Greenheck Fan SMD-302M Manual De Usuario

Model SMD-302M 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-302M is a leakage rated modulating smoke damper 

with class II leakage. The SMD-302M serves the function of both 

a control damper and smoke damper. High strength airfoil blades 

insure lowest resistance to airflow in HVAC systems with velocities 

to 2000 fpm (10.2m/s) and 4 in. wg (1 kPa) Model SMD-302M may 

be installed vertically (with blades running horizontal) or horizontally 

and is rated for airflow and leakage in either direction.

UL 555S Leakage Rating

 

Leakage Class:  

II 

Operational Rating 

 

Maximum Velocity: 

2000 fpm (10.2m/s) 

 

Maximum Pressure:  

4 in. wg (1 kPa) 

 

Maximum Temperature: 250ºF (121ºC)

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: 

Bronze sleeve type.

SIze LIMITATIONS:

 

Minimum Size: 

8 in. W x 6 in. H 

 

 

(203mm W x 152mm H) 

 

Maximum Size:  

 

Single Section: 

32 in. W x 50 in. H 

 

 

(813mm W x 1270mm H) 

 

Multiple Section: 

128 in. W x 100 in. H 

 

 

(3251mm W x 2540mm H)

Optional Features:

• Galvanized steel sleeves.
• Stainless steel bearings
• 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
• Smoke detectors
• Sealed transitions and sleeves

Model SMd-302M

Smoke dampers

*W&H dimensions furnished approximately 1/4 in. (6mm) undersize.

Right hand drive is shown. Left hand drive is available upon request.

Damper also may be rotated 180° in the field for opposite side drive.

(Add sleeve thickness for overall sleeved damper dimension)

H*

W*

LH

RH

“UL CLASSIFIed (see complete marking on 

product)”

“UL CLASSIFIed to Canadian safety standards 

(see complete marking on product)”

 

Standard 555S (Listing #R13317)

Greenheck Fan Corporation certifies that the 

model SMD-302M shown herein is licensed 

to bear the AMCA Seal. The ratings shown 

are based on tests and procedures performed 

in accordance with AMCA Publication 511 

and comply with the requirements of the 

AMCA Certified Ratings Programs. The 

AMCA Certified Ratings Seal applies to air 

performance ratings only.

R

Installation instructions available at www.greenheck.com