr. Greaves Rd. • Kansas City, MO 64030 • (816) 761-7476 • FAX (816) 765-8955
S3G BACKDRAFT DAMPER
®
©Ruskin Manufacturing 1997Spec S3G-1097/Replaces S3G-696
PERFORMANCE DATA SUGGESTED SPECIFICATION
3900 Dr. Greaves Rd.
Kansas City, MO 64030
(816) 761-7476
FAX (816) 765-8955
www.ruskin.com
®
14" (356) Max.
6" (152)
Max.
MA220/MA230
ACTUATOR ENVELOPE DIMENSIONS
H
E
I
G
H
T
42"
(1067)
63"
(1600)
64"
(1626)
72"
(1829)
84"
(2134)
2) MA22O SERIES ACTUATORS
CONSULT RUSKIN
1) MA230 SERIES ACTUATOR
MA22X
SERIES
ACTUATOR
WIDTH
Number of actuators required
for various size backdraft dampers.
If not on chart consult Ruskin.
AIR VELOCITY
IN FEET PER MINUTE
THROUGH FREE AREA
600
800
1000
1200
1500
1800
2000
2500
3000
.110
.110
.075
.070
.100
.140
.180
.290
.390
STATIC PRESSURE DROP
IN INCHES W.G.
S3G PRESSURE DROP
Based on 36" x 36" (914 x 914) unit.
Furnish and install, at locations shown on plans or in accordance
with schedules, backdraft dampers that meet the following minimum construction standards: Frame shall be 20 gage (1.0) rollformed galvanized steel. Backdraft dampers with flange frame,
when required, shall have pre-punched mounting holes and welded
corner clips for maximum rigidity.
Blades shall be 28 gage (.50) roll-formed galvanized steel. Blade
edge seals shall be extruded vinyl, mechanically locked into blade
edge. Blade ends shall overlap for optimum weather protection.
Axles and linkage pins shall be stainless steel. Tiebar shall be galvanized steel and concealed in jamb. Backdraft dampers shall be
designed for maximum 3000 fpm face velocities. Dampers shall be
in all respects equivalent to Ruskin model S3G.
SPECIFIER SELECT OPTION
Electric actuators shall be (24 volt, 120 volt, 220 volt – specifier
select one) and shall be factory furnished and mounted or supplied
as a kit for field installation.
MAXIMUM VELOCITY FOR
ALUMINUM BLADE UNITS
8" (203) - 28" (711)
Over 28" (711) - 32" (813)
Over 32" (813) - 36" (914)
Units over 36" (914) wide will be multiple section
3000 FPM
2500 FPM
1750 FPM
MAXIMUM FPMDAMPER WIDTH
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