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• • System Design <br /> 3-6.1.1, DUCTS <br /> The ADP nozzle, P/N 87-12001 1-001 is used for protection of the exhaust ductwork, <br /> The duct cross section can be any shape, not including obstructions (i.e., round, square, or <br /> rectangular) and the duct itself can be of unlimited Iength. In accordance with NFPA 96, the exhaust <br /> fan should be left running at the time of system discharge. This will help to remove smoke and other <br /> airborne materials and gases from the hazard area in the event of a fire. Check with the Authority <br /> Having Jurisdiction for local requirements. A damper, if present, should be left open at system <br /> discharge. However, if the damper is closed, the system designer must insure that additional nozzles <br /> are required. <br /> 3-6.1.1.1 Protection of Ducts 0 to 50 inches in Perimeter <br /> One ADP nozzle, P/N 87-1 200 1 1-001, is required for protection of a duct with a perimeter up to 50- <br /> inches (refer to Figure 3-29). Length of duct is unlimited. <br /> The nozzle is located at the geometric center of the cross-sectional area that it is protecting, and is <br /> located in the duct within six inches of the entrance. <br /> Note: All Range Guard systems are listed by UL and ULC for use with the exhaust fan either on or <br /> off when the system is discharged. <br /> DUCT <br /> i I <br /> E z <br /> HOOD <br /> DUCT PERIMETER UP TO AND INCLUDING 50 in.(1270 mm) <br /> 11.78 in.(300 mm) 15.91 in. <br /> MAX. DIAGONAL <br /> (404 nun) <br /> .�-MAX...0„I i.F..-.—•. "B" <br /> 12.5 in. ? _ 1 11.78 in.(300 mrn) <br /> _._(318 mm) MAX.DIAGONAL <br /> ...... -.._._ . <br /> MAX. f I <br /> SQUARE DUCT * RECTANGULAR DUCT <br /> 2"A"+2 "B"=65 in. (1651 mm) <br /> ROUND DUCT <br /> • <br /> OF VERTICAL DUCT <br /> ADP NOZZLE <br /> �- AIM POINT <br /> VERTICAL/HORIZONTAL DUCT = <br /> S <br /> 0-6 in.(0-152 mm) <br /> i <br /> ADP NOZZLE � r� <br /> DUCTENTRANCE 4.OF HORIZONTAL DUCT <br /> 2 to 4 in.(51 to 102 mm) <br /> [ NOZZLE TIP to DUCT HIP <br /> Figure '3-29. Duct Protection Using Single ADP Nozzle, P/N 8'7-12001 1-001 <br /> PiN 60-9I 27100.000 3-35 J 1\ April 2009 <br />