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Chapter 3 – System Design <br /> Page 3 -6 <br /> REV. 3 <br /> PCI -70ABC with 6 nozzles <br /> • <br /> NOTE: <br /> CYLINDER 1. These limitations apply to PCI -70ABC using six nozzles <br /> (2 -N -SCR, 4 N -OTF, or 6 N -OTF). <br /> ■1 1. 1■ 2. System piping must be balanced. Balanced piping is <br /> that in which the difference between the shortest actu- <br /> al pipe length from T1 to nozzle and the longest actu- <br /> al pipe length from T1 to nozzle does not exceed 10% <br /> of the longest actual pipe length from T1 to nozzle. T2 <br /> T2 —► T2 to nozzle on the same branch must not exceed 10% <br /> of each other. The number and type of fittings for all <br /> T1 last tee to nozzle sections must be equal <br /> 3. A Main /Reserve Swing Check Valve, Part No. 417788, <br /> may be located between the cylinder and T1. <br /> •1 1• l• 4. When using the 2 -N -SCR, 4 -N -OTF nozzle combination, <br /> t 00493,PC NOZZLE the 2 - - SCRs must be located on the two nozzle side of <br /> T3 the piping layout. <br /> Maximum Length Elbows <br /> Cylinder Size Nozzle Quantity Nozzle Type Piping Section Size Maximum Maximum <br /> PCI -70ABC 6 N -SCR, N -OTF Cylinder to T1 1 in. 18 ft. (5.5 m) 3 <br /> T1 to T2 (4 Nozzle Side) 1 in. 14 ft. (4.3 m) 1 <br /> T2 to T3 3/4 in. 4 ft. (1.2 m) 0 <br /> T3 to Nozzle 3/4 in. 6 ft. (1.8 m) 2 <br /> T1 to T2 (2 Nozzle Side) 1 in. 14 ft. (4.3 m) 2 <br /> ► T2 to Nozzle 3/4 in. 6 ft. (1.8 m) 2 <br /> PCI -70ABC with 8 nozzles <br /> ell NOTE: <br /> CYLINDER 1. These limitations apply to PCI -70ABC using eight <br /> nozzles (2 N -SCR, 2 N -PLU, and 4 N -OTF). <br /> ■l I■ of I■ 2. System piping must be balanced. Balanced pip- <br /> ing is that in which the difference between the <br /> shortest actual pipe length from T1 to nozzle and <br /> the longest actual pipe length from T1 to nozzle <br /> does not exceed 10% of the longest actual pipe <br /> 1 f— T2 length from T1 to nozzle. T2 to nozzle on the <br /> same branch must not exceed 10% of each <br /> Ti other. The number and type of fittings for all last <br /> tee to nozzle sections must be equal <br /> 3. A Main /Reserve Swing Check Valve, Part No. <br /> •i I• •I I• NOZZLE 417788, may be located between the cylinder and <br /> 003019PC Ti . <br /> T3 <br /> Maximum Length Elbows <br /> Cylinder Size Nozzle Quantity Nozzle Type Piping Section Size Maximum Maximum <br /> PCI-70ABC 8 Two N -SCR, Two N -PLU, Cylinder to T1 1 in. 18 ft. (5.5 m) 3 <br /> and Four N -OTF <br /> T1 to T2 1 in. 10 ft. (3.1 m) 1 <br /> T2 to T3 3/4 in. 4 ft. (1.2 m) 0 <br /> ► T3 to Nozzle 3/4 in. 6 ft. (1.8 m) 2 <br /> ULEX 3437 CEx732 <br /> September 1, 2006 <br />