Warmup ODC-TRACE Heat Trace Controller Installation, Wiring & User Guide
The Warmup ODC-TRACE Heat Trace Controller is an outdoor-rated heat tracing control system designed to automatically protect pipes, valves, tanks, and other critical equipment from freezing temperatures. It monitors ambient conditions and activates electric heat tracing only when needed, helping reduce energy consumption while maintaining reliable freeze protection.
This installation and user guide combines the manufacturer's technical documentation into an easy-to-follow reference for installers, contractors, facility managers, and maintenance professionals. You'll find installation requirements, wiring information, operating instructions, technician settings, troubleshooting procedures, and communication options in one convenient guide.
In this guide you'll learn:
- System overview and controller features
- Installation requirements and safety information
- 120V and 240V wiring connections
- Operating modes and controller functions
- Technician programming options
- Ground Fault Equipment Protection (GFEP) operation
- BACnet and Modbus communication settings
- Troubleshooting and diagnostic information
- Maintenance and testing recommendations
Product Overview
The Warmup ODC-TRACE Heat Trace Controller provides intelligent automatic control for electric heat tracing systems used on pipes, valves, tanks, and similar freeze protection applications. The controller continuously monitors temperature conditions and energizes the heating circuit only when required, improving energy efficiency while helping protect piping systems from freezing.
The controller features a backlit LCD display that provides system status, operating information, and access to technician settings for installation and maintenance.
Main features include:
- Automatic and manual operating modes
- Selectable Fahrenheit or Celsius temperature display
- Adjustable temperature setpoints
- Energy-saving lower temperature lockout
- Adjustable heater shutdown delay
- Optional secondary Aquastat sensor support
- Ground Fault Equipment Protection (GFEP)
- BACnet / Modbus communication (select models)
- Master / Slave networking capability
- Built-in commissioning and testing functions
Installation Notes
Read all installation instructions before installing or operating the controller. Installation must be performed by a qualified electrician and comply with all applicable local electrical codes as well as NEC and CEC requirements.
Disconnect power before opening the enclosure or making any wiring connections. Failure to remove power may result in serious injury, electrical shock, or equipment damage.
The controller is suitable for indoor or outdoor wall-mounted installations and is housed in a weather-resistant enclosure. When installed outdoors, use only approved weather-tight conduit fittings and cable glands suitable for the installation environment.
Use copper conductors only and ensure wire sizes are properly selected for the connected load. Branch circuit protection, grounding, and disconnect means must comply with all local electrical regulations.
Verify that the connected heat tracing system is listed and approved for the intended application before energizing the controller.
System Components and Applications
The Warmup ODC-TRACE Heat Trace Controller is designed to provide automatic control for electric heat tracing systems used to protect exposed piping, valves, tanks, gutters, roof drains, and similar equipment from freezing temperatures. The controller monitors ambient conditions and energizes the heating circuit only when environmental conditions require freeze protection.
The system includes a weather-resistant outdoor control enclosure, an electronic controller with a backlit LCD display, temperature sensing inputs, relay outputs for controlling electric heat tracing circuits, and optional communication capabilities for building management systems.
The controller is commonly used in:
- Commercial pipe freeze protection systems
- Industrial process piping
- Water supply and fire protection piping
- Roof and gutter de-icing systems
- Tank freeze protection
- Mechanical rooms
- Outdoor exposed plumbing systems
- Agricultural facilities
- Municipal water systems
The controller automatically switches the heating circuit on and off based on temperature conditions, helping reduce operating costs while providing reliable freeze protection throughout the winter season.
Controller Features
The ODC-TRACE controller provides several operating and programming features that simplify installation while improving system performance and energy efficiency.
- Automatic and manual operating modes
- Large backlit LCD display for easy operation
- Selectable Fahrenheit or Celsius temperature display
- Adjustable heating temperature setpoint
- Programmable lower ambient temperature lockout
- Adjustable heater shutdown delay
- Optional Aquastat temperature sensor support
- Ground Fault Equipment Protection (GFEP)
- Commissioning and diagnostic test functions
- Master/Slave networking capability on supported models
- BACnet and Modbus communication support on compatible controllers
These features allow the controller to automatically respond to changing weather conditions while minimizing unnecessary energy consumption and simplifying routine maintenance.
Installation Requirements
Before installing the controller, verify that the electrical service, heat tracing equipment, and mounting location meet all applicable local electrical codes and the manufacturer's installation requirements.
