Application Data OFSD-212, Sleeve Information

Application Data

OFSD-212

Actuator Space Envelopes

The drawing below and corresponding table show the minimum dimensions required for internal actuator mounting on OFSD-212s. The standard mounting locations provide enough space for the mounting of actuators and controls plus allowing space for a grille and duct connection (see Sleeve Length below).

Actuator Space	Honeywell

Factory supplied thermal blanket around sleeve

Envelopes	ML-4XXX series	MS4120 series
	MS4XXX series
'X' Dimension	5.88 in. (149mm)	5.88 in. (149mm)
Minimum Width	12 in. (305mm)	12 in. (305mm)

Minimum Height	12 in. (305mm)	12 in. (305mm)

Sleeve Information

‘Sleeve Length’ = Depth of Grille (or Register)

+X (Actuator: see table above)

+5 in. [127mm] (Damper Width)

+1.25 in. [31.8mm] (for duct connection)

(round up to nearest length: 14 in., 16 in., 18 in., or 20 in. [356, 406, 457, 508mm])

Grille (Supplied by others)

Fire rated barrier

X
7	1 "	5 in.
7	⁄2	5 in.
Max.
A

Sleeve Length

Combination Fire Smoke Damper

‘Sleeve Gauge’ = 16 Ga. or 20 Ga. (1.5mm or 1mm)

Wall Opening Sizing

To accommodate for sleeve and thermal blanket thickness,

the wall opening must be oversized by 3⁄8 in. (9.5mm) asWall shown. For example, if the nominal damper size required

is 18 in. x 14 in. (457mm x 356mm), the wall opening size needs to be 18 3⁄8 in. x 14 3⁄8 in. (467mm x 365mm). The damper itself is undersized 1⁄4 in. (6mm) on each dimension for an actual damper size of 17 3⁄4 in. x 13 3⁄4 in. (451mm x 349mm). This is also the inside dimensions of the sleeve (for grille considerations).

Fire Smoke Damper

With Sleeve And

Thermal Blanket

Nominal

Damper

Height + 3/8 in.

Nominal Damper

Width + 3/8 in.

Specifications

Combination Fire Smoke Dampers meeting the following specifications shall be furnished and installed where shown on plans and/or as described in schedules. Dampers shall meet the requirements of NFPA 80, 90A, 92A, 92B, 101 & 105 and further shall be tested, rated and labeled in accordance with the latest edition of UL Standards 555 and 555S. Dampers shall have a UL555 fire rating of 1½ hours and be of low leakage design qualified to UL 555S Leakage Class II.

Each damper /actuator combination shall have a UL555S elevated temperature rating of 250°F (121°C) minimum and shall be operational and dynamic rated to operate at maximum design air flow at its installed location. Each damper shall be supplied with an appropriate actuator installed by the damper manufacturer at the time of damper fabrication. Damper actuator shall be (specifier select one of the following) electric type for 120 (24 or 230) Volt operation.

Damper blades shall be 16 ga. (1.5mm) galvanized steel 3V type with three longitudinal grooves for reinforcement. Damper frame shall be galvanized steel formed into a structural hat channel shape with reinforced corners. Bearings shall be sintered bronze sleeve type rotating in extruded holes in the damper frame. Blade edge seals shall be silicone rubber designed to inflate and provide a tighter seal against leakage as pressure on either side of the damper increases.

Jamb seals shall be stainless steel compression type. Blades shall be completely symmetrical relative to their axle pivot point, presenting identical resistance to airflow in either direction or pressure on either side of the damper. Each damper shall be supplied with a factory mounted sleeve; sleeve shall be wrapped with UL approved thermal barrier material.

The Damper Manufacturer's submittal data shall certify all air performance pressure drop data is licensed in accordance with the AMCA Certified Ratings Program for Test Figures 5.2, 5.3, and 5.5. Damper air performance data shall be developed in accordance with the latest edition of AMCA Standard 500-D. Dampers shall be labeled with the AMCA Air Performance Seal.

Damper must be rated for mounting vertically (with blades running horizontal) or horizontally and be UL 555S rated for leakage and airflow in either direction through the damper. Each damper shall be supplied with a 165°F (74°C) RRL.

The basis of design is Greenheck Model OFSD-212.

OFSD-212 specifications

The Greenheck Fan OFSD-212 is a high-performance, factory-built smoke and fire damper designed to provide dependable fire protection for commercial and industrial settings. Built with rigorous safety standards in mind, the OFSD-212 is engineered to ensure the containment of smoke and fire, thereby minimizing the risk of damage and injury during critical situations.

One of the main features of the OFSD-212 is its robust construction. The damper is made from high-quality materials that can withstand extreme temperatures, which is vital for maintaining its integrity during a fire scenario. The frame is constructed from galvanized steel, providing durability and resistance against corrosion, while the blades are designed to close tightly to prevent smoke from passing through.

In terms of technology, the OFSD-212 incorporates advanced control mechanisms. It comes equipped with an electric actuator that ensures rapid closure of the damper when triggered by a fire alarm system. This feature allows for quick response times, which is crucial in limiting the spread of smoke and toxic gases within a building. Additionally, the actuator can be integrated with various fire alarm systems, providing flexibility in installations.

Another noteworthy characteristic of the OFSD-212 is its ease of installation and maintenance. The damper is designed with user-friendly features, allowing for straightforward installation in new construction or as a retrofit in existing facilities. With removable access panels, maintenance personnel can easily inspect and service the damper, ensuring it remains in optimal working condition.

The OFSD-212 is also designed with energy efficiency in mind. Its streamlined design limits airflow leakage, which not only enhances fire safety but also contributes to overall energy savings for the building. This energy efficiency aligns with modern building codes and standards, making it an excellent choice for developers and facility managers looking to create compliant and sustainable spaces.

In summary, the Greenheck Fan OFSD-212 is a notable solution for fire and smoke containment. Its robust construction, advanced technology, ease of installation, and energy efficiency make it a reliable choice for any commercial or industrial environment seeking to enhance safety and compliance.