Mechanical · M-VJ6RP

Horizontal Fire/Smoke Damper

Materials

Elements

Walls Partitions Doors Ceilings Decks Connections / Plates Roof / Floor Openings

About this detail

A fire and smoke damper is installed within a rated wall assembly with the damper blades positioned directly inside the rated partition. The sleeve extends a minimum of three inches on each side of the partition, utilizing single-sided or two-sided framing and mounting angles per the manufacturer's instructions. Duct connections are made using breakaway joints on both sides of the assembly. The damper is equipped with an actuator, auxiliary operating jack shaft, control linkage, and optional firestat or end switches, alongside an access door for maintenance. The general contractor provides the wall opening with the required clearance.

SLEEVE EXTENDED MIN. 3" EACH SIDE OF PARTITION INSTALL FIRE DAMPER SUCH THAT DAMPER BLADES ARE IN THE RATED WALL ASSEMBLY OPTIONAL FIRESTAT OR END SWITCHES CONTROL LINKAGE DAMPER ACTUATOR BLADES BREAKAWAY CONNECTION PER MANUFACTURER'S INSTRUCTIONS DAMPER AUXILIARY OPERATING JACK SHAFT BREAKAWAY CONNECTION PER MANUFACTURER'S INSTRUCTIONS FRAMING AND MOUNTING ANGLE TO BE SINGLE SIDED OR TWO SIDED PER MANUFACTURER'S INSTRUCTIONS OPENING BY G.C. (WITH REQUIRED CLEARANCE) PER MANUFACTURER'S INSTRUCTIONS : FIRE RATED DECK SUPPLY OR RETURN DUCT WHERE OCCURS FIRE/SMOKE DAMPER DUCT ACCESS NOTE: WHERE INSTALLATION DETAIL AND MANUFACTURER'S INSTALLATION INSTRUCTIONS CONFLICT, MANUFACTURER'S INSTRUCTIONS SHALL PREVAIL. NOTES REGARDING SMOKE DAMPER ACTUATION (2019 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. NOTE : DUCT SMOKE DETECTORS FURNISHED AND WIRED BY FLS CONTRACTOR, INSTALLED BY ACCO WITHIN 5' OF DAMPER.

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