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Air heater thermostat, 70…95…°C (burner), 20…70…°C (fan), 100…°C (STB), capillary length 1250mm


Air heater thermostat, 70…95…°C (burner), 20…70…°C (fan), 100…°C (STB), capillary length 1250mm

Minimum or maximum thermostat for supply air monitoring and fan control in ventilation and air conditioning systems. Type-tested by TÜV according to DIN EN 14597. For warm air heaters according to DIN 4794. Sensor break: In case of sensor damage or sensor break, contacts 1 and 4 of the fan open. Intrinsic safety/cold protection: The units are intrinsically safe, i.e. if the sensor medium is lost, e.g. due to sensor breakage, the burner is switched off. Since minus temperatures produce the same effect by reducing the volume of the sensor medium, the units are adjusted by means of the "cold screw" in such a way that they only switch off the burner at temperatures below -15 °C. The units can only be switched on again manually at temperatures below -15 °C. The burner is then switched off again. The unit can only be switched back on manually at temperatures higher than approx. - 5 °C using the manual reset button. Overheating protection: The unit protects against uncontrolled overheating, caused e.g. by heat accumulation or by creeping capillary filling loss in the case of invisible damage to the sensor or capillary tube, etc. When a temperature of 220°C is reached, the safety slot in the sensor melts and the unit switches off the burner to the safe side due to loss of filling medium. The burner cannot be switched on again. The unit is then unusable and serves as proof of the existing excess temperature of at least 220°C.
Temperature-controlled fan control, burner monitoring and safety thermal cut-out, 3 functions.
  • Art.-Nr.: E6120077

    Technical data

    Ambient temperature, lower value-15 °C
    Ambient temperature, upper value80 °C
    Bearing temperature, lower value-15 °C
    Bearing temperature, upper value80 °C
    Capillary length1,25 m
    Control range, burner from70 °C
    Control range, burner up to95 °C
    Control range, fan from20 °C
    Control range, fan up to70 °C
    Cooling control functionYes
    Degree of contamination2
    Device versionSurface-mounted unit
    Electric connectionScrew terminals
    Electronic controlNo
    External resetYes
    Function type (systems engineering)TW/STB
    Heating control functionYes
    Housing materialSheet steel
    Internal settingYes
    Length of sensor1250 mm
    Max. sensor temperature200 °C
    Maximum air humidity (non-condensing)95 % r.H
    Maximum switching current15 (8) A
    Maximum switching voltage230 V AC, 50 Hz
    MediumAir, not aggressive
    Minimum switching current150 mA
    Minimum switching voltage230 V AC / 50 Hz
    Mounting / attachmentMounting on air duct
    Number of control ranges2
    Number of outputs6
    Operating voltageNone
    OperationIntern. setpoint adjuster, button, switch
    Output signalSwitching
    Potential free switching contactYes
    Protection classI
    Rated impulse voltage4000 V
    Safety and EMCIn accordance with DIN EN 60730
    ScaleDegree Celsius
    Sensor elementCapillary tube
    Sensor materialCu
    Surface propertiesMatt
    Switching contact3 two-way contacts
    Switching difference8 K
    Switching elementMicroswitch
    Switching power3450 W
    Type of protectionIP20
    With explosion protectionNo
    Circuit diagram Circuit diagram





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