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Greenheck Fan DFD-155 User Manual

Model dfd-155, Fire dampers, Dynamic rated

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Model DFD-155

Dynamic Rated

FIRE DAMPERS

100% Free Area - Sealed for High Pressure Systems

1

1

2

Hour Fire Resistance Rating

Application

Model DFD-155 is approved for use in walls, floors and
partitions with fire resistance ratings less than 3 hours.
This model carries a 1

1

2

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: 1 1/2 hours
Dynamic closure rating
Maximum Velocity: 4000 fpm (20.3 m/s) vertical mount only,

up to 24 in. x 24 in. (610mm x 610mm)

2000 fpm (10.2 m/s) vertical or horizontal

mount, on all sizes.

Maximum Pressure: 4 in wg (1 kPa)

Construction

Galvanized 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
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.

Features

• Stainless steel closure springs
• Fusible links - 165ºF (74ºC) standard, 212ºF (100ºC)

and 286ºF (141ºC) available

• Horizontal or vertical mount available
• Sealed for use in high pressure systems

Optional Features

• Security bars
• One piece retaining angle (POC)
• Tranhhsitions (C, CO, CR, & R)

Factory Sleeve Option

DFD-155 Fire Dampers are available in factory furnished sleeves. Sleeves are
galvanized 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).

Horizontally mounted dampers must be installed with the “K” dimension on the
bottom side.

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

H*

K

Damper

Location

L

Overall Sleeve Length

W*

CL Damper Frame

Sleeve

Damper

D* + 2 in.

O*

D*

TYPE CR

TYPE CO

W* + 2 in.

6 in.

Max.

W*

H*

W* + 2 in.

O*

W*

H*

TYPE C

6 in.

Max.

O*

6 in

Max.

2

1

/

2

in.

2

1

/

2

in.

2

1

/

2

in.

Model DFD-155 meets the requirements for fire dampers

established by:
National Fire Protection Association

(NFPA Standards 80, 90A & 101)
BOCA National Building Codes
IBC International Building Codes
ICBO Uniform Building Codes (UBC Standard 43-7)
SBCCI Standard Building Codes
New York City (MEA listing #260-91-M)

California State Fire Marshal (Listing #3225-981:102)

“UL CLASSIFIED (see complete marking on product)”

“UL CLASSIFIED to Canadian safety standards (see

complete marking on product)”

Standard 555 (Listing #R13317)

*

These dimensions are furnished approximately 1/4in. (6mm) undersize, except

round and oval dimensions which are 1/8 in. (3mm) undersize. (Add sleeve

thickness for overall sleeved damper dimension)

3

11/16"

W*

H*

Stainless Steel

Closure Spring

Fusible Link (replaceable)
165ºF [74ºC]Standard (212º [100ºC]available)

HORIZONTAL MOUNT

VERTICAL

“K” side

)

(94mm)