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 (5)

Publications and Manuals (4)

Specifications (18)

Videos (1)

Articles (1)

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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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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

Product Dimensions

Depth 5.9 in
Height 12.8 in
Installed Depth 0.75 in
Weight 5.8 lbs
Width 9 in


Included Sensor 2 x 100k ohms, 20' lead


UPC (GTIN-12) 881308058302



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