Description; Installation Instructions - nVent RAYCHEM Elexant 450c Bedienungsanleitung

Important Safeguards and Warnings
Warning: Fire and Shock Hazard
nVent RAYCHEM Elexant Systems must be installed correctly to ensure
proper operation and to prevent shock and fire. Read these important
warnings and carefully follow all the installation instructions.
Follow the guidelines included in this document in order to minimize the
risk of electrical shock or fire and to comply with nVent's requirements as
well as agency and national electrical codes.

1. DESCRIPTION

nVent RAYCHEM Elexant 450c (PCN 1244-021970) is an electronic
control thermostat with colour touch display, advanced alarm facilities
and the capability of switching 1 (standard version) or 2 (2
zone: optional) independent heating zones via external contactors.
The unit is to be mounted in panels with DIN-rail for pipe freeze
protection and grease line temperature maintenance of nVent RAYCHEM
pipe freeze protection heating cables.
Heating cables can be controlled (switched ON/OFF) via a suitably rated
contactor.
The Elexant 450c-Modbus version (PCN 1244-022623) allows flexible
Modbus connectivity for remote monitoring, configuration, and
integration in a Building Management System (BMS).

2. INSTALLATION INSTRUCTIONS

Installation and all wiring must be in accordance with applicable
regulations. The device must be installed in non-hazardous areas only.
Electrical connections are to be made by qualified electricians.
Attention: mistakes made when connecting the device can cause
damage to the control unit. nVent is not liable for any damage caused by
faulty connection and/or incorrect handling.
• Before working on the device, switch off the power supply.
• The device may only be connected and serviced by authorised,
trained personnel.
• The device is designed to be connected to fixed cables only.
• When installing the device, make sure that high-voltage cables, such
as the main supply and extensions do not come into contact with
low-voltage cables such as sensor cables.
• Ensure the installation is made in accordance with EN60730-1.
• Local standards for electrical connection must be observed.
• If the device does not work, please first check all connections and the
main power supply.
2.1 Mounting of the enclosure
This device must be installed in a housing and snapped onto a DIN
rail (DIN EN 50022-35). It is designed to be mounted in electrical
panels. nVent provides a wide range of panels as standard or
tailor-made products.
2.2 Sensor installations
Location of the sensor: on pipe as pipe line sensor - see picture D1
• as indicated in the system design documentation
• not on valves, flanges, supports, pumps or other heat sinks
• at the top of the pipe for thermally sensitive pipe contents (A)
• on lower quadrant of pipe 90° for single heating cable (B)
• on lower quadrant of pipe centrally between the heating cables if
there are two or more
heating
nd
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