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.