Resideo VU844A1045 Actuator

Upgrade your hydronic systems with the Resideo VU844A1045 Actuator, a precision-engineered 24Vac fan coil actuator designed for reliable two-position control. This spring return valve actuator features an SPST control signal and a 45-degree stroke, ensuring fail-safe operation during power interruptions. Built for the rigorous demands of commercial HVAC environments, it serves as the direct replacement for ACT0372 and integrates seamlessly with VU52 series 2-way normally open or VU54 series 3-way valve bodies. The unit is housed in a stainless steel case with a durable aluminum cover, providing superior protection in condensing environments. With a 15-second maximum drive timing and 6-second spring return, this low voltage zone valve actuator offers the fast response required for modern hydronic heating systems. Installation is streamlined via 8-inch electrical leads and a manual operation lever for system testing and emergency bypass.

• Universal Compatibility: Engineered as a drop-in VU844A1045 replacement for ACT0372, saving time on field retrofits.
• Fail-Safe Reliability: The mechanical spring return operation ensures the valve returns to its safe position immediately upon signal loss.
• Rugged Construction: Features a stainless steel case and aluminum cover specifically designed to resist humidity and corrosion in fan coil units.
• Simplified Maintenance: Equipped with a manual operation lever and a quick-release button, allowing the actuator to be serviced without draining the hydronic loop.
• Technical Precision: Compact design allows for installation in tight baseboard convector enclosures and terminal reheat coil applications.

Is the Resideo VU844A1045 compatible with 3-way diverting valves?
Yes, this actuator is specifically designed to work with VU54 series 3-way valve bodies as well as VU52 series 2-way normally open configurations.

What are the wiring requirements for this fan coil actuator?
The VU844A1045 operates on 24Vac and utilizes a standard SPST (Single Pole Single Throw) control signal. It includes 8-inch leads for direct integration into the control circuit.

Can I operate the valve manually if the 24V power supply fails?
Yes, the actuator includes an external manual operation lever that allows technicians to manually open the valve. It automatically returns to the managed position once power is restored.

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.