Australia
New Zealand
Greece
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.
Advanced Application Controller (B‑AAC)
As defined in BACnet® 135‑2001 Annex L
EIA‑485 port for BACnet MS/TP communications
(baud rate selectable via DIP switches)
Binary Inputs (2)
Remote Occupancy Contact / Fan Status
Low‑Limit Thermostat
Analog Inputs (4)
Room Air Temperature (10k thermistor)
Supply Air Temperature (10k thermistor)
Outdoor Air Temperature (10k thermistor)
Changeover Switch (dry contact) or Changeover Sensor (10k thermistor)
(10‑bit A/D resolution)
Binary Outputs (5)
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
Cooling Valve / Electric Heat Stage 1 (2‑Pipe Electric Heat)
(Relay contacts rated 1A max @ 24 VAC/VDC, normally open)
Analog Outputs (3)
Mixed Air Damper
2‑Pipe / Heating Valve / Face‑and‑Bypass Damper
Cooling Valve
(0–10 VDC, 5 mA max, 8‑bit D/A resolution using filtered PWM)
It is designed for Carrier unit ventilators, including 40UV and 40UH models.
Yes. It supports BACnet MS/TP, allowing integration into open BAS environments.
Yes. With its on‑board clock, occupancy input, and sensor support, it can operate in stand‑alone mode.
Up to eight unit ventilators can be linked to a single room sensor.
Get directed to our Business Development team to start the authorization process and discuss sales support.
Get specialized help with system sizing, load
calculation analysis, and technical data required for project design.
Request support for warranty claims,
scheduled maintenance, and genuine spare
parts ordering.
For more information : ahi@ahi-carrier.com