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Chapter 3 — System Design Page 3 -14 REV. 3 Fryer — Multiple Nozzle Protection PIPING LIMITATIONS Fryers exceeding the coverage of a single nozzle can be Once the nozzle placement and quantity of tanks has been divided into modules. Each module must not exceed the determined, it Is necessary to determine the piping configu- maximum area allowed for a single nozzle. However, when rations between the tank and the nozzles. This section utilizing multiple nozzle protection, the longest side allowed contains the guidelines and limitations for designing the for a fryer with drip board can be used, regardless of distribution piping so that the wet chemical agent will whether the fryer has a drip board or not. discharge from the nozzles at a proper flow rate. These limi- tations must also be referred to when selecting the mounting The maximum size fryer that can be modularized is 864 sq. location for the tanks. in. (5574 sq. cm). The maximum pipe lengths are based on internal pipe Design requirements for multiple nozzle fryers are broken volume. Each size tank Is allowed a minimum and maximum down as follows: total volume of piping, calculated in milliliters. 1. If the fryer includes any dripboard areas, measure both There is no need to distinguish between what portion of the the internal length (front to back) and width of the frypot piping is supply line and what portion is branch line. Only portion. Then measure the internal length and width of the total volume of the complete piping network has to be the overall hazard area including any dripboard areas. considered. Determine the area of both the frypot and the area of the overall vat by multiplying corresponding length and width Volume Chart dimensions. 1/4 in. pipe = 20.5 mls./ft. 2. Divide the frypot or overall vat into modules, each of 3/8 In. pipe = 37.5 mls./ft. which can be protected by a single nozzle, based on the 1/2 in. pipe = 59.8 mls./ft. maximum dimension and area coverage of the nozzle as specified in "Design Chart." 3/4 In. pipe = 105.0 mls./ft. • If the module considered does not include any portion of the dripboard, use only the maximum frypot area Tank Chart and maximum dimension listed in the "Design Chart." • If the module considered includes any dripboard Maximum Maximum V Volum Volume ed e Allow areas, use both the maximum frypot area and dimen- en First sion listed in the "Design Chart", and the maximum Maximum Max Be a and overall area and dimension listed in the "Design Tank Flow Volume Last Nozzle Chart." Size Numbers (milliliters) (milliliters) 3. None of the maximum dimensions may be exceeded. If ■ 1.6 Gallon 5 1500 600 either the maximum frypot or the overall sizes are ■ PCL -160 exceeded, the area divided into modules will need to be 3.0 Gallon 10 1910 1125 redefined with the possibility of an additional nozzle. PCL -300 4.6 Gallon 14 3400 3000 PCL -460 4.6 Gallon 15 2600 2000 PCL -460 6.0 Gallon 19 4215 1688 PCL -600 per side 6.0 Gallon 20 3465 1313 PCL -600 per side ULEX 3830 August 1, 2005 PN551274(3)