UL555 Certified Leakage Class I, 1 1/2 hrs high temperature rated fire smoke dampers

UL555 Certified, Airfoil Blade Leakage Class I Fire Smoke Damper – FSD311

UL555 Certified, Leakage Class 1 fire smoke damper with 1 1/2 hrs fire resistance, with airfoil blades. With or without spring return, fasting acting fail-safe electric actuator / motor, with 24 V AC/DC or 230V AC power supply.

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Description

UL555 Certified Airfoil blades Leakage Class 1 Fire Smoke Damperpdf-image

1 1/2 hrs rated, UL555 certified leakage class 1 fire smoke dampers – with or without actuator
Make: Greenheck India
Model: FSD311

UL555 Certified Leakage Class 1 fire smoke damper with 1 1/2 hrs fire resistance
UL555 Certified Leakage Class 1 fire smoke damper with 1 1/2 hrs fire resistance

 

UL555 Certified Fire Smoke Damper model FSD-311 is a high performance combination fire smoke damper with Class I leakage with 1 1/2 hrs fire resistance rating. High strength airfoil blades ensure the lowest resistance to airflow in HVAC systems with velocities to 4000 fpm (20.3 m/s) and pressures to 8 in. wg (2 kPa).

FSD-311 is available with high performance, fast acting spring return electric actuator / motor with fail-safe function and auxiliary switch for position indication. Actuator can be offered with 24V AC / DC or 230V AC power supply option.

 

Model FSD-311 may be installed vertically (with blades running horizontal) or horizontally and is rated for airflow and leakage in either direction.

Model FSD-311 meets the requirements for fire dampers, smoke dampers and combination fire smoke dampers established by:

  • National Fire Protection Association NFPA Standards 80, 90A, 92A, 92B, 101 & 105
  • IBC International Building Codes
  • New York City (MEA listing #260-91-M)
  • CSFM California State Fire Marshal
    • Fire Damper Listing (#3225-0981:103)
    • Leakage (Smoke) Damper Listing (#3230-0981:104)

Key Features:

  • UL 555 Fire Resistance Rating
    • Fire Rating: 11⁄2 hours
  • Dynamic Closure Rating: Actual ratings are size dependent
    • Velocity: Up to 4,000 fpm (20.3 m/s)
    • Pressure: Up to 8 in. wg (2 kPa)
  • UL 555S Leakage Rating
  • Leakage Class: I
    • Operational Rating: Actual ratings are size dependent
    • Velocity: Up to 4,000 fpm (20.3 m/s)
    • Pressure: Up to 8 in. wg (2 kPa)
    • Temperature: Up to 350°F (177°C) – depending upon the actuator
  • Frame Material : Galvanized steel
  • Frame Material Thickness : 16 ga. (1.5mm)
  • Blade Material: Galvanized steel
  • Blade Material Thickness: 14 ga. (2mm) equivalent
  • Blade Type : Airfoil
  • Linkage : Plated steel out of airstream, concealed in jamb
  • Axle Bearings : 304SS
  • Axle Material: Plated steel
  • Blade Seals: Silicone
  • Jamb Seals : 304SS
  • Closure Device : RRL, Optional: RRL/OCI, TOR
  • Closure Temperature: 165°F (74°C)

Typical Ventilation Applications area include:

  • Enclosed / Basement air and smoke ventilation
  • Smoke / Fire Curtain, Zoning
  • Building fire separation

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