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Chapter 3—System Design Page 3-14 FtEV.5 Pryer— 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 maxi- determined, it is necessary to determine the piping configura- mum area allowed for a single nozzle.However,when utilizing tions between the tank and the nozzles.This section contains multiple nozzle protection,the longest side allowed for a fryer the guidelines and limitations for designing the distribution with drip board can be used, regardless of whether the fryer piping so that the wet chemical agent will discharge from the has a drip board or not. nozzles at a proper flow rate.These limitations must also be referred to when selecting the mounting location for the tanks. The maximum size fryer that can be modularized is 864 sq in. (5574 sq cm). The maximum pipe lengths are based on internal pipe volume. Each size tank is allowed a minimum and maximum total Design-requirements for multiple nozzle fryers are broken volume of piping,calculated in milliliters. down as follows: There is no need to distinguish between what portion of the 1. If the fryer includes any dripboard areas, measure both the piping is supply line and what portion is branch line.Only the internal length (front to back)and width of the frypot total volume of the complete piping network has to be consid- portion.Then measure the internal length and width of the ered. overall hazard area,including any dripboard areas. Determine the area of both the frypot and the area of the Volume Chart overall vat by multiplying corresponding length and width 1/4 in.pipe=20.5 mis/ft dimensions. 3/8 in.pipe=37.5 mis/ft 2. Divide the frypot or overall vat into modules, each of which 1/2 in.pipe=59.8 mis/ft can be protected by a single nozzle,based on the maxi- mum dimension and area coverage of the nozzle as speci- 3/4 in.pipe=105.0 mis/ft fied in"Design Chart." • If the module considered does not include any portion of Tank Chart the dripboard, use only the maximum frypot area and - n;• maximum dimension listed in the"Design Chart." . *Maximum ,�;. `' •` Volume Allowed` • If the module considered includes any dripboard areas, Maximum Between First use both the maximum frypot area and dimension listed Maximum Pipe Nozzle and in the"Design Chart", and the maximum overall area Tank Flow Volume Last Nozzle and dimension listed in the"Design Chart" Size Numbers (milliliters) (milliliters) 1.6 Gallon 5 1500 600 3. None of the maximum dimensions may be exceeded.If PCL-160 either the maximum frypot or the overall sizes are 3.0 Gallon 10 1910 1125 exceeded,the area divided into modules will need to be PCL-300 redefined with the possibility of an additional nozzle. 4.6 Gallon 14 3400 3000 PCL-460 ►Design Chart 4.6 Gallon 15 2600 2000 PCL-460 Longest Vat Coverage 6.0 Gallon 19 4215 1688 Side Coverage with Drip PCL-600 per side Option 1 27 3/4 in. 324 in2 500 in2 6.0 Gallon 20 3465 1313 " (70.5 cm) (2090 cm2) (3226 cm2) I PCL-600 per side Option 2 25 3/8 in. 371 in2 495 in2 ►*All piping, including nozzle drops, must be included in the (64.5 cm) (2394 cm2) (3194 cm2) piping calculations. Minimum Pipe Volumes for a Fryer, Range,and Wok Cylinder Size Entire System At or before appliance PCL 160 239 ml-1 Flow Pt 180 ml-1 Flow Pt PCL 300 300 ml-4 Flow Pts 239 ml-2 Flow Pts PCL 460 660 ml- 10 Flow Pts 180 ml-2 Flow Pts PCL 600 960 ml-14 Flow Pts 120 ml-2 Flow Pts ULEX 3830 December 1,2009