Mechanical · M-WXWMH

Vertical Fire Smoke Damper Installation

Materials

Elements

Walls Partitions Doors Ceilings Connections / Plates Roof / Floor Openings

About this detail

A vertical fire and smoke damper is installed within a fire-rated wall assembly, featuring a steel sleeve extended a minimum of three inches on each side of the partition. The damper includes blades positioned entirely within the rated wall assembly when closed, connected to an external damper actuator, end switches, control linkage, and an auxiliary operating jack shaft. Duct connections utilize breakaway joints installed per the manufacturer's instructions, with framing and mounting angles securing the assembly. A ceiling access panel measuring eighteen by eighteen inches is provided for actuator and damper maintenance, with the surrounding opening framed and sheetrocked by the general contractor with required clearance.

BREAKAWAY CONNECTION PER MANUFACTURER'S INSTRUCTIONS FRAMING AND MOUNTING ANGLE PER MANUFACTURER'S INSTRUCTIONS DAMPER INSTALL FSD SUCH THAT DAMPER BLADES ARE IN THE RATED WALL ASSEMBLY WHEN CLOSED SLEEVE EXTENDED MIN. 3" EACH SIDE OF PARTITION FIRE RATED WALL BREAKAWAY CONNECTION PER MANUFACTURER'S INSTRUCTIONS BLADES 18x18 CEILING ACCESS PANEL FOR ACTUATOR AND DAMPER ACCESS BY G.C. (FIRE RATED WHERE REQ'D) OPENING TO BE FRAMED AND SHEETROCKED BY G.C. (WITH REQUIRED CLEARANCE) DAMPER ACTUATOR END SWITCHES FIRE/SMOKE DAMPER DUCT ACCESS CONTROL LINKAGE AUXILIARY OPERATING JACK SHAFT CEILING : SUPPLY OR RETURN DUCT WHERE OCCURS NOTE: WHERE INSTALLATION DETAIL AND MANUFACTURER'S INSTALLATION INSTRUCTIONS CONFLICT, MANUFACTURER'S INSTRUCTIONS SHALL PREVAIL NOTES REGARDING SMOKE DAMPER ACTUATION (2022 CBC 717.3.3.2): SMOKE DAMPERS SHALL BE CLOSED BY ACTUATION OF A SMOKE DETECTOR INSTALLED IN ACCORDANCE WITH THE FIRE CODE AND ONE OF THE FOLLOWING APPLICABLE METHODS 1. WHERE A SMOKE DAMPER IS INSTALLED WITHIN A DUCT, A SMOKE DETECTOR SHALL BE INSTALLED INSIDE THE DUCT OR OUTSIDE THE DUCT WITH SAMPLING TUBES PROTRUDING INTO THE DUCT. THE DETECTOR OR TUBES WITHIN THE DUCT SHALL BE WITHIN 5 FEET (1524 MM) OF THE DAMPER. AIR OUTLETS AND INLETS SHALL NOT BE LOCATED BETWEEN THE DETECTOR OR TUBES AND THE DAMPER. THE DETECTOR SHALL BE LISTED FOR THE AIR VELOCITY, TEMPERATURE AND HUMIDITY ANTICIPATED AT THE POINT WHERE IT IS INSTALLED. OTHER THAN IN MECHANICAL SMOKE CONTROL SYSTEMS, DAMPERS SHALL BE CLOSED UPON FAN SHUTDOWN WHERE LOCAL SMOKE DETECTORS REQUIRE A MINIMUM VELOCITY TO OPERATE. 2. WHERE A SMOKE DAMPER IS INSTALLED ABOVE BARRIER DOORS IN A SMOKE BARRIER, A SPOT-TYPE DETECTOR SHALL BE INSTALLED ON EITHER SIDE OF THE SMOKE BARRIER DOOR OPENING. THE DETECTOR SHALL BE LISTED FOR RELEASING SERVICE IF USED FOR DIRECT INTERFACE WITH THE DAMPER. 3. WHERE A DAMPER IS INSTALLED WITHIN AN AIR TRANSFER OPENING IN A WALL, A SPOT-TYPE DETECTOR SHALL BE INSTALLED WITHIN 5 FEET HORIZONTALLY OF THE DAMPER. THE DETECTOR SHALL BE LISTED FOR RELEASING SERVICE IF USED FOR DIRECT INTERFACE WITH THE DAMPER. 4. WHERE A SMOKE DAMPER IS INSTALLED IN A CORRIDOR WALL OR CEILING, THE DAMPER SHALL BE PERMITTED TO BE CONTROLLED BY A SMOKE-DETECTION SYSTEM INSTALLED IN THE CORRIDOR. 5. WHERE A SMOKE DETECTION SYSTEM IS INSTALLED IN ALL AREAS SERVED BY THE DUCT IN WHICH THE DAMPER WILL BE LOCATED, THE SMOKE DAMPER SHALL BE PERMITTED TO BE CONTROLLED BY THE SMOKE-DETECTION SYSTEM. DAMPER SHALL BE INSTALLED IN COMPLIANCE WITH UL555 (FIRE DAMPERS), UL555S (SMOKE DAMPERS), OR BOTH FOR COMBINATION FIRE/SMOKE DAMPERS. NOTE : DUCT SMOKE DETECTORS FURNISHED AND WIRED BY FLS CONTRACTOR, INSTALLED BY ACCO WITHIN 5' OF DAMPER.

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