5 3/4" (146)
16" (406) STANDARD
NOM. DIA.
- 1/8" (3)
ACTUATOR
DRIVE
SHAFT
INSTALLATION
RETAINING PLATES
INCLUDED
Model 1290F-SS fire damper is ideal for high humidity or mildly
corrosive applications where building codes require a fire damper
for the protection of ductwork penetrations in walls or floors that
have a fire resistance rating of up to 2 hours. The 1290F-SS is
classified for use in dynamic "fans on" systems where the HVAC
system remains operative in the event of a fire. Damper closure
under airflow is assured.
The 1290F-SS is a true round fire damper designed and qualified
specifically for point-of-origin fire containment where round
ductwork passes through metal or wood stud drywall partitions
and masonary walls or floors.
Features include the industry proven over-center knee lock design
with high torque spring/fusible link closure. Supplied as standard
with a crank arm and locking screw which holds the damper in the
fully open position, but may also be used for system balancing if
required. Available in either Type 304 or 316 stainless steel.
STANDARD CONSTRUCTION:
Frame:
20 ga. (1.0) stainless steel integral sleeve and
retaining plates.
Blade:
2 x 20 ga. (1.0) stainless steel laminated together.
14 ga. (2.0) equivalent thickness.
Linkage:
Stainless steel; jackshaft to blade.
Bearings:
1/ 2" (13) dia. stainless steel.
Axles:
1/2" (13) dia. stainless steel double bolted to blades.
Jackshaft:
1/2" (13) dia. stainless steel. Supplied with
factory mounted hand locking quadrant.
Fusible Link:
165°F (74°C) standard. 212°F (100°C) available.
Sizes (Duct Dia.):
Note:
Dampers available in 1" (25) increments. Vertical or horizontal
installation.
CONSTRUCTION TYPE:
❑
304
Type 304 Stainless Steel construction (Standard)
❑
316
Type 316 Stainless Steel construction (Optional)
OPTIONS:
❑
MLS-300
Position indicator switch pack
(8" (203) dia. minimum size required)
QUALIFICATIONS:
• UL 555 & CAN/ULC-S112 CLASSIFIED DYNAMIC FIRE
DAMPER 1 1/2 hr. Label (File # R9492).
• Meets NFPA 80, 90A and 101 as well as IBC and NBC
(Canada) Building Code requirements.
• California State Fire Marshal: Fire Damper Listing No.
3225-0935:0101.
• Maximum velocity: 2000 fpm @ 4" w.g. (10 m/s @ 1 kPa).
Minimum
Maximum
6" (152) dia.
24" (610) dia.
Wall Thickness
Min. Sleeve Length
4 to 8 (102 to 203)
16 (406)
10 to 12 (254 to 305)
20 (508)
14 to 16 (356 to 406)
24 (610)
SCHEDULE TYPE:
PROJECT:
ENGINEER:
CONTRACTOR:
DATE
B SERIES
SUPERSEDES DRAWING NO.
4 - 28 - 14
1200
11 - 28 - 11
1290F-SS-1
DYNAMIC STAINLESS STEEL ROUND FIRE DAMPER
1 1/2 HR. LABEL • VERT. OR HORIZ.
FOR USE IN DYNAMIC OR STATIC SYSTEMS
MODEL: 1290F-SS
Nailor Industries Inc. reserves the right to change any information concerning product or pricing without notice.
For installation instructions, see IOM-1290FINST.
Dimensions are in inches (mm).
CCW
TO
OPEN
(Retaining Plates not shown)
