Inserting Damper Into Wall/Floor Openings - Greenheck DFDR Series Installation, Operation And Maintenance Manual

Inserting Damper into Wall/Floor Openings

Insert the damper assembly into the prepared opening, to appropriate depth (see Figure 5 & 6).
Special attention must be paid to ensure the following:
C L
1) The (centerline) of the blade axle remains within the plane of the wall or floor
2) The sleeve does not extend more than 16 in. (406 mm) beyond the wall or floor on the actuator side of the
damper and 6 in. (152 mm) on the side opposite the actuator. The sleeve may also extend up to 16 in. (406 mm)
beyond the wall or floor if the damper has an access door.
®
DUCT
CONNECTION
AREA
1.50 IN.
AIRFLOW
Optional
Second
Retaining
Plate
3.375 IN.
6 IN. MAX
TW
SLEEVE LENGTH
TOP VIEW OF DAMPER
Figure 5: FSDR/SEFSDR/SSFSDR
Retainer Plate
Duct Connection
Area
2 in.
AIRFLOW
6 in. max.
TW
Sleeve Length
Figure 6: DFDR/FDR/SEDFDR/SSDFDR/SSFDR
CLEARANCE FOR
EXPANSION
OPTIONAL BLADE POSITION
INDICATOR AND/OR ELECTRIC
LINK.
Do not place retainer
plate in this groove
1.50 IN.
FUSIBLE
LINK
LOCATION
DUCT
CONNECTION
AREA
2.00 IN.
ACTUATOR
16.00 IN MAX
Clearance for expansion
Retainer plate
Blade latch
Access door to be on
same side as blade latch
Duct connection
area
2 in.
Do not place retainer
plate in this groove
6 in. max.
Round Fire and Combination Fire Smoke Dampers 5