The detail illustrates a combination fire and smoke damper assembly housed within a galvanized steel sleeve penetrating a fire/smoke rated partition. It features perimeter angles, an airtight breakaway duct connection, an actuator, an access panel, damper blades, and firestop material filling the opening clearance according to UL rating requirements. General installation notes provide specifications for gauge thickness, clearances, and wiring.
Text on the drawing
8 5 9 3 6 1 7 4 2 ACTUATOR FIRE/SMOKE RATED ASSEMBLY DUCT INSULATION (TYP) 1. COMBINATION FIRE AND SMOKE DAMPER (VERTICAL SUPPLY TYPE SHOWN, HORIZONTAL & RETURN/EXHAUST SIMILAR). 2. GALVANIZED STEEL SLEEVE. GAUGE NOT LESS THAN CONNECTION DUCT. FASTEN TO DAMPER FRAME AND PERIMETER ANGLES. CAULK BETWEEN DAMPER FRAME AND SLEEVE. 3. PERIMETER ANGLES. 14 GA GALVANIZED STEEL, 1 1/2" x 1 1/2" MIN TO PROVIDE 1" MIN OVERLAP OF OPENING ON ALL SIDES. DO NOT FASTEN TO PARTITION. 4. AIR TIGHT, BREAKAWAY DUCT CONNECTION. 5. ACCESS PANEL. SIZE AND LOCATION TO PERMIT SERVICING FUSIBLE ROD AND LINK. ACTUATOR TO BE LOCATED OUT OF AIR STREAM. LOCATE PANEL WITHIN 12" OF FSD. 6. PROVIDE 1/4" TO 1/2" CLEARANCE ON HEIGHT AND WIDTH, OR AS SPECIFIED BY DAMPER MANUFACTURER. FILL OPENING WITH FIRESTOP MATERIAL PER UL RATING REQUIREMENTS. 7. PROVIDE AIRFOIL BLADES ON MEDIUM PRESSURE DUCTWORK. 8. SMOKE DETECTOR FURNISHED BY DIVISION 26, INSTALLED PER DIVISION 23, POWER WIRING PER DIVISION 26, CONTROL WIRING PER DIVISION 28. 9. DAMPER SWITCH POSITION. NOTES:
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