Installation should only be performed by qualified personnel experienced with electric heat tracing systems. Always disconnect electrical power before opening the enclosure or making wiring connections.
The enclosure is designed for indoor or outdoor wall-mounted installations. When installed outdoors, use approved weather-tight conduit fittings and cable glands to maintain the enclosure's environmental protection rating.
Before energizing the controller:
- Verify the supply voltage matches the controller rating.
- Confirm all wiring complies with NEC and local electrical codes.
- Use copper conductors of the proper wire gauge.
- Install the required branch circuit protection and disconnect means.
- Verify all heat tracing products are approved for the intended application.
- Inspect all wiring connections before applying power.
Proper installation helps ensure reliable operation, accurate temperature control, and long service life for both the controller and the connected heat tracing system.
Ground Fault Equipment Protection (GFEP)
The Warmup ODC-TRACE Heat Trace Controller incorporates Ground Fault Equipment Protection (GFEP) to help protect the connected heat tracing equipment. Unlike a Class A GFCI intended for personnel protection, the integrated GFEP is designed specifically to detect leakage current that could indicate damaged heating cable insulation or electrical faults within the heat tracing system.
Installers should become familiar with the operation of the GFEP before placing the system into service. The manufacturer's documentation recommends testing the GFEP on a regular basis to verify proper operation and to ensure continued system reliability.
If the GFEP trips, investigate the cause before resetting the controller. Damaged heating cables, moisture intrusion, wiring faults, or improper installation may cause nuisance trips or indicate a condition that requires repair.
GFEP Alarm Contact Status
| GFEP Status | NO - COM | NC - COM |
|---|---|---|
| GFEP Tripped | Short | Open |
| GFEP Not Tripped | Open | Short |
Installation Safety Notes
- Disconnect electrical power before opening the controller enclosure.
- Install the controller according to all applicable NEC, CEC, and local electrical codes.
- Use only copper conductors of the proper wire size.
- Verify branch circuit protection is correctly sized for the connected heat tracing load.
- Use approved weather-tight fittings when installing the enclosure outdoors.
- Inspect all wiring before energizing the controller.
- Test the GFEP after installation and during routine maintenance.
Following these installation practices helps ensure safe operation and long-term reliability of the heat tracing system.
120 Volt Wiring Overview
The Warmup ODC-TRACE controller is available in 120-volt configurations designed to control a single heat tracing zone. Before making any electrical connections, verify that the incoming supply voltage matches the controller model being installed.
The installer should provide a properly protected branch circuit and disconnecting means in accordance with applicable electrical codes. The controller is designed for copper conductors only, and all wiring should be sized appropriately for the connected electrical load.
The 120V controller includes terminals for:
- Main power input
- Heat tracing load connection
- Ground Fault Equipment Protection (GFEP) status output
- Heat output indication
- Optional Aquastat sensor connection
- BACnet / Modbus communication on supported models
Always verify all field wiring before applying power to the controller. Incorrect wiring or supply voltage may damage the controller and connected equipment.
240 Volt Wiring Overview
Warmup ODC-TRACE controllers are also available in 240-volt models for applications requiring higher voltage heat tracing circuits. Before installation, verify the controller model and confirm that the available power supply matches the equipment nameplate rating.
All wiring should be completed by a qualified electrician using copper conductors sized for the connected load. Branch circuit protection, disconnecting means, and grounding must comply with NEC, CEC, and all applicable local electrical codes.
The 240V controller includes connections for:
- 240V main power supply
- Heat tracing load output
- Ground Fault Equipment Protection (GFEP) status output
- Heat output indication
- Optional Aquastat temperature sensor
- BACnet / Modbus communication on supported models
After completing all wiring connections, inspect the installation carefully before energizing the controller. Incorrect voltage, loose terminals, or improper wiring may result in equipment damage or unreliable operation.
Master / Slave Network Configuration
Selected ODC-TRACE controller models support Master / Slave networking, allowing multiple heat trace controllers to operate together as a coordinated system. This configuration is commonly used in larger commercial and industrial installations where multiple heating zones require centralized control.
Each slave controller communicates with the designated master controller using the manufacturer's communication network. Proper addressing is required before the controllers can exchange operating information.
When configuring a Master / Slave installation:
- Assign a unique communication address to each controller.
- Verify all communication wiring before powering the system.
- Follow the manufacturer's recommended addressing sequence.
- Confirm communication between the master and all connected slave controllers.
