Carrier’s Unit Vent Open controller is an integrated component of a Carrier unit ventilator. The Unit Vent Open controller continuously monitors and regulates unit ventilator operation with reliability and precision. This advanced controller features a sophisticated, factory engineered control program that provides optimum performance and energy efficiency.
For added flexibility, the Unit Vent Open controller is capable of stand-alone operation, or it can be integrated with any Building Automation System utilizing the BACnet protocol.
Product Integrated Controller
Integrated controller for unit ventilators capable of stand-alone operation or integrated with Carrier’s or any building automation system using BACnet®, Modbus® or Lonworks® protocol.
| BACNet Support | Advanced application controller (B-AAC), as defined in BACNet 135-2001 Annex L |
| Communication Ports |
Network Port: EIA-495 port for BACnet MS/TP communications (baud rate is SIP switch selectable) Comm Option port: For connecting a LON Option Card (future) Local Access port: For system start-up and troubleshooting (115.2 kbps) Rnet port: For connecting Carrier communicating room sensors and Carrier's touchscreen user interface |
| Inputs |
2 binary inputs: Remote Occupancy Contact/Fan Status and Low Limit Thermostat 4 analog inputs: RAT (10k thermistor), SAT (10k thermistor), OAT (10k thermistor) and Changeover Switch (dry contact)/changeover sensor (10k thermistor). AIs have 10 bit A/D resolution. |
| Outputs |
5 binary outputs: High speed fan, Medium Speed Fan (or Stage 3 Electric Heat), Low Speed Fan (or Stage 2 Electric Heat), 2-Pipe Valve/Heating Valve/Electric Heat Stage 1, and Cooling Valve/Electric Heat Stage 1 with 2-Pipe Electric Heat. Relay contacts rated at 1 A max. @ 24VAC/VDC, configured normally open. 3 analog outputs: Mixed Air Damper, Two-Pipe/Heating Valve/F&B Damper, and Cooling Valve. AOs rated at 0-10VDC 5mA max with 8 bit D/A resolution using filtered PWM. |
| Protection | Incoming power and network connections are protected by non-replaceable internal solidstate polyswitches that reset themselves when the condition that causes a fault returns to normal. The power, network, input, and output connections are also protected. |
| Real Time Clock | Battery-backed real time clock keeps track of time in event of power failure against voltage transient and surge events. |
| Battery | 10-year Lithium CR2032 battery provides a minimum of 10,000 hours of trend data & time retention during power outages. |
| Status Indicators | LED status indicators for communications, run status, error, power, and all digital outputs. |
| Controller Addressing | Rotary DIP switches set BACnet MS/TP MAC address of controller. |
| Listed By | UL-916 (PAZX), cUL-916 (PAZX7), FCC Part 15-Subpart B-Class A, CE EN50082-1997 |
| Environmental Operating Range |
Operating: 0° to 140°F (-18° to 54°C), 10-90% relative humidity, non-condensing Storage: -24°F to 140°F (-30° to 60°C), 10-90% relative humidity, non-condensing |
| Power Requirements |
24VAC +/- 10%, 50-60Hz 18VA power consumption 26VDC (25V min, 30V max Single Class 2 source only, 100VA or less |
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