Resideo VC7931ZZ11 Modulating Actuator

The Resideo VC7931ZZ11 Modulating Actuator provides high-precision control for hydronic systems, including fan coil units, radiators, and convectors. Operating on a 24Vac power supply, this linear actuator accepts an analog (0)2-10 Vdc control signal to modulate flow with surgical accuracy. Designed with a double insulated plastic housing and an IP40 rating, the VC series actuator ensures a long service life by de-energizing the motor whenever it is not in motion. The twist-lock bayonet mount allows for seamless installation or replacement without the need to drain the system, provided the valve body remains intact. With a 60 psi close-off rating and a 120-second nominal timing, this direct coupled actuator is a staple for contractors managing complex commercial or residential HVACR infrastructure. Its universal compatibility with VC series valve bodies (1000, 3000, 6000, and 7000 series) streamlines inventory management for large-scale maintenance projects.

• Saves Time on Site: Quick-release latch mechanism and twist-off mounting allow for head replacement in seconds without breaking into the piping.
• Broad Compatibility: Works seamlessly with 2-way or 3-way valve bodies, offering linear flow characteristics for both mixing and diverting applications.
• Manual Override: Features a built-in manual opener lever to facilitate system filling, venting, or emergency operation during power failures.
• Reliable Performance: Electronic fail-safe (non-spring return) stays in place upon signal loss, preventing erratic system behavior in critical zones.
• Integrated Connectivity: Outfitted with a 1-meter (39-inch) plenum-rated cable for secure electrical connections in ceiling spaces.

Is this a direct replacement for Honeywell VC7931 series actuators?
Yes, as Resideo is the manufacturer of Honeywell Home products, this model is the direct professional-grade replacement for VC7931 series modulating heads using a 2-10V signal.

Does this actuator require a specific transformer?
The unit operates on 24V (50/60Hz) and consumes approximately 6 VA while driving. Ensure your transformer is sized correctly to handle the cumulative load of all zone actuators in the circuit.

Can I use this for both heating and cooling applications?
Absolutely. The VC7931ZZ11 is designed for fluid temperatures up to 203°F (95°C) and is suitable for hot water, chilled water, and up to 50% glycol concentrations.

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.