- Test system operation after programming is complete.
Correct network configuration allows all connected controllers to operate reliably while simplifying system management and maintenance.
Master / Slave Address Configuration
The following address ranges are used when configuring a Master / Slave network.
| Maximum Slave Controllers | Master MAC Address Range | Slave MAC Address Range |
|---|---|---|
| Up to 3 | 1 - 63 | 14 - 16 |
Building Management System (BACnet / Modbus)
Compatible ODC-TRACE controllers support BACnet and Modbus communication for integration with Building Management Systems (BMS). This allows facility managers to monitor controller status, alarms, operating conditions, and system performance from a centralized control platform.
BMS integration may include:
- Remote controller monitoring
- Alarm reporting
- System status indication
- Temperature monitoring
- Operational diagnostics
- Network management of multiple controllers
Communication settings should be configured during commissioning and verified before placing the controller into normal operation.
Operating the ODC-TRACE Heat Trace Controller
Once installation and wiring have been completed, the controller can be powered on and configured for normal operation. The backlit LCD display provides system status, operating mode, temperature information, and access to technician settings.
The controller is designed for simple day-to-day operation while providing advanced programming options for installers during commissioning.
The display provides information including:
- Current operating mode
- Measured temperature
- Heating status
- Alarm conditions
- Programming menus
- System diagnostics
During normal operation, the controller continuously monitors temperature conditions and automatically energizes or de-energizes the heat tracing circuit based on the programmed operating parameters.
P02 - Lower Limit Temperature for Heating
P02 sets the minimum ambient temperature at which the controller will stop the heat tracing system. When the measured ambient temperature falls below the configured lower limit, heating is disabled to help prevent unnecessary operation outside the intended operating range.
- Press SELECT and + simultaneously to access parameter P02.
- Use the + and - buttons to adjust the lower temperature limit.
- Adjustment range: -40°F to +32°F (-40°C to -5°C).
- Factory default: -31°F (-35°C).
- Press SELECT and + again to enable or disable the parameter.
- Select ON to activate the lower temperature limit or OFF to disable it.
If P02 is disabled, the controller operates without a lower ambient temperature lockout.
P03 - Heater Shutdown Delay (Hold ON)
P03 controls how long the heating system continues operating after the ambient temperature rises above the heating setpoint. This adjustable delay helps prevent unnecessary cycling and provides smoother system operation during changing weather conditions.
- Press SELECT and + simultaneously to access parameter P03.
- Adjust the shutdown delay in hours using the + and - buttons.
- Hours range: 0 to 99 hours.
- Factory default: 1 hour.
- Press SELECT and + again to adjust the minutes.
- Minutes range: 0 to 59 minutes.
- Factory default: 30 minutes.
Note: The shutdown delay countdown begins after the ambient temperature rises above the programmed heating setpoint.
P04 - Manual Mode ON Time
P04 determines how long the heating system remains energized when the controller is placed in Manual ON mode. This setting is commonly used during commissioning, maintenance, or troubleshooting when continuous heating is temporarily required.
- Press SELECT and + simultaneously to access parameter P04.
- Use the + and - buttons to adjust the Manual ON time in hours.
- Hours adjustment range: 1 to 48 hours.
- Factory default: 4 hours.
- Press SELECT and + again to adjust the minutes.
- Minutes adjustment range: 0 to 59 minutes.
- Factory default: 30 minutes.
After the programmed Manual ON period expires, the controller automatically returns to normal Automatic operating mode.
P05 - Not Used
Parameter P05 is reserved and is not used by the ODC-TRACE controller. No configuration changes are required. Simply proceed to the next available technician setting.
P06 - Temperature Sensor / Aquastat Logic
P06 determines which sensor controls heat tracing operation. Depending on the installation, the controller can use the ambient temperature sensor, the optional Aquastat sensor, or both sensors together.
- Press SELECT and + simultaneously to access parameter P06.
- Use the + and - buttons to select one of the following operating modes:
| Setting | Operation |
|---|---|
| 0 | Temperature sensor and Aquastat together (default) |
| 1 | Temperature sensor only |
| 2 | Aquastat sensor only (ambient temperature is not displayed) |
P08 - MAC Address for BMS and Master / Slave Controllers
P08 configures the controller's MAC address for Building Management System (BMS) communication and Master / Slave operation. Each controller on the network must be assigned a unique MAC address to ensure proper communication.
