Thermon TraceNet TCM 18 - Manual (Page 16)

4
Field and Panel Wiring
For a successful installation of a TraceNet TC Series heat tracing control and moni-
toring panel, a number of equally critical parts of the system must be installed prop-
erly. Areas requiring close attention are the heat trace and insulation, the RTD
temperature sensor installation, the distribution of the field RTD and power wiring,
and the installation and routing of wiring inside the TraceNet panel.
Note: The heat tracing system installation shall be in accordance with the electrical
area classification requirements as well as shall conform to the latest requirements
as detailed in applicable heat tracing standards, the local Electrical Code and plant
standard practices. Where conflicts arise, contact the project engineer for resolution.
Heat Trace and Insulation Installation
All heat trace circuits and insulation shall be installed in accordance with project in-
stallation details provided. In addition, refer to the Electric Heat Tracing Maintenance
and Troubleshooting Guide (Thermon Form No. 20745) for general procedures and
installation tips.
RTD Installation and Wiring
RTD control sensors should generally be installed on the process lines or in ambient
(where ambient sensing is applied) in a location that is most representative of the
entire heat trace circuit. In general, it is recommended that the sensors not be lo-
cated at heat sinks such as pipe supports, pumps, and valves as the control system
response needs to be based on the majority of the process line. The RTD control
sensor location on the process piping should follow the guidelines detailed in Figure
6.
PN 50316_0514 12