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TRUE ROUND FIRE DAMPERS
MODEL: 1290F
PERFORMANCE DATA:
PRESSURE DROP (damper fully open)
.70
.60
.50
.40
.30
.25
.20
.15
.10
.09
.08
.07
.06
.05
.04
E
.03
.02
.015
.01
1
2
3
0
0
0
0
0
0
Air Volume in CFM (through face area)
Tested per AMCA standard 500-D, Fig. 5.3.
SUGGESTED SPECIFICATION:
MODEL: 1290F
Provide and install, as shown on plans and/or schedules True Round Fire Dampers, as manufactured by Nailor Industries,
meeting or exceeding the following criteria: Frame/integral sleeve shall be roll-formed from 20 ga. (1.0) galvanized steel,
beaded for structural strength and grooved to accept 20 ga. (1.0) galvanized steel retaining plate. Required sleeve length shall
be field verified by contractor. Each damper shall be complete with retaining plate and 20 ga. (1.0) galvanized steel damper
plate, supplied by the damper manufacturer to ensure proper fit and installation. Blade shall be of two 20 ga. (1.0) galvanized
steel pieces laminated together with an equivalent thickness of 14 ga. (2.0). Blades axles shall be 1/2" (13) dia. plated steel
double bolted to blade. Hex or square friction-fit or press-fit axles are not acceptable. Bearings shall be self lubricating oilite
bronze type.
Fire dampers shall meet the requirements of NFPA 80, 90A & 101, and shall be manufactured, tested and labeled in accordance
with UL 555 Safety Standard for Fire Dampers – Sixth Edition, June 1999, including Dynamic Closure Test. Dampers shall be
classified for dynamic closure against an airflow velocity of 2000 fpm (10.16 m/s) at 4" w.g. (1 kPa) static pressure differential
(across closed damper).
Each fire damper shall bear a UL 1 1/2 hour fire resistance rating label, in addition to label verifying the airflow and closure
pressure ratings as established by the Dynamic Closure Test. Each fire damper shall also be marked with the words "For use
in dynamic systems". Dampers marked "For use in static systems only" are not acceptable.
Each fire damper shall be complete with a (specifier select one) 165°F (74°C) or 212°F (100°C) UL listed fusible link that will
cause the damper to close and lock in closed position by means of an over-center/knee lock linkage for assured closure. Each
fire damper shall be supplied with a manual quadrant for setting and locking of blades in desired position. Contractor shall
provide and install an access door at each fire damper, of appropriate size to allow for inspection, testing and fusible link
replacement. Information submitted for approval shall include independent pressure drop data and confirmation of UL
qualifications in addition to manufacturer's installation instructions. Each shipment of fire dampers shall include same
installation instructions. Standard of acceptance: Nailor Industries Model 1290F.
Previous View
E22
E22
4
5
7
1
1
2
3
4
5
0
0
0
0
5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
HOW TO SPECIFY
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Imperial figures shown.
To convert to SI
(metric) system:
Multiply:
CFM x .4719 = liters
per second
inches w.g. x .2486
= kilopascals
fpm x .00508 = meters
per second
cfm per sq. ft. x 5.08 =
liters/second per
sq. meter.
6
7
0
0
0
0
0
0
Contents
Dimensions
AIR LEAKAGE (damper closed)
7
6
5
4
3
2.5
2
1.5
1.0
.9
.8
.7
.6
.5
.4
.3
.2
.15
.1
.2
.3
.4
.5
.7
1
1.5
Air Leakage in CFM/ sq. ft. (through face area)
Tested per AMCA standard 500-D, Fig. 5.5.
Specification Text File
Performance
Specification
Revised September 7, 2004
2
3
4
5
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