5 3/4" (146)
16" (406) STANDARD
NOM. DIA.
- 1/8" (3)
ACTUATOR
DRIVE
SHAFT
INSTALLATION
RETAINING PLATES
INCLUDED
Model 1290F fire damper is ideal for 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 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 is an economical 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 masonry walls or floors.
Features include the industry proven over-center knee lock
design with high torque spring/fusible link closure. The 1290F is
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.
STANDARD CONSTRUCTION:
Frame:
20 ga. (1.0) galvanized steel integral sleeve and
retaining plates.
Blade:
2 x 20 ga. (1.0) galv. steel laminated together.
14 ga. (2.0) equivalent thickness.
Linkage:
Jackshaft to blade.
Bearings:
1/ 2" (13) dia. self-lubricating oilite bronze.
Axles:
1/ 2" (13) dia. plated steel double bolted to blades.
Jackshaft:
1/2" (13) dia. cadmium plated 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.
OPTIONS:
❑
BS
Stainless steel bearings
❑
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-1
DYNAMIC ROUND FIRE DAMPER
1 1/2 HR. LABEL • VERT. OR HORIZ.
FOR USE IN DYNAMIC OR STATIC SYSTEMS
MODEL: 1290F
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)
