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ISO 9001 : 2008
CERTIFIED
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.
Fire Rating : 1½ hrs
Leakage Rating : Class – I
Max Velocity : 2000 fpm
Max Operating Pressure: 4 in. w.g (1000 pa)
Operating Temperature : 250 °F (121 °C) for ½ hr
Operating Temperature :250°C (482 °F) for 1 hr* (HKFSD)
:250°C (482 °F) for 2 hr* (HKFSD)
16 gauge (1.4 mm – 1.7 mm) thick galvanized steel.
Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm – 1.7 mm) thick galvanized steel.
Silicon rubber blade seals.
Stainless steel.
12 mm diameter Galvanized steel shaft.
165°F (74°C).
Honeywell, Belimo, Seimens (24V AC, 120V AC, 230V AC)
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.
1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm).
For BMS open / close indication.
Externally mounted open, close visible Indicator.
For manual reset of damper.
Neck adapter for round duct connections.
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.
Frame : Stainless Steel 16 gauge (304/316L)
Blade : Stainless Steel 16 gauge (304/316L)
