Thermostatic Radiator Head DANFOSS Redia RTD with Built-in Temperature Sensor, Set to “0”

DANFOSS Redia RTD thermostatic radiator head with built-in temperature sensor is designed to control radiator valves and maintain comfortable room temperature. The head includes an integrated sensor and a mechanical stop position marked “0”, which provides a defined shut-off or frost-protection setting. The compact design is intended for installation on compatible radiator valve bodies in residential and light-commercial heating systems, enabling precise manual regulation of radiator flow based on ambient temperature.

Advantages

The integrated temperature sensor eliminates the need for an external sensing element and simplifies installation on compatible valve bodies. A clear mechanical setting marked “0” provides a reliable, repeatable shut-off position for manual off or frost-protection. The device is compatible with standard radiator valves and supports stable temperature regulation through mechanical adjustment, offering straightforward operation without electronic control complexity.

Suitable for

• Manual temperature regulation of radiators in residential heating systems
• Frost-protection shut-off in seasonal or infrequently used spaces
• Use on compatible radiator valve bodies in apartments, houses, and small commercial premises
• Replacement of conventional radiator heads where a simple mechanical sensor is required

Key specifications

• Type: Thermostatic radiator head with built-in temperature sensor
• Control: Mechanical temperature-based adjustment with defined “0” shut-off position
• Installation: Fits compatible radiator valve bodies designed for thermostatic heads
• Applications: Residential and light-commercial heating systems for room temperature control and frost protection
• Operation: Passive, mechanically regulated sensing—no electronic power required

How to use

Mount the thermostatic head onto a compatible radiator valve body following the valve manufacturer’s mounting instructions. Set the head to the desired temperature position by turning the adjustment knob; use the “0” mechanical position when a defined shut-off or frost-protection setting is required. Adjust settings while the heating system is at operating temperature to achieve the preferred ambient climate. Regularly check that the sensor cap is unobstructed by curtains, furniture or other objects that could affect temperature measurement.

Usage recommendations

For reliable performance, ensure the radiator valve body is compatible with DANFOSS-style thermostatic heads and is clean and free of debris before installation. Avoid covering the thermostatic head and allow at least the minimum clearance recommended by the valve maker to ensure accurate temperature sensing. If precise temperature control or remote management is required, consider complementary electronic or smart control solutions in conjunction with this mechanical head.