Greenheck DFD-M350 User Manual

APPLICATION

Model DFD-M350 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 .

CONSTRUCTION

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

Model DFD-M350

Dynamic Rated Fire Dampers

3 Hour Fire Resistance Rating

Model DFD-M350 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

INSTALLATION

All fire damper installations require the use of sleeves, angles and methods described in Greenheck Fire Damper Installation Instructions #464089, included with every damper shipment. Sleeves can be field fabricated or factory furnished

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

Standard 555 (Listing #R13317)

as a complete damper/sleeve assembly. See Factory Sleeve Option below for details.

94mm

FACTORY SLEEVE OPTION

DFD-350 Fire Dampers are available in factory furnished sleeves. Sleeves are galvanized steel and are available in 1.0mm - 1.5mm thicknesses and lengths up to 914mm.

“K” dimension specifies location of damper within the sleeve. Minimum is 102mm, maximum is “L” less 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).

TYPE A TYPE B

Features:

• Stainless steel closure springs

• Fusible links (74°C standard, 100°C

available)

• Vertical or horizontal mount

• Grille tabs

These dimensions are furnished approximately 6mm

undersize.

Sleeve

Damper

Type B with sleeve

Type B corner proﬁle

Installation instructions available at www.greenheck.com

Damper

Location

CL Damper Frame

Overall Sleeve Length

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

DFD-M350 Types A&B

Three hour rated dampers are normally furnished in single section sizes only. Multi-section assembly is allowable with some limitations. Consult Greenheck for specific information.

SIZE LIMITATIONS TYPE A

Vertical or Horizontal

Single Section

Minimum 102mm x 102mm

Maximum 914mm x 914mm

SIZE LIMITATIONS TYPE B

Vertical or Horizontal

Single Section

Minimum 102mm x 76mm

Maximum 914mm x 813mm

Maximum Single Section Dimensions

Type A

914mm max.

Type B

914mm max.

813mm max.

Overall Damper Dimensions

H* O*

76 127

102 152

127 178

152 203

178 229

Type A

Type B

203 254

229 279

254 305

279 330

305 356

330 381

356 406

381 457

406 483

432 508

457 533

483 559

508 584

533 610

559 660

584 686

610 711

635 737

660 762

686 787

711 813

737 838

762 864

787 889

813 915

DFD-M350 Type R

Sizing and Assembly Data

Dampers larger than maximum single section size are supplied as a factory assembly of two or more sections of equal size.

Transition is centered on damper frame (or frame assembly for multiple section dampers).

SIZE LIMITATIONS

Vertical or Horizontal

Minimum 76mm diameter

Maximum 864mm diameter

GREENHECK

P.O. BOX 410 SCHOFIELD, WISCONSIN 54476-0410

PH. 715-359-6171

www.greenheck.com

These dimensions are furnished

approximately 6mm undersize. (Dimensions in mm)

76mm min.

864mm max.

DFD-M350 Rev. 5 Sept 2009