Danfoss termostatställdon QT DN15-32

The Danfoss Thermostatic Actuator QT DN15-32 is a high-quality mechanical thermostatic head designed for precise temperature control in hydronic heating systems. Featuring a built-in liquid sensor and tool-free click mounting, it ensures easy installation and reliable performance. Compatible with Danfoss RA-N, RA-G, and RA-FN valve bodies, this actuator offers a temperature setting range of 5-26°C and includes frost protection at approximately 5°C. Its white RAL 9010 finish and durable ABS plastic construction make it a seamless addition to any radiator.

Advantages

Energy-efficient operation with energy efficiency class A (TELL scheme) and precise temperature control with hysteresis <0.7 K. The tool-free click mounting simplifies installation, while the built-in liquid sensor ensures accurate response to temperature changes. Frost protection prevents freezing, and the actuator is certified according to EN 215 for reliability.

Suitable for

• Hydronic heating systems
• Radiators with Danfoss RA valve bodies (RA-N, RA-G, RA-FN)
• Residential and commercial heating applications

Key specifications

• Sensor Type: Built-in liquid sensor
• Connection Type: Danfoss RA click connection
• Temperature Setting Range: 5 - 26 °C
• Frost Protection: Yes (approx. 5°C)
• Max. Ambient Temperature: 60 °C
• Max. Media Temperature: 110 °C
• Hysteresis: < 0.7 K
• Response Time: 20 minutes
• Colour: White (RAL 9010)
• Material: ABS Plastic, Brass (connection)
• Mounting: Tool-free click mounting
• Energy Efficiency Class: A (according to TELL scheme)
• Certification: EN 215
• Setting Positions: 0-5 (with frost protection and max settings)
• Differential Pressure Influence: < 0.2 K
• Water Temperature Influence: < 1.2 K

Recommendations

For optimal performance, pair with Danfoss RA valve bodies. Ensure the actuator is installed in a location where ambient temperature does not exceed 60°C and media temperature does not exceed 110°C. Regular maintenance is not required, but periodic checks are recommended to ensure proper operation.