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General Piping Requirements 1. Spill pIpIng and straIght pIpIng are both aI/owed on a PCL-300 and PCL-46D syslem. 2. PCL-600 sysfems must Use spl/[ piping only, w/[h no nozzle localed before the spill, and with a max/mum of 14 flow points per sIde. 1/2/n. mInI- mum piping must be used up to the nrst spill. 3. Maximum volume fDr 1/4 In. pIpe between a nozzle and the preceding tee Is 410 mls. 4. Maximum flow numbers for 1/4 In. pIpe Is 6. 5. Maximum number of elbows between a nDzzle and the precedIng lee Is 5. 6. Maximum of 25 elbows are allowed In Ihe tofBI pIpIng system. 7. Maximum difference In eleva[lon betweBn Ihe lank ou[let and any nozzle, or the tank ou[let and [he hIghest or lowast horizontal pipe run, /5 10 ft. (3.1 m). 8. No traps ara allowad In the pIpIng network. 9. Pipa langths are measured from center 10 center of fi((/ngs. 10. The internal equivalent length volume of fillings does nol have to be consldared as part of (he IDlal pIpe volume. 11 When utilizIng dlffarent sIze pipe In the system, the "argest size must start first and (he addillonal pIpe mus! decraasa as 11 approaches the nozzle. 12. Elbow(s) or swivel adaplorB IDea led at the nDzz/es do nol have to be counted In Ihe 25 BlbDW maxI- mum requirement. 13. Reducing bushIngs are allowed when reducIng tD a smaller pipe size. 14. Addll/onal piping re--1ulremenls when profec[lng a range, wok, or a fryer: PCl-300 - MinImum of 300 ml and four (4) now numbers requIred In tolal system. Of Ihal mini- mum, 239 ml and (wo (2) now numbers mus( be ulillzed at or before Ihe range, wok, or fryer. PCL-460 - MInimum of 660 ml and len (10) now numbers required In tDtal syslem. Of lhat mini- mum, 180 ml and Iwo (2) nDW numbers must be utilized at or before (he renge, wok, or fryBr. PCl-600 - MinImum of 960 ml and fourteen (14) flow number's requIred In lolal sysfem. Of (ha( minImum, 120 ml and 2 flow numbers must be ullllzed at or before the range, wok, or fryer. Chapter 3 - System Design Page 3-15 REV. 2 SUPPLY PIPE MUST ENTER BULL SIDE DF TEE SPLIT PIPING (REQUIREO ON PCL600 SYSTEMS) 0011 tIl IPC Figure 3-18. Design Steps Step No.1 Determine number of flow points required based on duel Blze, plenum size and type, and size of all appliances. Step No.2 Delermlne size and quantlly of lanks required. Refar 10 (he chart In "General PipIng RequlremanlB" (0 determine the maximum amount of flow numbers allowed per each lank size. Step No.3 LBYOUt nDzzles. pIping diagram, and tank loca- lion. Delermlne pipe lengths as accurale as possible. Make certaIn maximum number of elbDWs 15 nol exceeded. Note: Tanks cannot be manIfolded together. Each tank must have a separate pipIng network. Step No.4 Add alllhe lenglhs of each pipe run and mulll- ply by (he mls.lft. listed In the Volume Chart. If lhe sum falls within the acceptable range noled In general PipIng Requlramenfs. that pipe size 15 acceptable. If the calculaled volume 15 100 large, recalculale (he volume uBlng the mJ per foot of a smaller pipe size. PIpe sizes can be mIxed but Rule No. 11 of the General Piping Requlremenls must be followed. Step No.5 Check lD make certain minimum volumes, maxi- mum vDlumes and maxImum volume allowed belween flrsl nozzle and last nozzle is nof exceeded (Tank Chart). Check aach rule In "General PipIng Requirement" to make certaIn none heve been exceeded. If any requirement 15 exceeded, change to a different pipe size and recalculate. PN551274(2) ULEX 3830 April 1, 2004