Emerson UVU-140A-AR user manual General Wiring Requirements

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General Wiring Requirements

NOTE:

The wiring procedures in this manual are intended to ensure proper functioning of the device under normal conditions. However, due to the many variations in wiring codes and regulations, total compliance to these ordinances cannot be guaranteed. Be certain that all wiring complies with applicable regulations that relate to the installation of electrical equipment in a hazardous area. If in doubt, consult a qualified official before wiring the system.

Shielded cable is highly recommended for power input and signal wires to protect against interference caused by extraneous electrical 'noise'. Recommended detector cable is four conductor, shielded, 18 AWG rated 300V. If the wiring cable is installed in conduit, the conduit must not be used for wiring to other electrical equipment. Detectors can be located up to 2000 feet (600 metres) from the controller if 16 AWG shielded conductor is used.

The UVU-140-A & UVU-140-AR are factory sealed complete with four feet of four conductor,

18 AWG cable rated 300V. No seal is required.

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Contents UVU-140A and UVU-140-AR Unitized Ultraviolet Fire Detector Page Table of Contents Page Features Technical InformationIntroduction Spectral Sensitivity RangeSpecifications Operating Voltage Range 24Vdc nominal 10.5 to 32VdcApplications Response TimeInstallation What’s in the packageMounting the Detector False Alarms Position and Density of DetectorsDetector with Swivel Mount Swivel Mount General Wiring Requirements Wiring Diagram for UVU-140-A If the 4-20 mA signal is Detector Settings Coil and Relay SettingsSystem Sensitivity Start up Procedure Check Out ProcedureStart UP and Test Automatic vi TestManual Check Procedure Manual vi Test ProcedureTest Procedures Normal Operation Normal OperationFire Condition Current & Relay Output ConditionsMaintenance Routine MaintenanceTroubleshooting Cleaning Viewing Window and ReflectorDevice Repair and Return B lis h ed in Accordance with E1A standard Appendix B Common Ultra-Violet Absorbing Gases Appendix C Wire Resistance In Ohms