Damper Maintenance; Damper Troubleshooting; Installation For Steel Stud Connection Option - Greenheck FD150X Installation, Operation And Maintenance Manual

Damper Maintenance

Dampers shall be maintained, cycled, and tested in intervals as stated in the latest editions of NFPA 90A, 92A,
and UL 864 unless local codes require more frequent inspections.
Dampers do not typically require maintenance as long as they are kept dry and clean. If cleaning is necessary,
use mild detergents or solvents. If lubrication is desired, do not use oil-based lubricants or any other lubricants
that attract contaminant's such as dust.
Damper Trouble Shooting
The following is a cause and correction list for common concerns with the dampers.
Symptom
Damper does not
fully open and/or
fully close
Link separated
Installation for Steel Stud Connection (SSC) Option
These instructions apply to 1
instructions are mandatory. These instructions meet the requirements of UL 555. Installation shall comply with the
requirements of NFPA 90A Standard for the Installation of Air Conditioning and Ventilating Systems. U.L. listings
R13317 and R13743, California State Fire Marshal listings 3225-981:102 and 3225-1241:101, and New York City
BSA/MEA listing 260-91-M as they apply to these dampers.
1. NO ADDITIONAL SLEEVES OR ANGLES ARE REQUIRED
The fire damper extended frame is an approved sleeve and the Steel Stud Connection (SSC) Option allows
fastening of the fire damper sleeve directly to the wall's steel stud framing. Damper frame shall extend a
maximum of 6 in. beyond the wall opening on either side. Maximum size fire damper that may be installed
using this SSC option is 36 in. W x 36 in. H.
2. INSTALLATION
Fire damper with SSC option must be in place before the wall is constructed or it can be installed as the wall
is being constructed. Wall opening is framed around the fire damper before sheet rock or other wall board
material is applied to the steel studs. This installation provides appropriate protection for duct penetrations
in fire resistant wall construction using steel studs with a fire resistance rating less than 3 hours. The
following wall design numbers (as detailed in the UL Fire Resistance Directory) are appropriate for fire
damper installations using this SSC option:
1 Hour Design: U405, U406, U422, U434, U448, U451, U456, U457, U465, U468, U469,
1 1 ⁄ Hour Design: U449, U452, U470, U471
2
2 Hour Design: U403, U411, U412, U421, U425, U428, U429, U443, U453, U474, U475,
6
Possible Cause
Frame is 'racked' causing blades to
bind on jamb
Screws in damper linkage
Contaminant's on damper
Heat
1 / hour rated fire dampers mounted in steel stud walls. Specific requirements in these
2
U485, U494
U477, U484, U491, U495
Corrective Action
Adjust frame such that it is square
and plumb
Locate screws and remove
Clean with a non-oil-based solvent
(see Damper Maintenance)
Replace link