Mechanical · M-BJRMF

Combination Fire and Smoke Damper Detail

Materials

Concrete Steel Gypsum / Drywall

Elements

Walls Partitions Doors Floors / Slabs Connections / Plates Roof / Floor Openings

Connections

Welded Connection Bolted Connection

About this detail

A combination fire and smoke damper is installed within a rated wall or floor opening. The assembly features a continuous steel sleeve housing the damper unit, with mounting angles secured to the sleeve and providing a one-inch minimum overlap onto the partition framing without being attached directly to the wall. The duct connects to the sleeve using an S-joint or duct mate connection, left unbolted and unscrewed per installation requirements. Caulking material is applied at the sleeve interface, and an access door is positioned on the side or bottom of the duct. Angle sizes vary based on opening dimensions, and openings require a minimum clearance with proper framing protection as dictated by partition ratings.

SMOKE DETECTOR. 9 ACCESS DOOR SHALL BE LOCATED IN SIDE OR BOTTOM ON ONE SIDE OF COMBINATION FIRE AND SMOKE. 8 "S" SLIP DUCT CONNECTION DUCT SHALL NOT BE BOLTED OR SCREWED TO DUCT OR SLEEVE. 7 6 SLEEVE SHALL BE CONTINUOUS PER STATE FIRE MARSHAL LISTING. 5 4 3 2 1 EITHER SIDE OF DAMPER FRAME). ACTUATOR INSTALLED. ACTUATOR DAMPER SUPPLIED WITH S-JOINT/DUCT MATE, SLEEVE TO DUCT. 9 PFMA OR CONVENTIONAL MOUNTING ANGLES. 8 CAULKING MATERIAL (MAY BE ON 7 SLEEVE 6 OVER-CENTER LINK 5 DAMPER 4 AUXILIARY OPERATING JACK SHAFT. 3 FIRESTAT AND SIGNAL FROM DUCT 2 1 16" MAX. TYP. 6" MIN. 3 2 5 1 8 6 4 7 9 9 1/4" MINIMUM DUCT 10 10 ANGLE SIZE FOR SLEEVE MOUNTING: UP TO 2'-0" WIDTH OR HEIGHT, 1"X1"X1/8"; 2'-0" TO 6'-0" WIDTH OR HEIGHT, 2" X 2" X 1/8"; OVER 6'-0" HEIGHT, 3" X 3" X 14 GAGE. OPTION: FORMED 10 GAGE ANGLES ALL AROUND SLEEVE. ANGLES SHALL NOT BE ATTACHED TO WALL. OVER LAP OF WALL FRAMING SHALL BE 1" MINIMUM. ANGLES SHALL NOT BE WELDED TO EACH OTHER. OPENING IN FLOOR OR WALL SHALL BE 1/8" PER FOOT LARGER THAN DAMPER DIMENSION. MINIMUM CLEARANCE OF 1/4" REQUIRED FOR ANY INSTALLATION. DAMPER SHALL BE "RUSKIN" MODEL NO. FSD60, COMBINATION FIRE-SMOKE AND LEAKAGE RATED MULTIPLE BLADE DAMPER, CLASS 1, 4 CFM PER SQ. FT. WITH ELECTRIC OPERATOR. FIRE RATING OF PARTITION AS NOTED ON ARCHITECTURAL DRAWINGS. OPENING SHALL BE FRAMED WITH A MINIMUM OF 5/8" GYPSUM BOARD OR EQUIVALENT PROTECTION. CONCRETE AND MASONARY WALL OPENINGS NEED NOT BE LINED. COMBINATION DAMPER DETAIL FOR REFERENCE ONLY. FIRE AND SMOKE DAMPERS SHALL BE STATE FIRE MARSHAL APPROVED OR AN APPROVED EQUAL AND INSTALLED STRICTLY PER THE MANUFACTURER'S PRINTED INSTRUCTION. MANUFACTURER'S INSTALLATION INSTRUCTION FOR ALL FIRE AND SMOKE DAMPERS SHALL BE BE KEPT ON THE JOB SITE AND MADE AVAILABLE TO THE INSPECTION AUTHORITY. COMBINATION FIRE AND SMOKE DAMPER FRAME SHALL BE WELDED TO SLEEVE WITH 1" FILLETS AT 8" ON CENTER MAXIMUM EACH SIDE (MINIMUM 2 PER SIDE) OPTION: DAMPER FRAME MAY BE FLANGED AND BOLTED TO SLEEVE WITH 1/4"₂ BOLTS AT 8" ON CENTERS MAXIMUM EACH SIDE OF FRAME (MINIMUM 2 PER SIDE). 1" MINIMUM (TYP.)OVERLAP ON ALL SIDES OF DAMPER AREA PENDANT MOUNTED SD. IN ACCORDANCE WITH NFPA 72 , FURNISHED UNDER SECTION 26. INSTALLED UNDER SECTION 23. 11 USE MANUFACTURER UL LISTED DETAIL FOR ALTERNATE INSTALLATIONS. NOTES: ITEMS:

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