Greenheck Fan Ventilation Hood DFD Series User Manual

Part number 469419  
Firestop Material  
®
INSTALLATION INSTRUCTION SUPPLEMENT  
Refer to:  
DFD Series  
‘Installation Instructions for FSD-XXX, DFD-XXX,  
SSFSD-XXX & CFSD-XXX Series Fire & Combination Fire  
Smoke Dampers’ (Part #461336)  
11/2 Hour Multi-Blade Fire Dampers and  
FSD Series  
11/2 Hour Combination Fire Smoke  
Dampers-Vertical Mount  
These instructions apply to 11⁄2 hour rated combination  
fire smoke dampers and dynamic rated multi-blade  
fire dampers mounted in masonry, block, or metal or  
wood stud walls. Note: This installation is intended  
for underfloor applications where the damper/duct is  
directly above (4 in. [101mm] or less) the rated concrete  
floor (see Figure 2). No duct impact test was conducted.  
Specific requirements in these instructions are mandatory.  
These instructions meet the requirements of UL 555.  
Recommended clearances, for width and/or height dimen-  
sions of:  
1) 48 in. (1219mm) or less: 34 in. (19mm) clearance  
2. Packing (optional) - Polyethylene backer rod, recessed from  
surfaces of wall to accommodate the required thickness of  
fill material.  
Installation shall comply with the requirements of NFPA  
90A (Standard for the Installation of Air Conditioning and  
Ventilating Systems) and UL Classification R13317.  
3. Fill Material - Hilti Corporation - FS-One fire stop caulk  
applied to a minimum 5/8 in. (16mm) thickness within the  
annular space and flush with both surfaces of the wall  
with a 1 in. (25mm) overlap onto the gypsum board. If the  
damper/sleeve assembly comes into contact with the wall,  
a minimum of 3/8 in. (10mm) diameter bead shall be applied  
to the interface between the sleeve and contact surface.  
Firestop should be installed according to manufacturers  
instructions and firestop instructions given in the 2007 UL  
Fire Resistance Directory Volume 2B, page 4471.  
Fire and Combination Fire/Smoke dampers up to a  
maximum size of 72 in. W x 96 in. H (1828mm x 2438mm)  
may be installed as instructed below.  
1. Expansion Clearance - Fire damper and sleeve  
assemblies expand during periods of intense heat.  
Therefore, it is essential that openings in walls or  
floors be larger than the fire or fire/smoke damper and  
sleeve assembly to allow for this expansion. Minimum  
clearances required between the outside of fire or fire/  
smoke damper sleeve assemblies and wall openings  
are:  
4. Retaining Clip - Retaining clip 1 in. x 2 in. x 2 in. x 16 gauge  
(25mm x 51mm x 51mm x 1.5mm) is attached to one side of  
the wall with 1 1/2 in. (38mm) long #8 sheet metal screws or  
masonry screws in the masonry wall. The 1 in. (25mm) leg of  
the clip shall be attached to the damper sleeve with 1/2 in.  
(13mm) long #10 sheet metal screws. The retaining clips are  
required to be spaced a maximum of 6 in. (152mm) from the  
top of the sleeve and spaced a maximum of 12 in. (305mm)  
on center on the sides of the unit only.  
• Galvanized steel fire dampers and sleeves: 18 in.  
(3mm) per foot of damper width and height with a  
minimum clearance of 14 in. (6mm), maximum of 1  
12 in. (38mm). Recommended clearances, for width  
and/or height dimensions of:  
1)48 in. (1219mm) or less: 12 in. (13mm)  
clearance  
2) More than 48 in. (1219mm) and 96 in.  
(2438mm) or less: 1 in. (25mm) clearance  
3) More than 96 in.(2438mm): 112 in. (38mm)  
clearance  
Floor tiles  
Rated wall  
• Stainless steel fire/smoke dampers and stainless  
steel or galvanized sleeves: 316 in. (4.7mm) per  
foot of damper width and height with a minimum  
clearance of 1/4 in. (6mm) , maximum of 2 in.  
(51mm)  
Fill material  
Retaining  
Ductwork  
clip  
Fill material  
max. 4 in. (102mm)  
(one side only on bottom)  
Rated masonry floor  
Figure 1  
Figure 2  
Copyright © 2008 Greenheck Fan Corporation  
Firestop Material IOM Rev 2 Mar 2008  
 

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