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Obstruction to Water Distribution Locations of sprinklers must follow the obstruction rules of NFPA 13, 13D and 13R for Residential Sprinklers. General Service Conditions The Model RC-RES must only be utilized in WET PIPE sprinkler systems. Heat Source Criteria Refer to NFPA 13D, 13R or 13 for the requirements relating to the prevention of possible activation of the Heat Responsive Element of Model RC-RES, due to the exposure of a heat source other than an actual fire. Available Sprinkler Temperature Sprinkler Nominal Maximum Ambient Ceiling Temperature Rating of the Classification Temperature Rating Temperature Cover Plate Assembly Ordinary 1620F (72-C) 100°F (38°C) 140°F (60°C) Intermediate 205°F (96°C) 150°F (66°C) 162°F (72°C) Precautionary Warnings for Corrosive Environments Model RC-RES sprinklers should not be installed where they may be subjected to a corrosive environment including the following: 1. Chlorine ion and Chloride environment Stress corrosion cracking may be caused by exposure to environments with Chlorine ion and Chloride. Exposure to this environment may result in sprinklers operating under Non-Fire conditions or Not Operating when exposed to an actual fire. 2. Sprinkler system piping with Copper Sprinkler systems should be constructed in compliance with the applicable standards and the requirements for copper piping when copper piping is used in the sprinkler system. (Reference standards NFPA 13,ASTM B813, B828, and CDA(Copper Development Association)—Solder Joint) All residual flux must be removed from the interior and exterior of the copper piping by thoroughly flushing before installation of the Sprinkler Heads. Otherwise, residues of flux may cause corrosion and/or leakage in the sprinkler system. Hydraulic Design Criteria The minimum required sprinkler flow rates for systems designed to NFPA 13D or 13R are given in Table A as a function of temperature rating and the maximum allowable coverage area.The sprinkler flow rate is the minimum required discharge from the most hydraulically demanding sprinkler from each of the total number of"design sprinklers"as specified in NFPA 13D or 13R. For systems designed to NFPA 13, the number of designed sprinklers is to be the four most hydraulically demanding sprinklers. The minimum required discharge from each of the four sprinklers is to be the greater of the following: • The flow rates given in Table A for NFPA 13D and 13R as a function of temperature rating and maximum allowable coverage area. • A minimum discharge of 0.1GPM/sq.ft. [4.07LPM/sq.m] over the"design area"comprised of the four most hydraulically demanding sprinklers for the actual coverage area being protected by the four sprinklers. 16 www.senjusprinkler.com Page 4 of 8 Document No.U085168• 02-08-2021