- Press SELECT and + simultaneously to access parameter P08.
- Use the + and - buttons to assign the desired MAC address.
| Controller Mode | MAC Address Range | Factory Default |
|---|---|---|
| Master (BMS) | 1 - 63 | 1 |
| Slave | 14 - 16 | 14 |
| No Communication | 0 | Disabled |
Assign a unique MAC address to every controller connected to the network. Duplicate addresses will prevent proper communication between the Master controller, Slave controllers, and the Building Management System.
P09 - Test Conditions / Technician Commissioning Mode
P09 places the controller into Test Conditions mode, allowing installers to verify system operation without waiting for actual outdoor temperatures. During testing, the controller simulates an ambient temperature of 19°F (-7°C).
- Press SELECT and + simultaneously to access parameter P09.
- Press the + button to enable Test Conditions mode.
- The word Test appears on the display while the controller is operating in commissioning mode.
- Press the - button to manually exit Test Conditions mode.
Note: If Test Conditions mode is not manually exited, the controller automatically returns to normal operation after approximately 5 hours.
P11 - Master / Slave Configuration
P11 determines whether the controller operates as a Master controller or as a Slave controller within a multiple-controller heat tracing system.
| Setting | Function |
|---|---|
| MA | Master controller (default). Use for a single controller or when controlling additional Slave controllers. |
| SL | Slave controller controlled by another ODC-TRACE Master controller. |
P15 - Temperature Sensor Calibration Offset
P15 allows fine adjustment of the displayed temperature to compensate for sensor placement or calibration differences.
- Press SELECT and + simultaneously to access parameter P15.
- Use the + button to increase the temperature offset.
- Adjustment range: -9°F to +9°F (-6°C to +6°C).
- Factory default: 0°F (0°C).
After calibration is complete, verify the displayed temperature against a known accurate thermometer before placing the system into normal operation.
Save Changes and Return to Normal Operation
After completing any technician parameter changes, return the controller to normal operating mode by moving DIP switch S1 back to the OFF position.
Important: Changes made to technician parameters are not applied while DIP switch S1 remains in the ON position. Always return S1 to OFF to save the new settings.
Restore Factory Default Settings
If required, the controller can be restored to its factory default settings.
- Move DIP switch S1 to the ON position.
- Press and hold the ON button for approximately 10 seconds until the controller beeps.
- Move DIP switch S1 back to the OFF position.
Short Measuring Times (Test Mode Only)
DIP switch S2 provides a shortened timing mode for commissioning and testing.
- S2 ON: Short measuring times for testing. All timing values are accelerated by a factor of 60 (1 hour becomes 1 minute, and 1 minute becomes 1 second).
- S2 OFF: Normal operating mode.
DIP Switches S3 and S4
DIP switches S3 and S4 are not used and should remain in the OFF position during normal operation.
BMS - BACnet / Modbus (FPC-02-OD-AB Only)
The FPC-02-OD-AB controller supports both BACnet and Modbus Building Management System (BMS) communication protocols. Protocol selection is controlled using DIP switch S6.
- S6 ON: BACnet communication
- S6 OFF: Modbus communication
Verify that all connected controllers and the Building Management System are configured to use the same communication protocol.
Temperature Readings and Communication Errors
The controller continuously monitors sensor inputs and communication status. When an abnormal condition is detected, an error message is displayed to simplify troubleshooting.
Temperature Sensor Outside the Measurement Range
- Low temperature (LO): Ambient temperature below -31°F (-35°C).
- High temperature (HI): Ambient temperature above 91°F (35°C).
Temperature Sensor Error
- SensErr 2: External temperature sensor is disconnected or short-circuited.
- SensErr: Internal temperature sensor fault.
Slave Controller Communication Error
If communication with a connected Slave controller is lost, the display will show Aux1 together with 00, indicating a communication fault between the Master and Slave controller.
Ground Fault Equipment Protection (GFEP)
The integrated Ground Fault Equipment Protection (GFEP) device protects the heat tracing circuit by detecting ground faults or earth leakage currents greater than 30 mA. When a fault is detected, the GFEP automatically disconnects power to help protect the electrical circuit.
Warmup recommends testing the GFEP at least once each month to verify proper operation.
Monthly GFEP Test Procedure
- Press the TEST (T) button. The GFEP should trip immediately and the red indicator should activate.
- Move the handle back to the ON position to restore normal operation.
- Repeat the test several times to verify consistent operation.
