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SECTION IV — SYSTEM DESIGN <br /> UL EX.3470 ULC CEx747 Page 4-47 <br /> 4-1-06 REV.4 <br /> DISTRIBUTION PIPING REQUIREMENTS(Continued) <br /> Supply and Branch Line Identification(Continued) PLENUM BRANCH LINE <br /> NOTICE The Plenum Branch Line is defined as the length of pipe which <br /> Branch lines cannot start ahead of a supply line runs from the supply line to the plenum nozzle(s).This includes all <br /> tee. branch line fittings as well as the tee or elbow used to start the <br /> DUCT BRANCH LINE ►branch line.See Figures 86 and 89. <br /> The Duct Branch Line is defined as the length of pipe which runs 1.4 <br /> from the supply line to the duct nozzle(s).This includes all branch <br /> line fittings as well as the tee or elbow used to start the branch line. <br /> See Figures 87 and 88. <br /> I PLENUM BRANCH LINE <br /> (TEE INCLUDED) <br /> DUCT BRANCH LINE <br /> (ELBOW INCLUDED) I <br /> PLENUM BRANCH LINE <br /> I (TEE INCLUDED) <br /> i <br /> /Q DUCT BRANCH LINE <br /> (TEE INCLUDED) <br /> i, <br /> i <br /> i <br /> i <br /> 1 ,d <br /> ` FIGURE 89 <br /> DUCT BRANCH LINE <br /> oo0782 <br /> (TEES INCLUDED) APPLIANCE BRANCH LINE <br /> The Appliance Branch Line is defined as the length of pipe which <br /> 1 runs from the supply line to the appliance nozzle(s).This includes <br /> J---fall branch line fittings as well as the tee or elbow used to start the <br /> branch line.See Figures 87 and 90. <br /> i <br /> I <br /> I <br /> I <br /> APPLIANCE BRANCH LINES <br /> (TEES INCLUDED) <br /> FIGURE 88 <br /> 000781 <br /> FIGURE 90 <br /> ODOM <br />