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OPERATION In case of fire, the solder component that holds together the Cover Plate and the Retainer melts. Then the Cover Plate is released at once.As a result, the Deflector drops down to the intended position.Two Heat Collectors are exposed to fire, and when sufficient heat from the fire is reached, internal components of the sprinkler fall apart. This leads to the water flow to be distributed on the affected fire area. (Ref. Figure 2) Normal Condition Cover Plate Operation Sprinkler Operation Water Discharge Figure 2:Operation Process (For illustrative purposes only) DESIGN CRITERIA The herein stated rules for use and installation of Model RC-RES are provided by the manufacturer and must be strictly implemented for safe and full results. Notes Residential Fire Sprinkler Systems should only be designed and installed by individuals who are completely familiar with automatic sprinkler system design, installation procedures,and techniques. Several criteria may apply to the installation and usage of each sprinkler. Consequently, it is recommended that the sprinkler system designer review and develop a working understanding of the complete list of criteria prior to initiating the design of the sprinkler system. Questions concerning sprinkler installation and usage criteria,which are not covered by the following instructions, should be submitted to your contracted company. Include sketches and technical details,as appropriate. In some instances,the requirements of this document may concern specifications which are more stringent, and which take precedence over those specified in NFPA 13, 13D, 13R,or by the authority having jurisdiction. The Model RC-RES must not be used in applications where the air pressure above the ceiling is greater than that below. Inspect all sprinklers after installation to ensure that both the gap between the cover plate, ceiling and the 6 slots in the cup are open and free from any air flow impediment. The spray from the sprinkler is distributed radially outward and downward from the sprinkler deflector. Consequently, the sprinklers must be located such that there will be no blind spaces shielded from spray by partitions,room dividers,overhangs or other parts of the dwelling structure. The number of sprinklers within each compartment(as defined by NFPA 131D,13R,or 13)must be kept as few as possible while observing all guidelines relating to obstructions and spacing. Use only the Cover Plate provided for the Model RC-RES. The sprinkler must be secured in place by firmly fastening the sprinkler system piping to the structure. If the sprinkler is not properly secured in position, reaction forces resulting from sprinkler operation could alter its orientation and its water distribution pattern. 40 www.senjusprinkler.com Page 3 of 8 Document No.U085168• 02-08-2021