Table of Contents
Advertisement
Securing the Damper/Sleeve Assembly to Wall and Floor Openings
Damper assemblies must be installed in wall and floor openings using a single retaining plate on either side of the
wall/floor or by using a retaining plate on both sides of the wall/floor. A single retaining plate is provided with
the dampers. A second retaining plate can be ordered as an option.
• The retaining plate(s) will open up for easy installation when the clamping screw is loosened. If necessary, remove
the clamping screw and nut (see Figure 7).
• Position the retaining plate between the blade axle and the
actuator shaft as shown in Figure 5 & 6. Do not place
the retaining plate in the groove. IMPORTANT: The
clamping mechanism should face away from the wall/
floor.
• Place the damper and attached retaining plate into the
wall/floor opening.
• If a second retaining plate is being used, secure it on the
opposite side of the wall/floor.
• Verify position, blade orientation, and actuator clearance
then tighten the retaining plate clamping screws.
• The retaining plate(s) must overlap the wall/floor opening a
minimum of 1 in. (25 mm).
• Secure the retaining plate(s) to the wall at the four corners
of each plate when two retaining plates are used
and also within
⁄
in. (19 mm) of the center of each
3
4
side when one retaining plate is used. The following
fasteners shall be used:
- #8 or #10 screws of a length such that the screw
engages the steel stud/track by
framing).
- #8 or #10 screws of a length such that screw engages
the wood stud by 1
- Steel anchors or self tapping concrete screws penetrating masonry or block by 1
Duct to Sleeve Connections
Sleeve Gauge and Connection Type Requirements
Round duct connections shall be attached with #8 or #10 sheet metal screws as follows:
• Ducts 22 in. (558 mm) dia. and smaller shall have three screws.
• Ducts larger than 22 in. (558 mm) dia. up to and including 24 in. (610 mm) dia. shall have five screws.
Note: All connections described may have duct sealant, PA2084T duct sealant adhesive manufactured by Precision,
DP1010 water base duct sealant manufactured by Design Polymerics, Grey Pookie, Ductmate PROseal ® , or
CL Ward S Seal applied in accordance with SMACNA recommendations.
Actuator and Temperature Response Device Connections
Actuator Connections
Electrical and/or pneumatic connections to damper actuators should be made in accordance with wiring and piping
diagrams developed in compliance with applicable codes, ordinances and regulations (see Electrical Guidelines).
6
Round Fire and Combination Fire Smoke Dampers
⁄
in. (13 mm)(steel
1
2
⁄
in. (44 mm) (wood framing)
3
4
Minimum Wall/Floor Opening
= Nominal Dia. + 7/8 in.
1.00 in. Min. Typ.
Figure 7: Retaining Plates
1
Opening + 2 in. Min.
Clamping
Screw
Fasteners
Nut
Retaining
Plate Assembly
Clamping Screw
⁄
in. (32 mm).
4
®
Advertisement
Table of Contents
