Greenheck Fan FSD-331 Manual De Usuario

APPLICATION

Model FSD-331 is a high performance combination fire smoke damper 

with extremely low leakage. High strength airfoil blades ensure the 

lowest resistance to airflow in HVAC systems with velocities to 2000 

fpm (10.2 m/s) and pressures to 4 in. wg (1 kPa). Model FSD-331 may 

be installed vertically (with blades running horizontal) and is rated for 

airflow and leakage in either direction.

RATINgs

UL 555 Fire Resistance Rating 

 

Fire Rating: 

3

 

hours 

 

Dynamic Closure Rating: Actual ratings are size dependent 

 

Max. Velocity: 

up to 2000 fpm (10.2 m/s) 

 

Max. Pressure: 

4 in. wg (1 kPa)

UL555S Leakage Rating 

 

Leakage Class: 

I 

 

Operational Rating: 

Actual ratings are size dependent 

 

Max. Velocity: 

up to 3000 fpm (15.2m/s) 

 

Max. Pressure: 

4 in. wg (1 kPa) 

 

Maximum Temperature:  350°F (177°C)- depending upon the 

 

 

actuator

sTANdARd CONsTRuCTION

 

Frame:  

5 in. x 1 in. (127mm x 25 mm) 

 

 

galvanized steel hat channel with 

 

 

reinforced corners. A low profile head 

 

 

and sill are used on sizes less than 

 

 

17 in. (432mm) 

 

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. 

 

Closure Device: 

RRL 165°F (74°C) 

 

Axles: 

1

⁄

2

 in. (13mm) dia. plated steel. 

 

Bearings: 

Bronze sleeve type.

sIze LImITATIONs:

 

minimum size: 

8 in. W x 6 in. H 

 

 

(203 mm W x 152mm H) 

 

maximum size (Vertical Only):  

 

Single Section: 

32 in. W x 36 in.H 

 

 

(813mm W x 914mm H) or  

 

 

30 in. W x 48 in. H 

 

 

(762mm x 1219mm) 

 

Multiple Section:

 

120 in. W x 96 in. H 

 

 

(3048mm W x 2438mm H)

OPTIONAL FeATuRes:

• RRL/OCI (Open closed indication switches)

•  165ºF (74°C), 212ºF (100°C), 250ºF (121°C), 350ºF (177°C) RRL's 

available

•  TOR (remote override closure allows damper to perform smoke 

management functions during a fire emergency.)

•  Electric or pneumatic actuators to accomplish smoke management 

and system functions.

• POC retaining angles

• Smoke detectors

• Momentary Switch

• Transitions (R, C, O)

• PRV (pneumatic relief valve)

• Security Bars

• Sealed transitions and sleeves

model Fsd-331

Combination Fire smoke dampers

 

*W&H dimensions furnished approximately 

1

/

4 

in. ( 6 mm) undersize.

(Add sleeve thickness for overall sleeved damper dimension)
Right hand drive is shown. Left hand drive is available upon request.

H*

W*

LH

RH

Model FSD-331 meets the requirements for fire 

dampers, smoke dampers and combination fire 

smoke dampers established by:
National Fire Protection Association 

    NFPA Standards 80, 90A, 92A, 92B, 101 & 105
IBC  International Building Codes
ICBO  uniform Building Codes 
CsFm California state Fire marshal
  Fire Damper Listing (#3225-0981:103)
  Leakage (Smoke) Damper Listing (#3230-0981:104)
New York City (MEA listing #260-91-M)

“uL CLAssIFIed (see complete marking on 

product)”

“uL CLAssIFIed to Canadian safety standards 

(see complete marking on product)”

 

Standard 555 & 555S (Listing #R13317) 

R

Greenheck Fan Corporation certifies that the 

model FSD-331 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.