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