Greenheck Fan FSD-312 User Manual

Model FSD-312

H*

W*

R

APPLICATION

Model FSD-312 is a high performance combination fire smoke
damper with class II leakage. High strength airfoil blades ensure the
lowest resistance to airflow in HVAC systems with velocities to 3000
fpm (15.2 m/s) and pressures to 4 in. wg (1 kPa) Model FSD-312 may
be installed vertically (with blades running horizontal) or horizontally
and is rated for airflow and leakage in either direction.

Combination Fire Smoke Dampers

RATINGS

UL 555 Fire Resistance Rating:
Fire Rating: 1½ hours
Dynamic Closure Rating: Actual ratings are size dependent
Max. Velocity: up to 3000 fpm (15.2 m/s)
Max. Pressure: 4 in. wg (1 kPa)

UL555S Leakage Rating:
Leakage Class: II
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:
Bearings: Bronze sleeve type.

1

⁄2 in. (13mm) dia. plated steel.

Steel Airfoil Blades

UL 555S Leakage Class II

UL555 11⁄2 Hour Fire Resistance Rating

Model FSD-312 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)

Greenheck Fan Corporation certifies that the
model FSD-312 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.

SIZE LIMITATIONS:

Minimum Size:
(203 mm W x 152mm H)
Maximum Size:
Single Section: 32 in. W x 50 in. H
(813mm W x 1270mm H)
Multiple Section: 96 in. W x 50 in. H
(2435mm W x 1270mm H)
Vertical Only: 128 in. W x 100 in. H
(3251mm W x 2540mm 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

8 in. W x 6 in. H

LH

RH

*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.

Installation instructions available at www.greenheck.com

Pressure Drop Data FSD-312

5D 6D

5D 6D

5D

D

4 (W) (H)

3.14

5D 6D

5D

D

4 (W) (H

)

3.14

This pressure drop testing was conducted in accordance with AMCA Standard 500-D using the three configurations shown. All

data has been corrected to represent standard air at a density of .075 lb/ft

Actual pressure drop found in any HVAC system is a combination of many factors. This pressure drop information along with an

analysis of other system influences should be used to estimate actual pressure losses for a damper installed in a given HVAC
system.

AMCA Test Figures

Figure 5.3 Illustrates a fully ducted damper. This configuration has the lowest pressure drop of the three test configurations

because entrance and exit losses are minimized by straight duct runs upstream and downstream of the damper.

Figure 5.2 Illustrates a ducted damper exhausting air into an open area. This configuration has a lower pressure drop than

Figure 5.5 because entrance losses are minimized by a straight duct run upstream of the damper.

Figure 5.5 Illustrates a plenum mounted damper. This configuration has the highest pressure drop because of extremely high

entrance and exit losses due to the sudden changes of area in the system.

3

(1.201 kg/m3).

Figure 5.3

Figure 5.2

Figure 5.5

12x12

48x12

24x24

36x36

12x48

R

AMCA 5.2 Pressure Drop FSD-312

5D 6D

5D

D

4 (W) (H)

3.14

Ve locity

(fpm)

Pressure Drop

(in. wg)

Ve locity

(fpm)

Pressure Drop

(in. wg)

Velocity

(fpm)

Pressure Drop

(in. wg)

Ve locity

(fpm)

Pressure Drop

(in. wg)

Ve locity

(fpm)

Pressure Drop

(in. wg)

500 0.03 500 0.01 500 0.01 500 0.01 500 0.02
1000 0.12 1000 0.06 1000 0.061000 0.051000 0.08
1500 0.26 1500 0.12 1500 0.121500 0.12 1500 0.18
2000 0.46 2000 0.22 2000 0.222000 0.21 2000 0.33
2500 0.72 2500 0.34 2500 0.342500 0.332500 0.51
3000 1.04 3000 0.49 3000 0.493000 0.483000 0.74
3500 1.41 3500 0.67 3500 0.673500 0.653500 1.00
4000 1.84 4000 0.87 4000 0.884000 0.854000 1.31

12in. X 48 in.

(

305mm x 1219mm) 48 in. x 12 in. (1219mm x 305mm) 24 in. x 24 in. (610mm x 610mm) 36in. x 36 in. (914mm x 914mm) 12 in. x 12 in. (305mm x 305mm)

*

* Sizes are in inches.

Greenheck Fan Corporation certifies that the
model FSD-312 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.