Thermostatic actuator M28 230V NC (normally closed) T28NC230-8

Intelligent heating control with thermoelectric actuator

This thermoelectric actuator is a reliable solution for precise control of heat flow in underfloor heating and radiator systems. Designed for mounting on valves with an M28x1.5 thread, it enables remote temperature management in individual zones, resulting in thermal comfort and energy savings. Thanks to the normally closed (NC) function, the valve remains closed in the event of a power failure – ensuring safety and control over the system.

Functionality and application

The actuator is compatible with most valve heads with an M28 thread, making it easy to integrate with existing installations. It can work with both room controllers and wired or wireless control strips. It is ideal for underfloor heating systems, where precise temperature regulation is crucial for energy efficiency. Additionally, thanks to the FIRST OPEN function, installation is extremely simple and intuitive – it does not require complicated initial settings.

Key features and benefits

• FIRST OPEN function: Facilitates actuator installation, eliminating the need to manually open the valve during first-time mounting.
• Fast opening time: Valve opening takes about 2 minutes, ensuring a quick response to temperature changes.
• Low power consumption: Energy consumption is only 2W, minimizing operating costs.
• Position indicator: Built-in element allows for quick visual control of the valve's open or closed status – useful for both the installer during configuration and the end user in everyday use.
• Durable construction: The housing made of high-quality materials ensures durability and resistance to environmental conditions (IP54).
• Safety: The NC function guarantees valve closure in the event of a power failure, protecting against uncontrolled heat flow.
• Compact dimensions: 40 mm width, 70 mm height and 40 mm length allow for mounting even in tight spaces.
• Stroke length: 4 mm provides precise regulation of the heating medium flow.
• Two-point control signal: Enables easy integration with various control systems.

The actuator operates at a supply voltage of 230 V AC and draws a rated power of 2 VA. It has an M28 x 1.5 thread and provides an actuator stroke of 4 mm. The opening/closing time is approximately 2 minutes, and the degree of protection is IP54. It can operate at an ambient temperature from 5 to 60 °C, and the cable length is 0.9 m.

This actuator is an investment in the comfort and energy efficiency of your home! It allows you to create an intelligent heating system tailored to your individual needs.