- If the GFEP does not trip or reset correctly, replace the device before returning the system to service.
Modbus Object List (FPC-02-OD-AB Only)
The FPC-02-OD-AB controller supports Modbus RTU communication for integration with Building Management Systems (BMS). To enable Modbus communication, set DIP switch S6 to the OFF position.
- Protocol: Modbus RTU
- Slave Address: 1-127
- Baud Rate: 9600
- Data Format: 8 data bits, No parity, 1 stop bit (8N1)
Supported Modbus Commands
- 0x03 - Read Holding Registers
- 0x06 - Preset Single Register (read/write registers only)
- 0x2B - Identify Controller
| No. | Address | Object Name | Range / Value | Default | Access |
|---|---|---|---|---|---|
| 1 | 0 (0x00) | TemperatureOutside | -40 to 35°C (-40 to 95°F) | - | R |
| 2 | 1 (0x01) | SetPoint | -10 to 25°C (14 to 77°F) | 3°C (37°F) | R/W |
| 3 | 2 (0x02) | LowLimitHeat | -40 to 0°C (-40 to 32°F) | -35°C (-31°F) | R/W |
| 4 | 3 (0x03) | HeatersOffDelay | 1-6000 min | 90 min | R/W |
| 5 | 4 (0x04) | ManualPeriodTime | 10-6000 min | 240 min | R/W |
| 6 | 5 (0x05) | StaggeringTime | 10-1999 min | 120 min | R/W |
| 7 | 6 (0x06) | TemperatureAquastatLogic | 0-2 | 0 | R/W |
| 8 | 7 (0x07) | HeaterMode | 0-4 | 0 | R/W |
| 9 | 8 (0x08) | CommissioningMode | 1-On, 0-Off | 0-Off | R/W |
| 10 | 9 (0x09) | Heater 1 | 1-On, 0-Off | - | R |
| 11 | 10 (0x0A) | Heater 2 | 1-On, 0-Off | - | R |
| 12 | 11 (0x0B) | Heater 3 | 1-On, 0-Off | - | R |
| 13 | 12 (0x0C) | Heater 4 | 1-On, 0-Off | - | R |
| 14 | 13 (0x0D) | Heater 5 | 1-On, 0-Off | - | R |
| 15 | 14 (0x0E) | Aquastat Signal | 1-On, 0-Off | - | R |
| 16 | 15 (0x0F) | SettingMode | 1-On, 0-Off | - | R |
| 17 | 16 (0x10) | ShortTimeMode | 1-On, 0-Off | - | R |
| 18 | 17 (0x11) | StaggeringMode | 1-On, 0-Off | - | R |
| 19 | 18 (0x12) | StaggeringMode | 1-On, 0-Off | - | R |
| 20 | 19 (0x13) | OnOff | 1-On, 0-Off | 0-Off | R/W |
| 21 | 20 (0x14) | C/F Scale | 1-On, 0-Off | 0-Off | R/W |
| 22 | 21 (0x15) | RestoreDefaults | 1-On, 0-Off | 0-Off | R/W |
| 23 | 22 (0x16) | GroundFault | 1-On, 0-Off | 0-Off | R |
| 24 | 23 (0x17) | InternalTemperature (T3) | -40 to 35°C (-40 to 95°F) | - | R |
| 25 | 24 (0x18) | InternalHeater | 1-On, 0-Off | - | R |
| 26 | 25 (0x19) | SensorsError | 0-99 | 0 | R/W |
Note: Modbus Register X is addressed as Modbus Register Address (PDU) X-1. All registers use signed 16-bit integer values.
BACnet Object List (FPC-02-OD-AB Only)
The FPC-02-OD-AB controller supports BACnet MS/TP communication for Building Management System (BMS) communication. Set DIP switch S6 to the ON position to enable BACnet communication.
- Protocol: BACnet MS/TP
- Baud Rates: 9600, 19200, 38400, and 76800
- Data Format: 8 data bits, no parity, 1 stop bit
The following BACnet object list is provided for installers and building automation professionals configuring communication with the ODC-TRACE controller.
Automatic and Manual Operating Modes
The ODC-TRACE controller supports both Automatic and Manual operating modes to accommodate normal operation, commissioning, maintenance, and troubleshooting.
Automatic Mode
In Automatic mode, the controller continuously monitors the connected temperature sensor and automatically switches the heating circuit on or off according to the programmed temperature settings. This operating mode provides the best balance between freeze protection and energy efficiency.
