These instructions apply to 1
1
⁄
2
and 3 hour rated fire
dampers mounted in: 1) masonry, block, or stud
walls (blades must be horizontal) and 2) concrete
floors. Specific requirements in these instructions are
mandatory. Dampers must be installed in accordance
with these instructions to meet the requirements
of UL 555.
Note:
Fire dampers are manufactured and labeled for
either vertical or horizontal installation. The dampers
must be installed in accordance with labeling.
Receiving and Handling
Upon receiving dampers, check for both obvious
and hidden damage. If damage is found, record all
necessary information on the bill of lading and file
a claim with the final carrier. Check to be sure that
all parts of the shipment, including accessories, are
accounted for.
Dampers must be kept dry and clean. Indoor storage
and protection from dirt, dust, and the weather is
highly recommended. Do not store at temperatures in
excess of 100°F (38°C).
SAFETY WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, injury
or death. Read the installation, operating, and
maintenance instructions thoroughly before installing
or servicing this equipment.
Table of Contents
General Information . . . . . . . . . . . . . . . . . . 2
Pre-Installation Guidelines . . . . . . . . . . . . . . . 2
Preparation of Openings . . . . . . . . . . . . . . . . 3
Clearances Required Between Damper Sleeves & Wall/
Floor Openings. . . . . . . . . . . . . . . . . . . . . 4
Installing Multiple Section Assemblies. . . . . . . . . 4
Maximum Assembly Tables . . . . . . . . . . . . . . 5
Sleeve Requirements . . . . . . . . . . . . . . . . . 5
Securing the Damper/Sleeve Assembly to Wall/Floor
Openings . . . . . . . . . . . . . . . . . . . . . . . . 6
Duct to Sleeve Connection . . . . . . . . . . . . . . 9
Damper Commissioning and Periodic Testing. . . . .11
Damper Maintenance . . . . . . . . . . . . . . . . .11
Damper Troubleshooting. . . . . . . . . . . . . . . .11
®
Curtain Fire Dampers
1
®
Document 481324
Curtain Fire Damper
DFD, DFD-150X, FD, FD-150X, SSDFD, SSFD,
and KFD series
1
1
⁄
2
and 3 Hour Curtain Fire Dampers
Installation, Operation and Maintenance Manual
Please read and save these instructions for future reference. Read carefully before attempting to assemble, install,
operate or maintain the product described. Protect yourself and others by observing all safety information. Failure
to comply with these instructions will result in voiding of the product warranty and may result in personal injury
and/or property damage.
