Ceiling Radiation Damper - 1 Hour - Butterfly Style Blade - CFD-521

1 Hour - Ceiling Radiation Damper
Butterfly Style Blade

The CFD-521 ceiling radiation damper employs butterfly style blades for point-of-origin control of radiant heat in HVAC systems. The CFD-521 is installed horizontally in the ceiling membrane of combustible floor-ceiling or roof-ceiling assemblies with fire resistance ratings up to and including 1 hour.

Specification

Standard Construction
Frame: 22 ga. (1) galvanized steel with integral outlet box.
Blades: 22 ga. (0.85) galvanized steel - butterfly. Insulated with ceramic refractory material for dampers larger than 114 in² (735 cm²).
Transition: Round, with 2" (51) deep collar, located on W side of outlet box.
Plaster Ground: 5/8" (16) deep x 1" (25) wide.
Closure Device: Fusible Link.
Fire Closure Temperature: 165^oF (75^oC).
Minimum Size: 4" x 6" (102 x 152)
Maximum Size:
Square: 18" x 18" (457 x 457)
Rectangular: 24" (610) W or 20" (508) H with a maximum area of 324 in² (2090 cm²)

Ratings
UL 555C Fire Resistance Rating: 1 hour for installation in floor designs L-521, L-528, L-546, L-558, L-562, L-574, L-576, L-581, L-583, L-585, M-509, M-540 and in roof/ceiling designs P-522, P-533, P-538, P-545, P-547, P-579 and P-580.
UL 555C Listing: R14603
CSFM Listing: 3226-0368:104
Warnock Hersey Listing #: WHI-495-PSH-0177, -0178
Meets NFPA Standards: 90A and 101
Meets Building Code Standards: IBC, NBC, NFPA, SBC and UBC

Technical specification

Unique ref.Ceiling-Radiation-Damper-1-Hour-Butterfly-Style-Blade-CFD-521
Product familyHVAC
Product groupCeiling Radiation Dampers
TypeObject (single object)
Date of publishing2024-07-16
Edition number1

Links

Product urlhttps://www.pottorff.com/product/details/59

Classification

BIMobject CategoryHVAC - Ductwork
Uniclass 2015 CodePr_65_65_24
Uniclass 2015 DescriptionDuct dampers
CSI MasterFormat 2014 Code23 33 13
CSI MasterFormat 2014 TitleDampers
OmniClass Number23-33 29 19
OmniClass TitleDampers

Region availability

North America
Anguilla
Antigua and Barbuda
Aruba
Barbados
Belize
Bermuda
British Virgin Islands
Canada
Caribbean Netherlands
Cayman Islands
Collectivity of Saint Martin
Costa Rica
Cuba
Curaçao
Dominica
Dominican Republic
El Salvador
Greenland
Grenada
Guadeloupe
Guatemala
Haiti
Honduras
Jamaica
Martinique
Mexico
Montserrat
Nicaragua
Panama
Puerto Rico
Saint Kitts and Nevis
Saint Lucia
Saint Pierre and Miquelon
Saint Vincent and the Grenadines
Saint-Barthélemy
Sint Maarten
The Bahamas
Trinidad and Tobago
Turks and Caicos Islands
U.S. Virgin Islands
United States