Manual Mode
Manual mode temporarily energizes the heating system regardless of ambient temperature. This mode is typically used during installation, commissioning, or troubleshooting to verify proper system operation.
After the programmed manual operating period expires, the controller automatically returns to normal automatic operation.
Controller Display Indicators
The LCD display provides continuous feedback about controller operation and makes it easy to determine the current operating condition.
- Heating output indication
- Current temperature display
- Automatic or Manual operating mode
- Temperature scale selection (°F or °C)
- Programming menu indicators
- Alarm and fault notifications
- Communication status on supported models
Installers should verify the display indications during startup to confirm proper operation before placing the system into service.
Technician Settings
The technician settings menu allows qualified installers to configure operating parameters for the specific heat tracing application. These settings should normally be adjusted only during installation, commissioning, or maintenance.
Depending on the controller model, technician settings may include:
- Heating temperature setpoint
- Lower ambient temperature lockout
- Heater shutdown delay
- Manual operating time
- Aquastat sensor configuration
- Master / Slave communication settings
- Temperature calibration
- System test functions
After making programming changes, always verify controller operation before returning the system to normal service.
Available Technician Parameters
| Parameter | Description |
|---|---|
| P01 | Heating temperature setpoint |
| P02 | Lower ambient temperature limit to stop the heater |
| P03 | Time delay before stopping the heater |
| P04 | Manual mode ON time |
| P05 | Heater cycle time / splitting time |
| P06 | Enable or disable the second temperature sensor (Aquastat) |
| P08 | MAC address for BMS and Master / Slave configuration |
| P09 | Commissioning / Test mode |
| P11 | Master / Slave configuration |
| P15 | Temperature sensor calibration offset |
| Reset | Restore factory default settings |
Technician Settings Explained
The ODC-TRACE controller includes several programmable parameters that allow the system to be configured for different climates, heat tracing applications, and operating requirements. These settings should only be adjusted by qualified installers during commissioning or service.
P01 - Heating Temperature Setpoint
This setting determines the temperature at which the controller energizes the heat tracing system. Selecting an appropriate setpoint helps provide reliable freeze protection while minimizing unnecessary energy consumption.
P02 - Low Ambient Temperature Lockout
This parameter defines the minimum outdoor temperature at which the controller will continue operating. When ambient temperatures fall below the programmed limit, the controller can suspend operation based on the selected control strategy and system requirements.
P03 - Heater Off Delay
The heater off delay keeps the heating circuit energized for a programmed period after normal heating demand has ended. This helps eliminate rapid cycling and allows residual heat to protect the piping before the controller switches off.
P04 - Manual Mode Runtime
This setting determines how long the controller remains in Manual mode before automatically returning to Automatic operation. It is commonly used during commissioning, startup, and troubleshooting.
P06 - Optional Aquastat Sensor
Controllers equipped with an optional Aquastat sensor can enable or disable this input through the technician settings. The secondary sensor provides additional control options for specialized heat tracing applications.
P08 - Communication Address
Controllers equipped with BACnet, Modbus, or Master/Slave communication require a unique network address. This setting allows each controller to communicate properly within the building management system.
P09 - Test Mode
Test Mode temporarily places the controller into a commissioning environment, allowing installers to verify wiring, heating output, sensors, and controller operation without waiting for actual outdoor weather conditions.
P11 - Master / Slave Configuration
When multiple controllers are installed, this setting assigns each controller as either the Master or a Slave device, allowing coordinated operation across multiple heating zones.
P15 - Temperature Calibration
The temperature calibration setting allows installers to compensate for minor sensor differences when necessary. Calibration should only be performed after confirming sensor accuracy with a reliable temperature measurement device.
Saving Configuration Changes
After modifying technician settings, save the new configuration and allow the controller to return to normal operation. Verify that the display shows the expected operating mode and confirm the controller responds correctly to changing temperature conditions before placing the system into service.
If configuration changes do not produce the expected results, review each programmed parameter, inspect the wiring connections, and verify proper sensor operation before making additional adjustments.
Troubleshooting Guide
If the ODC-TRACE Heat Trace Controller is not operating as expected, verify the installation, wiring, and programmed settings before replacing components. Most operating issues are related to power supply problems, sensor wiring, communication settings, or incorrect controller configuration.
Controller Will Not Power On
- Verify incoming supply voltage.
- Inspect branch circuit breakers and fuses.
