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.

Measured valuestemperature
Output voltage2x 0..10 V, temperature, actuating variable valve drive
Output switch contactFan: floating contact NO, 250 V ~ / 6 A, Alarm: floating contact NO, 30 V ~ / 1 A
Power supply15..24 V = (±10%) or 24 V ~ (±10%) SELV
Power consumptionmax. 2 VA (24 V ~)
Measuring range temp.-10..+100 °C
Accuracy temperature±1 K (typ. at 0 °C)
Inputsfor passive sensor NTC10K (default), PT1000, Ni1000, Ni1000TK5000, adjustable, for external controller defining control value for valve, for fan (floating contact)
Functionsfrost protection function, controlling valve actuator, alarm, adjustable P-Controller (temperature)
DisplayLED green – indicator valve actuator, LED red – alarm, LED yellow – fan
EnclosureABS, white
Protection (IP)IP20 according to EN 60529
Electrical connectionremovable plug-in terminal, max. 2,5 mm²
Ambient condition-40..+70 °C, max. 85% rH non-condensing
Mountingprepared for mounting on DIN rail TS35 (35x7,5 mm) according to EN 60715

Contact us:

Thermokon Sensortechnik GmbH
Platanenweg 1
35756 Mittenaar
Tel.: +49 2778 6960-0

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