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These instructions cover the installation of CFSD-XXX 
leakage rated combination fire smoke dampers with 
factory installed actuators and sleeves in corridor ceiling 
applications. These instructions meet the requirements 
of UL 555 and UL 555S.
There are three different configurations available for 
this application. Configurations 1 and 2 apply when 
the fire rated ceiling is also the finished ceiling and the 
damper is installed behind a grille, register, or diffuser. 
Configuration 3 applies when the fire rated ceiling is 
above the finished ceiling and the grille, register or 
diffuser is somewhere below the corridor damper.

Receiving and Handling

Upon receiving dampers, check for both obvious 
and hidden damage. If damage is found, record all 
necessary information on the bill of lading and file 
a claim with the final carrier. Check to be sure that 
all parts of the shipment, including accessories, are 
accounted for.
Dampers must be kept dry and clean. Indoor storage 
and protection from dirt, dust, and the weather is 
highly recommended. Do not store at temperatures in 
excess of 100°F (38°C).

SAFETY WARNING

Improper installation, adjustment, alteration, service 
or maintenance can cause property damage, injury 
or death. Read the installation, operating, and 
maintenance instructions thoroughly before installing 
or servicing this equipment.

Table of Contents

General Information . . . . . . . . . . . . . . . . . . 2
Installation Supplements.   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   2
Electrical Guidelines . . . . . . . . . . . . . . . . . . 2
Pre-Installation Guidelines .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   2
Preparation of Openings .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   3
Clearances Required Between Corridor Damper Sleeves 
and Ceiling Openings . . . . . . . . . . . . . . . . . 3
Maximum Assembly Table .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   3
Securing the Damper/Sleeve Assembly to Ceiling 
Openings .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   4
Duct to Sleeve Connection  . . . . . . . . . . . . . . 5
Actuator and Temperature Response Device 
Connections . . . . . . . . . . . . . . . . . . . . . . 7
Damper Maintenance . . . . . . . . . . . . . . . . . 8
Damper Troubleshooting.   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   8

®

CFSD Series

1

®

Document 461335

 

Corridor Ceiling Dampers

CFSD-xxx Series 

(with factory installed sleeve and actuator

Installation, Operation and Maintenance Manual

Please read and save these instructions for future reference. Read carefully before attempting to assemble, install, 
operate or maintain the product described. Protect yourself and others by observing all safety information. Failure 
to comply with these instructions will result in voiding of the product warranty and may result in personal injury 
and/or property damage.

Summary of Contents for CFSD-211

Page 1: ...at temperatures in excess of 100 F 38 C SAFETY WARNING Improper installation adjustment alteration service or maintenance can cause property damage injury or death Read the installation operating and maintenance instructions thoroughly before installing or servicing this equipment Table of Contents General Information 2 Installation Supplements 2 Electrical Guidelines 2 Pre Installation Guidelines...

Page 2: ...tallations can cause excessive leakage and or torque requirements to exceed damper actuator design 6 Damper and actuator must be kept clean and protected from dirt dust and other foreign materials prior to and after installation Examples of such foreign materials include but are not limited to a Mortar dust b Drywall dust c Firesafing materials d Wall texture e Paint overspray 7 Damper should be s...

Page 3: ...tance Directory and or local codes Figure 1 Steel studs 2 in x 4 in nominal wood studs Steel Stud Assembly Wood Stud Assembly 24 in max 24 in max 24 in o c max Opening lined with UL rated 5 8 in gypsum board Figure 2 Steel studs 2 in x 4 in nominal wood studs Steel Stud Assembly Wood Stud Assembly 24 in max 24 in o c max 24 in max 24 in o c max Opening lined with UL rated 5 8 in gypsum board Clear...

Page 4: ...imum of two attachments are required on each side top and bottom The angles may be attached to each other at the corners Retaining angles must cover the clearance space between the sleeve and the ceiling opening Retaining angles See Section 3 2 in x 4 in wood or 2 in x 2 1 2 in steel studs 1 in x 2 1 2 in 16 ga angles either inside or outside of sleeve Grille supplied by others Opening lined with ...

Page 5: ...0 19 mm sheet metal screws on each side and on the bottom may be used The screws should be located in the center of the slip pocket and penetrating both sides of the slip pocket Dampers up to 20 inches 508 mm high may use transverse joints on the top and bottom and Drive Slip joints see Figure 6 on the sides Plain S Slip Hemmed S Slip Double S Slip Inside Slip Joint Standing S Standing S Alt Stand...

Page 6: ... 5 5 5 6 Std Clip Length C L Duct 60 Duct 4 Reqd 48 Duct 3 Reqd 36 Duct 3 Reqd 24 Duct 2 Reqd 18 Duct Smaller 1 Reqd Clip Spacing Typical TDC TDF joint 6 Figure 10 Manufactured Flanged System Breakaway Connections Flanged connection systems manufactured by Ductmate Durodyne Ward MEZ and Nexus are approved as breakaway connections when installed as illustrated see Figure 9 Figure 13 Metal cleat met...

Page 7: ...ndicator option contains two single pole single throw switches used to indicate the damper blade position The switches provide a positive open and closed signal and can be used in conjunction with remote indicator lights Refer to Figure 14 for wiring of the OCI option RRL OCI The RRL OCI performs the function of an RRL and OCI see description above Refer to Figure 15 for wiring of the RRL OCI opti...

Page 8: ...ls Adjust frame such that it is square and plumb Actuator linkage loose Close damper disconnect power adjust and tighten linkage Defective motor Replace Screws in damper linkage Damper installed too far into wall Move out to line as designated on damper label Contaminants on damper Clean with a non oil based solvent see Damper Maintenance RRL or TOR sensor tripped Heat Push reset button located on...

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