Carrier 33ZCVAVTRM Controller

The Carrier 33ZCVAVTRM Duct Air Terminal Zone Controller is a high-performance pressure independent (VAV) control solution engineered for single-duct terminals. As a core component of the Carrier ComfortID system, this controller utilizes advanced Proportional Integral Derivative (PID) control algorithms to maintain precise airflow between 10% and 125% of nominal cfm. It is designed to mount directly onto VAV box damper shafts (3/8" to 1/2"), with an integrated actuator providing 35 lb-in of torque. Supporting up to 9,000 cfm, it handles modulating hot water, multi-stage electric heat, or perimeter heating with ease. The unit integrates seamlessly into the Carrier Comfort Network (CCN), supporting high-speed 38.4 kilobaud communication and global setpoint scheduling. For technicians, the automatic self-calibration of the airflow transducer and removable power/comm connectors simplify HVAC zone controller installation and terminal balancing.

• Precise Airflow Regulation: Delivers ±3% accuracy across the entire operating range for superior zone stability.
• Streamlined Integration: Factory-assembled actuator and CCN protocol compatibility reduce field labor during commissioning.
• Versatile Heat Support: Manages floating hot water or up to 2-stage electric heat for varied commercial applications.
• IAQ Ready: Fully supports demand controlled ventilation when paired with field-installed CO2 or humidity sensors.
• Field-Proven Reliability: Features a UL94-5V plenum-rated housing and non-volatile memory for configuration retention.

Does this controller require a specific temperature sensor?
Yes, for heating or stand-alone operation, a 33ZCSENSAT supply air temperature sensor is required. Standard space temperature monitoring requires a compatible 10k ohm thermistor sensor.

Can I use this for dual-duct applications?
The 33ZCVAVTRM is specifically for single-duct terminals. For dual-duct or zone pressurization, it must be paired with a 33ZCSECTRM secondary terminal controller.

What are the power requirements for this unit?
The controller operates on 24 VAC (±10%) at 40 VA. Ensure your transformer is sized to handle auxiliary loads like water valves or fan contactors.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.