Series C400, C500, and LFC500 each include a flood sensor on therelief valve to detect excessive discharge and trigger notification ofpotential flood events.NOTICEAn add-on connection kit is required to activate the flood sensor.Without the connection kit, the sensor is a passive componentthat does not communicate with any other device. (A retrofitsensor connection kit is also available for existing installations. See“Add-on and Retrofit Sensor Connection Kits,” for ordering details.)RP/IS-A-C400/C500C400-OSY-FSInstallation, Maintenance, and Repair ManualColt™ Series C400, C500, LFC500Reduced Pressure Zone AssembliesReduced Pressure Detector Assemblies21⁄2" – 10"WARNING!Read this Manual BEFORE using this equipment.Failure to read and follow all safety and use informationcan result in death, serious personal injury, propertydamage, or damage to the equipment.Keep this Manual for future reference.Local building or plumbing codes may require modificationsto the information provided. You are required to consultthe local building and plumbing codes prior to instal-lation. If the information provided here is not consistentwith local building or plumbing codes, the local codesshould be followed. This product must be installed bya licensed contractor in accordance with local codesand ordinances.WARNING!Need for Periodic Inspection/Maintenance: This productmust be tested periodically in compliance with local codes,but at least once per year or more as service conditions war-rant. All products must be retested once maintenance hasbeen performed. Corrosive water conditions and/or unauthorizedadjustments or repair could render the product ineffectivefor the service intended. Regular checking and cleaning ofthe product’s internal and external components helps assuremaximum life and proper product function.WARNING!This device must be tested periodically in compliance withlocal codes, but at least once per year or more as serviceconditions warrant. If installed on a fire sprinkler system, allmechanical checks, such as alarm checks and backflowpreventers, should be flow tested and inspected internally inaccordance with NFPA 13 and NFPA 25.WARNING!NOTICEFor Australia and New Zealand, line strainers should be installedbetween the upstream shutoff valve and the inlet of the backflowpreventer.NOTICEUse of the flood sensor does not replace the need to complywith all required instructions, codes, and regulations relatedto installation, operation, and maintenance of this product,including the need to provide proper drainage in the event ofa discharge.Watts® is not responsible for the failure of alerts due toconnectivity or power issues.TestingFor field testing procedure, download IS-A-ATG-1 at watts.com.For technical assistance, contact your local Ames representative.Do not impede or prevent sleeve movement by installing risercradle clamps or other obstructive elements on or around thesleeve. Sleeve movement is required to service the backflow.WARNING!