TRUE ROUND FIRE & FIRE/SMOKE DAMPER INSTALLATION,
OPERATION & MAINTENANCE INSTRUCTIONS
IOM - TRUE ROUND FIRE & FIRE/SMOKE DAMPERS - 1016
NCA MANUFACTURING INC. • 1985 CARROLL ST. • CLEARWATER, FL 33765 • 727.441.2651 • www.ncamfg.com
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TABLE OF CONTENTS
Pre-Installation Guidelines ............................................................................................................................
Size Table for NCA True Round Fire & Fire/Smoke Dampers .......................................................
Damper Sleeves & Mounting Clips ...........................................................................................................
2 Angle Method of Installation ....................................................................................................................
1 Angle Method of Installation ....................................................................................................................
Actuator Connections ....................................................................................................................................
True Round Fire & Fire/Smoke Damper Operation, Testing & Maintenance ..........................
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Pre-Installation Notes and Guidelines:
These notes and guidelines are formulated in order to aid in completing the damper installation in a
timely and efficient manner.
A.
Inspect damper for damage before installing.
B.
Dampers must be installed free from twisting or racking.
C.
DO NOT compress or stretch the damper into the opening.
D.
DO NOT lift the damper by the blades or actuator (handle damper using frame or sleeve).
E.
The damper must be protected from dirt, dust and foreign materials before and after installation.
F.
When painting, wall-texturing, insulating or any other foreign material is being sprayed within 5 feet of the damper, the
damper must be sufficiently covered and protected.
G.
Suitable access inside the duct and to the damper must be created for inspection and service of the damper per NFPA
90A and local authority having jurisdiction.
Maximum & Minimum Size Smoke Dampers:
(All dimensions in parentheses () are in millimeters.)
Model
Vertical
Horizontal
FSD-RD-211
8” - 24”
(203-610)
8” - 24”
(203-610)
FSD-RD-212
8” - 24”
(203-610)
8” - 24”
(203-610)
FD-RD
8” - 24”
(203-610)
8” - 24”
(203-610)
FDD-RD
8” - 24”
(203-610)
8” - 24”
(203-610)
