nVent RAYCHEM Elexant 3500i Electronic Thermostat Installation Guide

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nVent RAYCHEM Elexant 3500i  

Installation Instructions  

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General	Details
Name	nVent RAYCHEM Elexant 3500i Electronic Thermostat Installation Guide
Make	nVent RAYCHEM
Language	English
Filetype	PDF (Download)
File size	0.26 MB

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• ALL THERMOSTAT INSTRUCTIONS & USER MANUALS
• nVent RAYCHEM

nVent RAYCHEM Elexant 3500i Electronic Thermostat Installation Guide Overview

Summary of Contents

• Page 1: Installation instructions
• Page 2: Elexant 3500i enclosure dimensions Elexant 3500i Pipe Mount Electronic Thermostat Elexant 3500i Wall Mount Electronic Thermostat
• Page 3: Hazardous area approvals nVent RAYCHEM Elexant 3500 Class I, Division 2, Group A, B, C, D T4 Type 4X Class II, Division 2 Group F, G
• Page 4: Please read all instructional literature carefully and thoroughly before starting. The information contained in this document is subject to change without notice. Keep the operating instructions in a place which is always accessible to all users. Specific conditions of use include proper cable entry and insulation requirements. The maximum permitted current of the alarm contacts is 2 A, and the maximum permitted voltage is 277 Vac. nVent RAYCHEM Elexant 3500i thermostats are used for temperature control of electrical heating cables in industrial environments. The Elexant 3500i consists of a temperature controller but can alternatively be programmed to act as a temperature limiter. During operation, do not leave this Instruction Manual or other objects inside the enclosure. Use the temperature controller or limiter only for its intended purpose and operate it only in clean, undamaged condition. The Elexant 3500i electronic thermostats are Type 4X rated connection kits designed for use with nVent RAYCHEM industrial heating cables.
• Page 5: Technical data Class I, Division 2, Group A, B, C, D, T4 Class II, Division 2, Group F and G Ambient operating temperature from -55°C to +60°C Protection type 4X, IP 66 Power supply 100 to 277 Vac +/- 10%, 47-63 Hz Maximum current 32 A @ 40°C, de-rated to 24 A @ 50°C and 16 A @ 60°C Contact lifetime > 250K operations at 32 A / 277 VAC Contact rated 277 Vac, 2 A, 47-63 Hz, CAT II Alarm output relay programmable to open, close or toggle in case of alarm Electrical safety EN 61010-1, Category III, Pollution degree 2
• Page 6: Installation guidelines emphasize adherence to safety laws and engineering practices. Work on thermostats should only be performed when de-energized. Branch circuit protection and disconnection devices must be easily accessible and clearly identified. Elexant 3500i units can function as temperature controllers or safety temperature limiters and can be installed in various positions. The units can be mounted directly on pipes with a maximum temperature of 205°C (401°F) and should not exceed an ambient temperature of 60°C (140°F). For stability, the pipe stand should be secured with two pipe straps. Cables used at ambient temperatures above 45°C (113°F) should have a temperature rating of at least 90°C (194°F). Conduit hubs must also have a temperature rating of 90°C (194°F) or higher and be Type 4X. Separate conduit hubs are required for RTD, communications, and alarm relay wiring from high voltage power wiring. Only approved conduit hubs certified for the intended area of use should be utilized. Installation instructions from conduit hub manufacturers must be strictly followed.
• Page 7: The purchaser should make the manufacturer aware of any external effects or aggressive substances that the equipment may be exposed to. The cable glands shall only be used for fixed installations; the cables must be fixed to prevent pulling or twisting. Elexant 3500i units must be earthed in accordance with the local wiring regulations. Elexant 3500i units must be installed in accordance with local wiring regulations. Figure 3 shows the electrical connection diagram of the Elexant 3500i electronic thermostat. The optional second Pt100 temperature sensor for the control unit is omitted for clarity.
• Page 8: - Electrical connection diagram for Elexant 3500i. - Temperature sensor specifications. - Ground lug information. - Connection details for L1, N/L2, and PE. - Overview of the wiring symbols used. - Explanation of sensor types such as PT100. - Importance of proper grounding in electrical connections. - Reference to nVent.com for additional information. - Visual representation of connections in the diagram. - Key components involved in the electrical setup.
• Page 9: Configuration The Elexant 3500i electronic thermostats can be configured in a number of ways. The communicating, current sensing, and ground fault detecting variants can be configured locally by means of a handheld programming device using the Elexant Connect application or from a central location using the Touch 1500 or nVent RAYCHEM Supervisor software. After programming, all settings are permanently stored in the nonvolatile memory of the Elexant 3500i. The Standard and Alarm variants of the Elexant 3500i can be programmed via the digital switches and rotary dial. The first dipswitch is to set temperature sensor failure behavior. By default, the Elexant 3500i is shipped with a fail off setting. The second dipswitch is used to switch between Celsius and Fahrenheit. The rotary dials are used to select a setpoint temperature. The Elexant 3500i monitors the sensor temperature and compares it to the setpoint temperature. If the control temperature falls below the control temperature setpoint, the output is turned on.
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• Page 12: ©2024 nVent. All nVent marks and logos are owned or licensed by nVent Services GmbH or its affiliates. All other trademarks are the property of their respective owners. nVent reserves the right to change specifications without notice. RAYCHEM-IM-N00411-SmartThermostat-EN-2407