TFR
The frost protection thermostat TFR is used for downstream temperature monitoring of water air heaters in ventilation and air-conditioning systems to prevent frost damages. It has a small differential gap and a high reproducibility. The reset can be done automatically or manually in case of type '-R'. The frost protection thermostat can be used to initiate the following frost protection functions: Stop fan, Close outside air dampers, Open heating coil valve 100%, Star heating coil pump, Switch-off chiller (condenser) and humidifier, Trigger visual and/or audible frost alarm
| Measuring values | temperature |
|---|---|
| Medium | air |
| Output switch contact | single pole change over, switching capacity max. 10 A (250 V ~) |
| Accuracy temperature | repeatability ±0,5 K |
| Set point range | -10..+15 °C (default +5 °C) |
| Switching values | switching differential: 2 °C ±1 °C |
| Enclosure | PA6, light grey, cover ABS, transparent |
| Protection | IP65 according to EN 60529 |
| Cable entry | M16 for wire max. Ø=8 mm |
| Connection electrical | terminal block, max. 2,5 mm² |
| Capillary pipe | copper with tube filling R507, length 1,8 | 3 | 6 | 12 m, sensor operating length approx. 600 mm |
| Ambient condition | -35..+70 °C, max. 85% rH short term condensation |
| Delivery contents | Installation set TFR/MWF (6 pcs) |