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DFD-XXX. CFSD-XXX. & SSFSD-XXX, Series Fire & Combination Fire Smoke Dampers’ (Part #461336) FSD Series Field Supplied Sleeves on Fire Smoke Dampers 1. GAUGES AND LENGTHS OF FIRE DAMPER SLEEVES All fire smoke dampers must be installed in a steel sleeve of the required gauge and length. See Table 1 for required minimum sleeve gauges. Maximum sleeve thickness is 10 gauge (3.5mm). Sleeve inside dimensions must equal damper outside dimensions. Sleeves shall extend a maximum of 16 in. (406mm) beyond the wall or floor on the actuator side of the damper (see Figure 1). When an access door is incorporated as a part of the sleeve on the side opposite the actuator, the sleeve shall also extend a maximum of 16 in. (406mm) beyond the wall or floor. When there is no access door incorporated as part of the sleeve. the sleeve shall extend a maximum of 6 in. (152mm) beyond the wall or floor on the side of the damper opposite the actuator. 2. ATTACHING FIRE DAMPERS TO SLEEVES All four sides of the damper frame must be attached to the sleeve with one row of attachments on each side of the frame. Attachments must be spaced a maximum of 6 in. (152mm) on centers and a maximum of 2 in. (51mm) from corners. A minimum of 4 attachments (2 on each side of the frame) per side (16 per damper) are required. One of the methods of attachment shown below must be used. • tack or spot welds • #10 sheet metal screws • 1/4 in. (6mm)bolts and nuts “UL CLASSIFIED (see complete marking on product)” “UL CLASSIFIED to Canadian safety standards (see complete marking on product)” Standards UL 555 & UL 555S Classifications Filed at UL under Listing #R13317 3/16 in. (4.7mm)steel pop rivets Minimum Sleeve Thickness for Fire Dampers Type of Duct to Sleeve Connection Duct Duct Dimension in. (mm) Sleeve Gauge Rigid Round Rectangular 24 in. (610mm) max. diameter 36 in. (914mm) max. width or 24 in. (610mm) max. height 16 (.060 in.) [1.5mm] Rigid Round Rectangular over 24 in. (610mm) diameter over 36 in. (914mm) width or over 24 in. (610mm) height 14 (.075 in.) [2mm] Breakaway (or no duct) Round or Rectangular 12 in. (305mm) wide and under 13 in. - 30 in. (330mm - 762mm) wide 31 in. - 54 in. (787mm - 1371mm) wide 55 in. - 84 in. (1397mm - 2134mm) wide 85 in. (2159mm) wide and over 26 (.018 in.) [.46mm] 24 (.024 in.) [.6mm] 22 (.030 in.) [.76mm] 20 (.036 in.) [.9mm] 18 (.048 in.) [1.2mm] Important Note: Sleeve thickness must not be less than the gauge of the connecting duct. UL Standard 555 requires all ducts to terminate at the fire damper sleeves or the damper frames. Table 1: Minimum sleeve thickness for fire dampers. /7? GREENHECK Copyright © 2008 Greenheck Fan Corporation 463543 Field Installed Sleeve Supplement Rev. 2 March 2008 P.O. Box410 ■ Schofield, Wl 54476-0410 ■ 715.359.6171-greenheck.com...