Frost protection thermostat TFRe active

electronicadjustableNO

Electronic frost protection thermostat for downstream temperature monitoring of e.g. heat exchangers in ventilation and air-conditioning systems. Integrated P-controller for constant control of a heat exchanger valve within its intended operating range. Safety shutdown of the fan and - if necessary - closing the air inlet flaps to protect the heat exchanger in case set thresholds are exceeded. Temperature measurement optionally with a contact sensor, immersion sensor or cable sensor with up to four selectable sensor characteristic curves. For a quick temperature measurement in the return water pipe of the heat exchanger, a fast-response sensor (e.g. TF14 with KL4VA) should be used. • Application/type : Frost protection thermostat • Purpose : Measure values • Measured values : temperature • Interface : Active, 0..10 V, Switch contact • Functions : to control valve actuators, integrated controller, integrated P controller, frost protection, alarm in case of cable break or short circuit of the sensor, alarm setpoint 0..+16 °C (switching hysteresis 0..+3 °K adjustable) • Operating elements : 2 rotary knobs (Talarm and Xp) • Configuration : DIP switches • Output voltage : 0..10 V (measured temperature value 0..+100 °C), 0..10 V (control value for valve actuator 0..+100%), max. load 10 mA • Output switch contact : NO contact fan, floating, for 250 V ~, load max. 6 A, NO contact alarm, floating, for 30 V ~, load max. 1 A • Input : 1x input sensor PT1000 (default), NTC10K, Ni1000, Ni1000TK5000, 1x input for external controller for defining set point, 1x input for floating contact • Operating range temperature (°C) : -40..+70 • Operating ranges temperature (°C) : -40..+70