Greenheck Fan DFD-155 دليل المستخدم

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2 /2 in.
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2 /2 in.
Model DFD-155
Dynamic Rated FIRE DAMPERS
100% Free Area - Sealed for High Pressure Systems
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Application 1 ⁄2 Hour Fire Resistance Rating
Model DFD-155 is approved for use in walls, floors and
Model DFD-155 meets the requirements for fire dampers
partitions with fire resistance ratings less than 3 hours.
established by:
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This model carries a 1 ⁄2 hour UL fire damper label. UL
National Fire Protection Association
555 classifies dynamic rated fire dampers for use in HV

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SIIN z g DATA DFD-155 TYPE CR, CO, C, & R Overall Damper Dimensions Dampers larger than maximum single section size are supplied as a factory assembly of two or more sections of equal size. These multi-section damper assemblies may have D*+2 slightly less than 100% free area because of the mullions where damper sections join. Type CR The following charts shows minimum and maximum damper section sizes . Dimensions are in inches (mm in parentheses). O* C, CO, & CR transitions are positioned