Frost Protection Thermostat

Frost Protection Thermostat Frost protection thermostat. For frost protection applications for pipes, OJ provides thermostat ETI along with temperature sensor for pipe ETF-6.

Type: ETI

For frost protection applications for pipes, OJ provides thermostat ETI along with temperature sensor for pipe ETF-6

The ETI is an ON/OFF thermostat with adjustable differential temperature for control of temperature. When the sensor temperature is below the temperature set -1/2 differential the potential free relay is activated and heating is switched on. When the sensor temperature exceeds the temperature set +1/2 differential the relay breaks and the heating element is switched out and the LED is turned off. As the ETI is supplied with a change-over relay, the thermostat can also be used as a cooling thermostat.

  • ON/OFF thermostat with adjustable differental temperature

  • Can also be used as a cooling thermostat





  • Installation – Length of sensor cable


    What is the maximum length of the sensor cable?


    In general, it is recommended that the maximum sensor cable length should be 164 feet/50 meters, the length might be shorter. Read the instructions for the precise maximum length.

  • How can I cure the E2 error message?


    "E2" means defective, damaged or disconnected floor sensor. Sensor resistance should be 10 or 12 kOhm at 25°C (77°F). The onstruction or quick guide holds informatiom for the specific thermostats.

  • Where to connect the ground wire of floor mats?


    The ground wire in the floor mat must be connected directly to the ground wire of the supply.

  • What is the recommended night setback?


    The recommended night setback is max 5°C/41°F



  • Does the adaptive function reset when making a factory reset?


    Yes the adaptive function is reset during a factory reset.



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Intelligent Control
Green Comfort

Intelligent control results in maximum comfort with low energy consumption.


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