- Confirm all power wiring connections are secure.
- Verify the disconnect switch is in the ON position.
Heating System Does Not Energize
- Confirm the controller is operating in Automatic or Manual mode.
- Verify the programmed temperature settings.
- Inspect the temperature sensor connection.
- Check all heat tracing cable connections.
- Verify the heating circuit voltage matches the controller rating.
GFEP Trips Repeatedly
- Inspect the heating cable for damage.
- Check for moisture inside electrical connections.
- Verify proper grounding.
- Inspect field wiring for insulation damage.
- Repair any electrical faults before resetting the controller.
Communication Problems
- Verify BACnet or Modbus wiring.
- Confirm each controller has a unique communication address.
- Check Master / Slave configuration.
- Verify communication settings within the Building Management System.
If problems continue after completing these checks, compare all controller settings with the installation requirements and verify that every field connection has been completed correctly.
Routine Maintenance
The ODC-TRACE controller requires very little routine maintenance; however, periodic inspections help ensure reliable long-term operation.
- Inspect the enclosure for physical damage.
- Verify weather-tight conduit fittings remain sealed.
- Test the Ground Fault Equipment Protection (GFEP).
- Inspect field wiring for signs of wear or moisture.
- Verify temperature sensors remain securely mounted.
- Confirm the controller display operates normally.
- Check heating system operation before the start of each winter season.
Routine inspection can identify small problems before they develop into costly system failures or freeze damage.
Commissioning Checklist
Before placing the heat tracing system into normal service, complete the following commissioning checks:
- Confirm supply voltage matches the controller rating.
- Inspect all field wiring.
- Verify branch circuit protection.
- Confirm proper grounding.
- Verify temperature sensor operation.
- Test Automatic and Manual operating modes.
- Confirm heating output operates correctly.
- Test the GFEP.
- Verify communication settings if BACnet or Modbus is used.
- Confirm the controller returns to Automatic operation after testing.
Completing these commissioning steps helps ensure the controller is ready for dependable operation throughout the heating season.
Technical Specifications
- Product: Warmup ODC-TRACE Heat Trace Controller
- Application: Electric heat tracing and pipe freeze protection systems
- Installation Location: Indoor or outdoor wall mounting
- Enclosure: Weather-resistant NEMA 4X / IP67 rated enclosure
- Supply Voltage: Available in 120V and 240V models
- Control Modes: Automatic and Manual
- Temperature Display: Fahrenheit or Celsius
- Display: Backlit LCD
- Ground Fault Equipment Protection (GFEP)
- Optional Aquastat temperature sensor support
- BACnet / Modbus communication on supported models
- Master / Slave networking capability on supported models
Always verify the model number and electrical ratings before installation. Refer to the product label for the exact specifications of the controller being installed.
Frequently Asked Questions
Can the ODC-TRACE controller be installed outdoors?
Yes. The controller is housed in a weather-resistant enclosure suitable for indoor or outdoor wall-mounted installations when installed using approved weather-tight conduit fittings and cable glands.
Can the controller operate automatically?
Yes. In Automatic mode, the controller monitors temperature conditions and energizes the heat tracing system only when heating is required.
Does the controller support manual operation?
Yes. Manual mode allows installers to energize the heating system during startup, commissioning, maintenance, and troubleshooting.
Does the controller include Ground Fault Equipment Protection?
Yes. The controller incorporates Ground Fault Equipment Protection (GFEP) to help protect connected heat tracing equipment and should be tested periodically as part of routine maintenance.
Can multiple controllers be connected together?
Supported models can be configured in Master / Slave mode and may also support BACnet or Modbus communication for integration with compatible Building Management Systems.
Related Resources
Related Products
- Shop Warmup Pipe Freeze Protection Systems
- Shop Warmup Pipe Freeze Controllers & Controls
- Shop Snow Melt & Ice Defrost
Final Thoughts
The Warmup ODC-TRACE Heat Trace Controller provides dependable automatic control for electric heat tracing systems used to protect pipes, valves, tanks, and other critical equipment from freezing temperatures. Proper installation, wiring, programming, and routine maintenance help ensure reliable operation while reducing unnecessary energy consumption.
This guide combines the manufacturer's installation information with additional explanations to help installers, contractors, and maintenance personnel better understand controller operation, technician settings, communication features, and troubleshooting procedures. Always follow applicable electrical codes and the manufacturer's recommendations when installing or servicing the controller.