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DISTRIBUTION PIPING REQUIREMENTS (Continued) Distribution Piping Requirements - 9,0 Gallon System . This optional configuration consists only of three 3-gallon tanks, all . pressurized from a single double-tank nitrogen cartridge with . expellant gas hoses connected as shown in Figure 88. Tanks No. 1 and NO.2 must be connected directly to the regulator with sepa- rate expellant gas hoses and Tank No. 3 must be connected to . Tank No.2 with a third expellant gas hose as shown in Rgure 88. Each tank must be connected to an independent distribution pip- . ing network as shown in Figure 88. Distribution piping require- ments for each network must be as follows: 1. The maximum leng1h between the start of the first branch line and the start of the last branch line must not exceed 24 ft. (7.3 m). When the supply line is split, the combined total of both legs of the supply line (from the start of the first branch line to the start of the last branch line) must not exceed 24 ft. (7.3 m). See Figure 84. 2. The total length of all branch lines must not exceed 36 ft. (10.9 m). See Figure 84. 3. Use a 318 in. union to connect the tank adaptor to the 3/8 in. supply line. 4. A maximum of two nozzles are allowed per duct branch line. 5. When using this 9.0 gallon system configuration, no mani- folding of distribution piping is allowed. 6. When an ANSUL AUTOMAN Regulated Release is utilized in this configuration, additional regulator actuators cannot be used. . 7. Only 3 gallon tanks can be utilized in this configuration. I 8. The requirements of the following table must not be exceeded . for each 3 gallon tank: . . Requirements Pipe Size Maximum Length Supply Line 3/8 in. 40 ft. (12.2 m) 6 ft. (1 .8 m) 9 Duct Branch Line 3/8 in. 8 ft. (2.4 m) 4 ft. (1.2 m) 4 Maximum Rise Maximum 900 Elbows Maximum Tees Maximum Flow Numbers 11* 2 4 SECTION IV - SYSTEM DESIGN UL EX. 3470 ULC CEx747 Page 4-49 10-1-02 REV. 2 ~~ r~~ F~~ D D 3.0 GALLON TANK NO.3 . "I'M> TANK ENCLOSURE ASSEMBLY PART NQ 419604 (INCLUOES (2) HOSES AND (2) GROMMETS) 3.0 GALLON TANK NO.2 3 GALLON REGULATED DOUBLE TANK NITROGEN RELEASE ASSEMBLY, I CARTRIDGE OR OR 3 GALLON LT-A-l01-30 CARTRIDGE REGULATED ACTUATOR (REGULATED ACTlWOR ASSEMBLY ONLY) FIGURE 88 0??oo7 , Appliance I Branch Line 3/8 in. I 12 ft. (3.7 m) 2 ft. (.6 m) 6 4 4 I . Plenum Branch Line 3/8 in. 4 ft. (1.2 m) 2 ft. (.6 m) 4 2 2 'Exceptions: 1. T_ (12) how numbers are allowed in any tank not containing two-flow appliance nozzles. and/or, a 1 N nozzla for wok or griddle protection. and/or, a 1 F nozzle for range protec- tion, and/or, a 3N nozzle for fryer protection. 2. T_ (12) flow numbers are allowed with any one tank using only two-flow appliance nozzles. 3. T_ (12) flow numbers ere allowed with any one tank using only three.flow appliance nozzles. SpeciallMtructlons: J 1. When four (4) Dean Industries GTI Gas Fryers are prolected at low proximity as shown in Figure 58 on Page 4-32, the discharge piping must be shown in Figure 59 on Page 4-32. 2. For certain McDonald's applications, 11.5 flow numbers are allowed when using a combination of one (1) 2W duct nozzle, one (1) 1/2N e1ectrostallc precipitator nozzle, one (1) 1N plenum nozzle, and four (4) two-flow appliance nozzles. Contact Ansul Applications Engineering Department for additional information. . . .