ISO 9001 : 2008

CERTIFIED

MSFD-GB-21C1-A-R

Type : Motorized Fire Smoke Damper
Fire Rating : 21 Series-1½ hour.
Leakage Rating : Class – I
Blade Type : 3V Single Skin; A : Parallel Operation
Construction :Galvanized Steel (GI)

 

MSFD B-21 Series is a high performance UL 555 / 555S Classified combination of fire and smoke damper with 1½hr. fire rating , installed vertically or horizontally (with blades running horizontally) and is rated for airflow and leakage Class – I leakage in either direction.

UL- 555/555S Test Ratings

Fire Rating : 1½ hrs.

Leakge Rating : Class – I

Max Velocity : 2000 fpm

Operating Temperature : 250°C (482 °F) for 1 hr* (HKFSD), 250°C (482 °F) for 2 hr* (HKFSD)

Max Operating Pressure: 4 in. w.g (1000 pa)

Standard Construction

Frame

16 gauge (1.4 mm – 1.7 mm) thick galvanized steel.

Blades

Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm – 1.7 mm) thick galvanized steel.

Blade Seals

Silicon rubber blade seals.

Jamb Seals

Stainless steel.

Jack Shaft

½” x ½” (12 mm) Galvanized steel square shaft.

Thermal Response Device (TRD)

165°F (74°C).

Actuator

Honeywell, Belimo, Seimens (24V AC, 120V AC, 230V AC)

Sleeve

Minimum 0.9 mm, single section is field or factory installed.
Multiple section is factory installed.
Sleeve thickness as per NFPA table 3-4.6.3.

Optional Fittings

Retaining Angles

1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm).

Limit Switches

For BMS open / close indication.

Indicator

Externally mounted open, close visible Indicator.

Push Button

For manual reset of damper.

Transitions (R)

Neck adapter for round duct connections.

Junction Box

Model : MSFD-GB-21C1 -A/R UL 555/555S Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.

Actuator location standard: Left side from rear view
(Jack shaft view)

 

Note :
FC : Fail Close in the event of Fire
FO : Fail Open in the event of Fire

 

* The temperature ratings are for Honeywell 20 Nm actuators with thermal enclosures.

 

Optional Construction (UL Certification N/A)

Frame : Stainless Steel 16 gauge (304/316L)

Blade : Stainless Steel 16 gauge (304/316L)

Request for Quotation

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