Greenheck FD Series Installation Instruction Supplement

®
Refer to:
'Installation Instructions for FD, DFD, DFD X series, and FD
X series Fire Damper Models' (Part #481324)
or
'Installation Instructions for FSD-XXX, DFD-XXX, and
SSFSD-XXX Series Fire & Combination Fire Smoke
Dampers' (Part #481318) for additional details.

Application

Factory installed sleeves may need to be extended in the field. This supplement covers the following applications:
• When the factory sleeve extends all the way through the rated barrier (Figure 1)
• When the factory sleeve ends in the plane of the rated barrier (Figure 2).
Minimum 1 in.
Overlap
Sleeve
Extension
Figure 1: Factory sleeve extends all the way
through the rated barrier.
This supplemental installation instruction provides details for attachment of the sleeve extension. Consult Authority
Having Jurisdiction (AHJ) for approval.

Notes

1. Sleeve extension must be same material and gage as factory sleeve.
2. The inside dimensions of the sleeve extension must be the same dimensions as the outside dimensions of the
factory sleeve.
®
Factory Sleeve
Fire Rated Partition
Fire or Fire Smoke
Damper
Factory Sleeve
Figure 2: Factory sleeve ends in the plane of the rated
Installation Instruction Supplement
FD & DFD Series Fire Dampers
Combination Fire Smoke Dampers
Connecting Joint of Sleeves
See notes 4,5, and 7
barrier.
Document 462103
Sleeve Extensions
and FSD Series
Sleeve Extension
Fire or Combination Fire
Smoke Damper
Sleeve Extensions 1