Siemens 570-811PA PRC-OAVS Programmable BACnet Pressurized Room Controller

Siemens 570-811PA PRC-OAVS Programmable BACnet Pressurized Room Controller is a BACnet-enabled control module that manages room pressurization and climate control for laboratories and fume hood environments by coordinating with the PRC-OAVS system. It implements pressurization control by differential flow reset, provides BTU compensation heating, and uses slow-speed damper actuation to regulate supply and exhaust flows. The unit offers flexible signaling with floating or 0–10 V analog output options to drive dampers, reheat, or radiation devices, and it supports discharge-temperature sequencing with radiation control in configurations that include reheat and radiation. Listed for UUKL smoke-control applications, the PRC-OAVS family ensures containment by maintaining a defined pressure relationship between spaces. Typical applications include labs, cleanrooms, and fume-hood suites where precise pressure control is essential to prevent cross-contamination, while BACnet compatibility allows integration into building automation systems for centralized monitoring and control. The 570-811PA designation identifies the pressurized-room controller variant of Siemens’ PRC-OAVS line, designed to work with associated air-modulation hardware and the broader Siemens BACnet control ecosystem for reliable, programmable room-pressurization management.