Greenheck SSDFD-350 User Manual

Model SSDFD-350

Stainless Steel
Closure Spring

Fusible Link (replaceable)
165ºF

[74ºC]Standard (212º

[100ºC]available)

HORIZONTAL MOUNT

“K” side

)

Dynamic Rated Fire Dampers

3 Hour Fire Resistance Rating

APPLICATION

Model SSDFD-350 is approved for use in walls, floors and
partitions with fire resistance ratings of 3 hours or more.
This model carries a 3 hour UL fire damper label. UL 555
classifies dynamic rated fire dampers for use in HVAC
systems that are operational in the event of fire .

RATINGS

UL555 Fire Resistance Rating
Fire Rating: 3 hours

Model SSDFD-350 meets the requirements for fire dampers
established by:

National Fire Protection Association

(NFPA Standards 80, 90A & 101)

Underwriters Laboratories Standard 555 (Listing #R-13317)
IBC International Building Codes (UBC Standard 43-7)
New York City (MEA listing #260-91-M)
California State Fire Marshall

(Listing #3225-981:107 for use in walls)

Dynamic closure rating
Maximum Velocity: 2000 fpm (10.2 m/s) vertical mount
Maximum Pressure: 4 in. wg (1 kPa)

CONSTRUCTION

“UL CLASSIFIED (see complete marking on product)”
“UL CLASSIFIED to Canadian safety standards (see
complete marking on product)”

Standard 555 (Listing #R13317)

Stainless steel (in gauges required by UL listing R-13317)

INSTALLATION

All fire damper installations require the use of sleeves,
angles and methods described in Greenheck Fire Damper

W*

Installation Instructions #452763, included with every
damper shipment. Sleeves can be field fabricated or factory
furnished as a complete damper/sleeve assembly. See
Factory Sleeve Option below for details.

H*

FEATURES

• Stainless steel closure springs

• Fusible links (165ºF (74ºC) standard, 212ºF (100ºC) and
286ºF (141ºC) available.

• Vertical mount available

11

3

16

"

OPTIONAL FEATURES

• Sealed transitions and sleeves

(94mm)

/

• Security bars

• One piece retaining angles (POC)

• Transitions (B, B2, C, CO, CR, R)

FACTORY SLEEVE OPTION

SSDFD-350 Fire Dampers are available in factory furnished sleeves. Sleeves are
stainless steel and are available in 10 thru 20 ga. (1mm - 3.5mm) thicknesses and
lengths up to 36 in. (914mm).

“K” dimension specifies location of damper within the sleeve. Minimum is 4 in.
(102mm), maximum is “L” less 4 in. (102mm), which allows for mounting angle
installation and duct connection at each end of sleeve. If “K” dimension is not
specified, it will be provided as one half of “L” dimension (damper centered in sleeve).

Note: If using access doors, the door should be installed on the "K" side of the damper.

VERTICAL

These dimensions are furnished

*

approximately 1/4 in. (6mm) undersize

Sleeve

Damper

H*

K

Damper

Location

CL Damper Frame

Overall Sleeve Length

L

W*

When sealed option is selected, B transitions
will need to be field sealed in the area where
duct to sleeve connection is made.

Type B with sleeve

Type B corner profile

Installation instructions available at
www.greenheck.com

SSDFD-350 Types A &B

HORZONTAL MOUNT

VERTICAL MOUNT

varies

varies

K dim.

varies

varies

sleeve length

sleeve length

1 1/2 in.

1 1/2 in.

1 1/2 in.

1 1/2 in.

K dim.

The following chart shows minimum and maximum damper section
size. Dimensions are in inches (mm).

Size Limitations

Inches (mm)

Single Section

Vertical

(102 x 102)

Maximum Single Section Dimensions

Type A

Type A Type B

Minimum Maximum Minimum Maximum

4 x 4

30 x 30

(762 x 762)

4 x 3

(102 x 76)

30 x 26

(762 x 660)

Overall Damper Dimensions

P

H*

W*

Type A Type B

*O

H*

W*

Type B

30 in.
(762mm)
max.

30 in.
(762mm)
max.

VERTICAL MOUNT

1 1/2 in.

K dim.

varies

sleeve length

varies

Type B2 side view

30 in. (762mm)
max.

26 in. (660mm)
max.

1 1/2 in.

O*

H*

W*

H* O*

3 (76) 5 (127)

4 (102) 6 (152)

5 (127) 7 (178)

6 (152) 8 (203)

7 (178) 9 (229)

8 (203) 10 (254)

9 (229) 11 (279)

10 (254) 12 (305)

11 (279) 13 (330)

12 (305) 14 (356)

13 (330) 15 (381)

14 (356) 16 (406)

15 (381) 18 (457)

16 (406) 19 (483)

17 (432) 20 (508)

18 (457) 21 (533)

19 (483) 22 (559)

20 (508) 23 (584)

21 (533) 24 (610)

22 (559) 26 (660)

23 (584) 27 (686)

24 (610) 28 (711)

25 (635) 29 (737)

26 (660) 30 (762)

27 (686) 31 (787)

28 (711) 32 (813)

29 (737) 33 (838)

30 (762) 34 (864)

Type B2

*Dimensions given in inches (mm). These dimensions
are furnished approximately 1/4 in. (6mm) undersize.