Description
The Siemens Building Technology 540-865EN is a Terminal Equipment Controller (TEC) engineered for Variable Air Volume (VAV) HVAC applications in commercial building automation systems. Combining a 0–10V analog output for precise damper or actuator control, integrated heating modulation, and CO2-based demand-controlled ventilation, this controller delivers intelligent, energy-efficient zone management in a single device.
Key Features
- Designed for Variable Air Volume (VAV) terminal unit control in commercial HVAC systems
- 0–10V analog output (AO) for smooth, proportional control of downstream actuators or heating valves
- Integrated heating modulation (HT MOD) for accurate temperature regulation in heating mode
- Built-in CO2 sensing capability enables demand-controlled ventilation (DCV) to optimize indoor air quality and reduce energy consumption
- Part of the Siemens TEC (Terminal Equipment Controller) product family for building automation
- Supports BACnet or compatible open-protocol communication for seamless integration into building management systems (BMS)
- Compact, application-specific design simplifies installation and commissioning
Applications
- Commercial office buildings and multi-zone HVAC systems
- Demand-controlled ventilation (DCV) zones requiring CO2 monitoring
- VAV reheat terminal units with modulating hot water or electric heat
- Building automation and energy management system integrations
Why Choose the Siemens 540-865EN?
The 540-865EN consolidates VAV airflow control, heating modulation, and CO2-based ventilation management into one controller, reducing wiring complexity and panel space while improving zone-level comfort and energy performance. Backed by Siemens Building Technology’s proven track record in commercial controls, this TEC is a reliable choice for new construction and retrofit projects alike.
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