Frost Protection Thermostat
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.
Intelligent control results in maximum comfort with low energy consumption.
Our room thermostats for electric underfloor heating are recognised for their ideal combination of form and function. View our FHEL product range here.
Find the latest Floor Heating Electric News from OJ Electronics here.
Dialogue and close cooperation is the shortest way to a perfect solution.