Chromalox IntelliTRACE ITC-FS Digital Heat Trace Controller 1 & 2 Circuit


  • 1 & 2 Circuit Models
  • 22 Amps per Circuit
  • SSR Control
  • 100– 277 VAC, 50/60 Hz
  • UL approved for Freeze Protection of Fire Sprinkler Mains and Branch Lines (VGNJ)
  • Soft Start Feature
  • Operating Temperature: -40˚F to 104˚F (-40˚C to 40˚C)
  • Modbus RTU/RS485, RS422 & TCP/Ethernet
  • 10” x 8” x 6” (26cm x 21cm x 15cm) NEMA4X FGWall Mount Enclosure
  • High-Resolution Color TFT Display
  • LEDIndication for Power, Load &Alarm per Circuit
  • Front Panel Capacitive Touch Switches
  • PID, On/Off or Manual Control Modes
  • 2 RTD’s per circuit
  • 1 RTD for ambient Control
  • 1 RTD for Alarms
  • Full Monitoring & Alarms
  • High / Low Temperature & Current, GFEP & Sensor Failure
  • Programmable Duty Cycle On Sensor Failure
  • Audible Alarm Annunciation
  • AC & DCAlarms
  • Password Protected Security Levels
  • UL/cUL

The Chromalox IntelliTRACE ITC-FS is designed for Freeze Protection of Fire Sprinkler Mains and Branch Lines. The ITC-FS is offered in either a single circuit or an independently controlled and monitored dual circuit platform. They provide a unique, industry-leading combination of heating capacity, application flexibility, and technology. You must employ two RTD sensors to control both circuits and alarms, use one RTD to control both circuits and individual RTD’s for alarms, or two individual RTD’s per circuit to control each circuit independently and alarms independently. This provides the owner with flexibility and redundancy to help meet their ever-varying demands.

The ITC-FS employs a soft start feature that uses a proprietary software algorithm which eliminates the inherent self-regulating in-rush current, resulting in less nuisance tripping at cold temperatures. All process conditions may be monitored and managed both locally and remotely. All process variables, communication and alarm settings, and security codes are user-adjustable via simple page menu navigation. In terms of system supervision, the ITC-FS controller monitors the temperature, current load, and ground fault equipment protection leakage current (GFEP). Additionally, the alarms on the ITC-FS consist of high and low temperature, high and low current, high GFEP current, and sensor failure. For GFEP see the next page for specifics. Should the ITC-FS unit realize a failed sensor, the controller automatically switches into a user-adjustable manual output duty cycle. To eliminate abrupt current spikes, the Chromalox ITC-FS employs bumpless transfer power switching when switching over from either manual or auto mode.

The ITC-FS unit is housed in a compact wall-mountable, NEMA 4X FG or optional 316 SS enclosure and it features a high-resolution TFT display, LED indication of Load, Power & Alarm status for each circuit, and front panel capacitive touch user interface buttons which are mounted on a hinged door. The ITC-FS enclosure provides electrical connections for the heating cable, the AC Power, and the RTD Sensors and it comes complete with stainless steel mounting brackets.

To comply with the UL approval for Fire Sprinklers the power connection between the cable and the ITC-FS must be made with an RTBC (PCN 513201). The bulb of the RTBC must be placed on one of the sprinkler sprig pipes nearest the sprig head. One RTBC per ITC-FS circuit is required. Example: A 2 circuit ITC-FS must have 2 RTBC’s and use one for each circuit.



Sensor Type 3-wire RTD, 100 W PT, 0.00385 W/W/˚C, 20 W balanced lead wire
Number of Sensor Inputs 2 per Circuit
Sensing Configuration Range: Single, RTD 1A to control both circuits, RTD 1A and 2A to control both circuits
Power Switching SSR
Number of Circuits 1 or 2
Capacity 22 Amps per Circuit
Control Types
PID Control mode must be set to Auto
Autotune On or Off
Proportional Band, (˚F) Range:  1 – 100
Integral (sec/repeat) Range:  0 – 9,999
Rate or Derivative, (seconds) Range:  0 – 500
On/Off Control mode must be set to Auto
Dead band, (˚F) Range:  2 – 100
Manual Range:  0 – 100%
Soft Start, Current Clamping Enable or Disable
Temperature (PV) Range:  +35˚F to +75˚F (+1˚C to +23˚C)
Low Temperature Alarm Range:  +20˚F to +150˚F, Off (-6˚C to +66˚C, Off)
High Temperature Alarm Range:  +20˚F to +150˚F, Off (-6˚C to +66˚C, Off )
Low Current Alarm Range:  0.1 A – 50.0 A, Off
High Current Alarm Range:  0.1 A – 50.0 A, Off
GFEP Range:  30 mA – 150 mA Off
GFEP Alarm Condition Alarm Only, Alarm & Trip, Alarm & Latch, Alarm & Trip & Latch
Output on Sensor Failure Range: 0–100%, Bumpless Transfer to Manual Mode
Calendar Year, Month, Day, Date, Hour & Minute
Audible button depress Range:  On, Off
Security 3 Levels of password protected security
Alarm State Normally Open, Normally Closed
Display, HMI, Indication
Display 3.5” 320 x 240 RGB Full color graphic TFT module
Human Interface 5 Capacitive Touch Input Buttons
LED Indication Power (Green), Load (Amber), Alarm (Red) – Per Ckt
Alarm Types Low & High Temperature, Low &  High Current, High GFEP, Sensor Failure
Alarm Relays 1 x DC Alarm Output, 1.8 Amp, 0 – 50 VDC
1 x AC Alarm Output, 1.8 Amp, 12 – 240 VAC
Alarm Contact State Mode Default
Normal Operation Closed
Alarm Condition Open
Power Off / Controller Failure Open
Modbus RTU/RS-485 (2 or 4 wire)
Modbus TCP/Ethernet (optional)
Webserver/Ethernet IP (Optional)
Operating & Environmental
Temperature -40˚F to 104˚F  (-40˚C to 40˚C)
Power Supply 100 to 277V 50/60Hz
Protection IEC IP66
Enclosure rating NEMA 4X FG (Optional Stainless Steel)
Approvals UL/cUL Freeze Protection of Fire Sprinkler Systems. (UL File: EX27939 VGNJ)

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