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Optimizer Unitary Controller

This device is a Honeywell Optimizer Unitary Controller, a versatile building automation controller designed for managing HVAC systems like air handling units, chillers, and boilers.

Key Capabilities
  • Protocol Support: It is a native BACnet controller that supports both BACnet IP and BACnet MS/TP, allowing it to integrate seamlessly into modern building management systems (BMS) like Honeywell Niagara.
  • Flexible I/O: Features a mix of Universal Inputs/Outputs (UIOs) and Relay Outputs. These can be configured for various sensors (temperature, pressure, humidity) and control devices (actuators, fans, pumps).
  • Communication: Includes integrated ports for RS485 (for MS/TP) and often dual Ethernet ports with a built-in switch for daisy-chaining network connections.
  • Removable Terminal Blocks: The color-coded orange and purple connectors are removable, which simplifies installation and maintenance.
Typical Applications
  • Air Handling Unit (AHU) control
  • Central Plant management (chillers/boilers)
  • Complex rooftop units
  • Integration with field devices like the outdoor air sensors and valve actuators you were previously looking at.
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Optimizer Unitary Controller

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