Core Features "GDE131" Series & Functional Design: The "GDE131" denotes Siemens’ entry-level electric linear actuator series, specialized for light-duty hydronic valve control. The "1P" model is a 230V AC-powered linear actuator with a 8 mm stroke length and 600 N thrust rating (≈61.2 kgf)—ideal for small 2-way hydronic valves (e.g., residential heating zone valves, small commercial water valves) where 230V mains power is readily available. Basic On/Off & Modulating Control: Equipped with straightforward control options to meet light-duty flow needs: On/off control (230V AC input): For simple full-open/full-close scenarios (e.g., residential zone heating valves), ensuring basic flow regulation with rapid actuation. Modulating control (0–10V DC input, optional): For variable flow applications (e.g., small commercial fan coil units), enabling precise valve opening adjustment with ±3% positioning accuracy—sufficient for non-critical temperature control. It includes optional analog position feedback (0–10V DC) for valve status monitoring, compatible with basic HVAC controllers or home automation systems. Compact & Lightweight Construction: Engineered with a flame-retardant plastic housing (UL94 V-0) and a lightweight design of 0.55 kg (1.21 lbs), suitable for direct valve mounting (via ISO 5211 standard flange) or bracket mounting in tight spaces (e.g., residential boiler closets, small HVAC enclosures). The housing features IP44 protection (dust-resistant, splash-proof), making it compatible with indoor residential and light commercial environments (e.g., apartment heating systems, small office hydronics). Safety & Reliability Features: Built with essential safeguards for stable operation: Overthrust protection: Automatically stops the motor if thrust exceeds 600 N (e.g., valve stem jamming from mineral buildup), avoiding damage to the valve or actuator. Thermal overload protection: Shuts down the motor in case of overheating (e.g., prolonged operation), extending component lifespan. 230V mains compatibility: Designed for direct connection to standard 230V AC (50/60 Hz) power supplies with ±10% voltage tolerance, eliminating the need for external transformers. Simplified Installation & Integration: Designed for plug-and-play setup with no complex programming—works with Siemens residential controllers (e.g., RLU series) and third-party basic thermostats via standard 230V on/off signals or 0–10V modulating signals. It includes a universal ISO 5211 flange (for direct valve mounting) and color-coded wiring terminals, reducing installation time to under 15 minutes for most residential applications. Typical Applications SIEMENS Actuator GDE131.1P is engineered for light-duty linear control of small hydronic valves—ideal for scenarios needing 600 N thrust, 8 mm stroke, and 230V mains power compatibility in residential or small commercial systems. Key use cases include: Residential Hydronic Zone Heating: Controlling 2-way zone valves in residential boiler-based heating systems (e.g., single-family homes, apartments). On/off control manages room-specific heating, while compact size fits boiler closets—complying with EN 12831 (residential heating design) and ASHRAE 90.2 (residential energy efficiency). Small Commercial Fan Coil Units (FCUs): Regulating valves in small FCUs for office cubicles or hotel rooms. Modulating control adjusts water flow to match room temperature, and IP44 protection withstands FCU enclosure moisture—complying with EN 14511 (air handling units and FCUs). Residential Water Heater Systems: Adjusting valves in residential tankless water heaters or solar water heating systems. Overthrust protection prevents damage from mineral deposits, and 230V mains connection simplifies installation—complying with EN 15502 (water heaters and storage tanks). Light Commercial Hydronic Systems: Controlling small valves in small retail stores or cafes for space heating. Simple on/off control meets basic temperature needs, and lightweight design fits tight mechanical spaces—complying with EN 15513 (HVAC hydronic components)