Overview: This document provides detailed specifications and guidelines for the RA series of thermostatic sensors by Danfoss, designed for use in central and district heating systems. The RA series includes various models with built-in and remote sensors, offering features such as frost protection, temperature range settings, and anti-theft facilities.

Application: The RA series is suitable for all central and district heating systems, functioning as self-actuating proportional controllers with a small P-band. They can be combined with all RA 2000 valve bodies, ensuring a secure connection via a union nut.

Operation Principle: The operation involves components such as the actuator, bellows, setting dial, and capillary tube. The maximum ambient sensor temperature is 60°C.

Accessories: Various accessories are available, including manual setting knobs, limiting pins, anti-theft plugs, and adaptors for different valve types.

Conclusion: The RA series thermostatic sensors by Danfoss offer versatile and secure solutions for temperature control in heating systems, with options for customization and enhanced security features.