Greenheck Fan SMD-301V Benutzerhandbuch

Model SMD-301V meets the requirements for smoke 

dampers established by:
National Fire Protection Association 

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

Application

Model SMD-301V is a vertical blade low leakage rated smoke 

damper. High strength airfoil blades insure lowest resistance to 

airflow in HVAC systems with velocities to 4000 fpm (20.3m/s) and 

4 in. wg (1.0 kPa).

UL555S Leakage Rating

 

Leakage Class:  

I 

Operational Rating 

 

Maximum Velocity: 

2000 fpm (20.3 m/s) up to 

 

 

100 in. x 32 in. H 

 

 

(2540mm x 813mm) or 

 

 

4000 fpm  (20.3 m/s) up to 

 

 

50 in. x 32 in. (1270mm x 813mm) 

 

Maximum Pressure:  

4 in. wg (1 kPa) 

 Maximum Temperature: 

350ºF (177ºC)

Standard Construction

 

Frame:  

5 in. x 1 in. (127mm x 25mm) 

 

 

galvanized steel hat channel with 

 

 

reinforced corners. A low profile 

 

 

head and sill are used on sizes 

 

 

less than 17 in. (432mm) high to 

 

 

maximize free area and 

 

 

performance. 

 

Blades:  

Double skin airfoil shape of 

 

 

galvanized steel with full length 

 

 

structural reinforcement. 14 ga. 

 

 

(2 mm) equivalent thickness. 

 

Seals: 

Extruded silicone rubber blade 

 

 

seals.  Flexible stainless steel 

 

 

jamb seals. 

 

Linkage: 

Concealed in jamb. 

 

Axles: 

1

/

2

 in. (13mm) dia. plated steel. 

 

Bearings: 

304 stainless steel

Size Limitations:

 

Minimum Size: 

6 in. W x 8 in. H 

 

 

(152mm  W x 203mm H) 

 

Maximum Size: 

 

Single Section: 

50 in. W x 32 in. H 

 

 

(1270mm W x 813mm H) 

 

Multiple Section: 

100 in. W x 32 in. H 

 

 

(2540mm W x 813mm H)

Optional Features:

• OCI (Open closed indication switches)
•  Electric or pneumatic actuators to accomplish smoke 

management and system functions.

• Transitions (R, C, O)
• POC retaining angles
• Momentary Switch
• Sealed transitions and sleeves

Model SMD-301V

Smoke Dampers

*W&H dimensions furnished approximately 

1

/

4

 in. (6mm) undersize.

“UL CLASSIFIED (see complete marking on 

product)”

“UL CLASSIFIED to Canadian safety standards 

(see complete marking on product)”

 

Standard 555S (Listing #R13317)

W*

H*

Installation instructions available at www.greenheck.com