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Фрагмент инструкции
Therefore, it is essential that openings in walls or floors be larger than the fire damper assembly DUCT CONNECTION AREA to allow for this expansion. The wall/floor opening must be a minimum of 7/8 in. (22mm) larger than the outside diameter of the damper. Refer to Section 4 for additional installation considerations. SLEEVE LENGTH Fig. 1 IN THIS GROOVE. RETAINER PLATE DO NOT PLACE IN THIS GROOVE. DO NOT PLACE RETAINER PLATE DAMPER FRAME DAMPER FRAME WOOD STUD MIN 1.00 STUD METAL 1.00 MIN 3 Installation - Continued 2. SLEE VE LENGTH AND WALL/FLOOR THICKNESS Insert the damper assembly into the prepared opening, to appropriate depth (see page 2, Fig. 1). Recommended maximum and minimum insertion depth can be exceeded as long as the CL of the damper blade remains within the plane of the wall/floor. important safety dANGER! To avoid causing death or serious bodily harm to building occupants, do not insert screws into the damper frame unless used for duct connection within 2 in. (51mm) of the frame end. The sleeve may extend a maximum of 6 in. (152mm) beyond both sides of the wall or floor. Recommended standard sleeve lengths for various wall/floor thicknesses are: 3. DUCT TO SLEEVE CONNECTIONS Dampers are supplied with sleeves from the factory and can be installed without the need for additional field installed sleeves. Gauge of factory furnished sleeve determines the type of duct to sleeve connections required (see table below). Any duct connection other than the breakaway connections are considered rigid. Opening + 2 in. Min. Wall/Floor Opening = Nominal Size + 7/8 in. Min. 1.00 in. Typ. Fasteners Clamping Screw Nut Retaining Plate Assembly Clamping Screw Fig. 2 5. Recommended Preparation of Openings in Wood and Metal Stud Walls • Frame wall openings as shown below. (see Fig. 3) • Double vertical studs are not required for openings 36 in. x 36 in. (914mm x 914mm) or smaller. • Gypsum wall board must be fastened 12 in. (305mm) on center to all stud and runner flanges surrounding opening. (see Fig. 4) • All construction and fasteners must meet the requirements of the appropriate wall design (See UL Fire Resistance Directory) and/or local codes. Fig. 3 4. SE CURING THE DAMPER/SLEEVE ASSEMBLY TO WALL AND FLOOR OPENINGS Damper assemblies must be installed in wall/floor openings using a single retaining plate on either side of the wall/floor or by using a retaining plate on both sides of the wall/floor. The use of a second retaining plate is allowed, but is not necessary. A single retaining plate is provided with the dampers. A second retaining plate can be ordered as an option. • The retaining plate(s) will open up for easy installation when the clamping screw is loosened. If necessary, remove the clamping screw and nut (see Fig. 2). (IMPORTANT: The clamping mechanism should face away from the wall/floor). Retainer plate(s) are designed to mount flush to the wall/floor and hold the damper in the wall/floor opening. Opening + 2 in. Min. Wall/Floor Opening = Nominal Size + 7/8 in. Min. 1.00 in. Typ. Fasteners Clamping Screw Nut Retaining Plate Assembly Clamping Screw Wall/Floor Thickness Dimension (Tw) Inches (mm) Sleeve Length Dimension (L) Inches (mm) Up to 61/2 (165) 13 5/8 (346) 61/2 - 81/2 (165 - 216) 15 5/8 (397) 81/2 - 101/2 (216 - 267) 17 5/8 (448) Sleeve Gauge (mm) Duct Dimension Maximum Inches (mm) Type of Duct to Sleeve Connection Permitted 10 ga. (3.5) 14 ga. (2) 24 (610) Rigid or Breakaway 16 ga. (1.5) 20 ga. (1mm) 24 (610) Breakaway only Sleeve thickness must not be less than the gauge of the connecting duct. UL Standard 555 requires all ducts to terminate at fire damper sleeves. • Place the damper and attached retainer plate into the wall/floor opening. • If a second retaining plate is being used, secure it on the opposite side of the wall/floor DO NOT POSITION RETA INER PLATE (S) IN FRAME GROOVE • Verify position, blade orientation, and actuator clearance then tighten the retainer plate clamping screws. The retainer plate(s) must overlap the wall/ floor opening a minimum of 1 inch (25mm). Secure the retainer plate(s) to the wall using appropriate fasteners (minimum #8 sheet metal screws) at the four corners of each retainer plate when two retainer plates are used and also within 3/4 in. (19mm) of the center of each plate when one retainer plate is used. 6.Round Duct Connections Round duct connections shall be attached with #8 sheet metal screws as follows: • Ducts 22 in. (559mm) dia. and smaller shall have three screws. • Ducts larger than 22 in. (559mm) dia. and up to including 24 in. dia. shall have five screws. Note: All breakaway connections described may have duct sealant, PA2084T Duct Sealant Adhesive manufactured by Precision or DP1010 Water Base Duct Sealant manufactured by Design Polymetrics, applied in accordance with SMACNA recommendations. ..........................................................................................................................................................
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