Temperature Maintenance

By selecting the proper heat tracing cable and controls, a commercial temperature maintenance system can maintain the temperature of fluid in a pipe to a desired level, over a broad range of temperatures, as dictated by the particular application.

Temperature Maintenance Heat Trace System

nVent Thermal Management uses heat trace cables to maintain the temperature of fluid in pipes. Our temperature maintenance solution is ideal for commercial applications that require fluids to be heated above room temperature, such as:


  • Critical Safety Lines (Tepid water line) — temperature sensitive water lines such as eyewash stations and safety showers that must be maintained from 60°F to 100°F as specified under the 2009 ANSI standard.
  • Specialized Hot Water Supply — hot water supply to commercial laundries or kitchens that require that the water be heated above the domestic hot water maintenance temperature of 140°F maximum. Also for heating water in pipes that are located in areas that are not temperature controlled (outdoors, garages  and attics)

nVent Thermal Management offers XL-ERATE , the on-line design tool, to assist in selecting the correct heat trace cable and control system to suit your application requirements.

Reliable, Efficient Temperature Control

nVent RAYCHEM temperature systems maintain the temperature of fluid in your pipe or tank. XL-Trace heat trace cables are based on proven self-regulating technologies that have offered years of worry free performance.

02_TemperatureMaintenance_cm_thumbnail.jpg nVent Thermal Management is the world leader in heat tracing solutions. We have sold over one billion feet of RAYCHEM self-regulating heat trace cable and are known for our technical leadership and expertise in polymer science and radiation cross-linking.  And, we offer the most advanced line of heat trace control and monitoring systems. The Proportional Ambient Sensing Control (PASC) built into the RAYCHEM controllers can save up to 30% of the energy used by conventional ambient control systems.
The RAYCHEM XL-Trace system comes in three different power levels to best suit the application. We have solutions for tepid water, and condensate return line heating and other applications requiring temperature control of water.  The RAYCHEM controllers provide multi-point temperature measurement, for temperature sensitive applications.

Simple Design

RAYCHEM XL-Trace self-regulating heat trace cables can be installed on metal or plastic pipes and can be wrapped around valves and heat sinks. They can be installed above ground or on insulated buried pipes without over- or under-heating.  XL-ERATE, the on-line design tool, simplifies the design process.  The RayClic connection kits provide time savings assembly.


The RAYCHEM controllers have integrated 30mA ground-fault protection to satisfy national electrical code requirements.  For further reliability, the C910 and ACS-30 controller have an automatic self-test feature which ensures that the ground-fault circuitry is intact.

Cost Savings

Installing RAYCHEM XL-Trace on greasy waste disposal lines eliminates FOG congealing on the interior of the piping, and avoids costly drain cleaning charges.

Self-Regulating Technology

nVent RAYCHEM self-regulating electric heat trace cables automatically adjust their power output to compensate for temperature changes. Heat is generated as electric current passes through the conductive polymer core between the conductors. As the temperature drops, the number of electrical paths through the core increases and more heat is produced. Conversely, as the temperature rises, the core has fewer electrical paths and less heat is produced.

Self regulating

RAYCHEM HWAT self‐regulating heat trace cables:

  • Are ideally suited for temperature sensitive installations
  • Have a cross-linked, conductive polymer core forming a parallel circuit
  • Have a self-regulating core that limits the maximum pipe temperature that the heating cables will maintain, making them compatible with both metal and plastic pipes

RAYCHEM XL‐Trace heat trace cables:

  • Can be used for metal or plastic pipes
  • Have a cross-linked, conductive polymer core forming a parallel circuit
  • Offer different power output levels to suit the needs of each application
  • Are protected by a tinned-copper braid encased in a durable outer jacket to withstand mechanical abuse during installation
  • Have a fluoropolymer outer jacket that is ideally suited for flow maintenance and buried pipe applications where increased durability and chemical resistance is required

Advanced Control Systems

nVent Thermal Management offers two advanced control systems for temperature maintenance system: the RAYCHEM C910 and the RAYCHEM ACS-30.  Both electronic controllers are specifically designed for use with the RAYCHEM XL-Trace cables and allow for energy savings.

  • Is ideal for smaller buildings with limited hot water distribution systems
  • Controls a single heating cable circuit and

  • Is ideal for large freeze protection systems or multiple heat-tracing applications
  • Can control up to 260 heating cable circuits

Both controllers provide:

  • Multiple temperature sensors
  • Ground-fault protection
  • Monitoring
  • Alarm contacts
  • Building Management System (BMS) integration

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