PRO-Tect: Pipe Freeze Protection Dual-Zone Control with GFEP

Part Number: PT-DUAL
This support page provides publications, manuals, specifications, videos, support articles, and common support questions

Common Support Questions (13)

Publications and Manuals (4)

Specifications (18)

Videos (3)

Articles (2)

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Common Support Questions

This would indicate that you have enabled the Low Temperature Alarm and that the current temperature the sensor is sensing is below the alarm setpoint. You can change the set point, wait for the heaters to warm the sensor, or disable the alarm.

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The GPT-230 displays a number of alarms, beside the ground fault it will also alarm for low current. If you have disconnected the load to trouble shoot a possible ground fault in the heater cable, then you probably have a Low Current Alarm and a very low default ground fault current reading.

You can tell the difference by looking closely at the display, it will tell you what the alarm is for. If you want to clear the low current alarm so you can test the controller then go into the configuration menu and disable the Low Current Alarm. You will need to do this for each channel.

Remember to re-enable the Low Current Alarms when you are done testing and ready to put the unit back into service.

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Yes, you can extend the sensor up to 2,000 ft. cable for enhanced installation options

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Yes, you can use a 3-wire RTD Sensor: Platinum, Alpha = 0.00385, ITS–90,100 ohms. Once it is installed you will need to configure the controller for it by navigating to the sensor type screen and changing it to RTD. The GPT-230 will allow you to use a different sensor on each channel or you can use one sensor for both channels. It is simply a matter of how you wish to configure it.

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Yes you can but you will need to increase the size (AWG) of the supply lines and circuit breaker to account for the increased load.

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Do not wrap self regulating cable around the pipe in a coiled or spiral fashion, and do not use electric tape to attach it. WarmlyYours recommends attaching the cable in a straight run and to use aluminum or fiberglass tape, pipe straps, or plastic zip ties to attach the cable. Then cover the assembly with fire-resistant insulation and assure it is waterproof. Place electrical heating cable WARNING labels every 10‘, and where the label will be clearly visible.

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Ice Shield is 120V or 240V and outputs 5W/ft, and is designed for roof and gutter deicing.
PRO-Tect is 120V or 240V and outputs 5W/ft, 8W/ft, or 10W/ft, and is designed for pipe freeze protection.

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Never spiral heating cable around pipes. Attach self regulating cable in straight runs at the 8 o'clock position, or if two runs are required (pipes greater than 12“ diameter) attach the cable at the 8 o'clock and the 4 o'clock positions. Please refer to the installation manual for further information.

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Use plastic zip ties, aluminum or fiberglass tape, or pipe straps. Do NOT use vinyl electrical tape, masking tape or duct tape. Do NOT use metal wire or metal twist ties to attach the cable.

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WarmlyYours offers a conversion kit (SR-PLUG-KIT) to enable a plug-in requirement. This kit includes ground fault equipment protection (GFEP). The receptacle must be 120V, grounded, and approved for wet locations if located outside. The self regulating cable must not exceed 140‘ in length.

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No. Only install pipe heat (heat trace cable) in accessible locations. Do not install this self regulating cable in walls or any place where the cable is hidden. Do not run it through walls, ceilings, or floors. The cable must be installed 10“ away from combustible surfaces, such as wood, and it should not be embedded in insulation or roofing material.

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WarmlyYours does not recommend using an extension cord for permanent installations. Pipe heat should always be plugged directly into a receptacle or hardwired to the circuit that is powering it.

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Publications and Manuals



Activation Temperature -99.9 to 999 F°
Connection Method Hardwired
Ground Fault Equipment Protection (GFEP) Self-test GFEP (Adjustable 1-300mA)
Maximum Load (Resistive Only) 2 x 30 amps
Voltage 100 - 277 VAC

Warranty / Certifications

Approvals UL and CSA listed
Area of Use Non-hazardous locations
Ingress Protection (IPxx) Rating IP66
Warranty 2 years
Waterproofing NEMA 4X


Country of Origin (COO) United States of America

Product Dimensions

Depth 5.9in
Height 12.8in
Installed Depth 0.75in
Width 9in


Included Sensor 2 x 100k ohms, 20' lead


UPC (GTIN-12) 881308058302



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