ZoneFirst AOBD-18X10 Damper

The ZoneFirst AOBD-18X10 is a heavy-duty 18x10 rectangular damper engineered for precise airflow management in residential and light commercial zoning systems. Utilizing an opposed blade design, this unit ensures superior air distribution by counter-rotating blades to minimize turbulence and static pressure compared to standard parallel configurations. The damper is driven by a high-torque 24Vac power open/power closed actuator mounted on the 10-inch side, ensuring positive seal and reliability. Integrated built-in end switches provide essential feedback for equipment sequencing, allowing technicians to verify damper position before firing burners or compressors. Built with a rigid extruded aluminum frame and gasketed blades, this HVAC motorized damper is designed for longevity in high-velocity plenums. Operating on standard low voltage wiring, it integrates seamlessly with most 24V zoning panels. Please note that this specific configuration is non-cancelable and non-returnable; confirm your duct clearances and transformer VA ratings prior to installation.

Key Performance Benefits

• Opposed blade movement provides balanced airflow and reduced noise across the duct cross-section.
• Internal gaskets on blade edges significantly reduce air bypass when in the closed position.
• Dual end switches allow for simplified auxiliary control and status monitoring.
• Extruded aluminum construction offers high corrosion resistance and structural integrity.

Common Installation Questions

Can the actuator be replaced without removing the damper?
Yes, the 24V actuator is field-replaceable, allowing for fast service without breaching the ductwork.

What is the purpose of the end switches on this model?
The end switches act as dry contacts to signal the air handler or zone panel once the damper has reached its full travel limit.

How does "power open/power closed" differ from spring return?
This unit requires a 24V signal to move in either direction, providing more consistent torque and preventing the "slamming" sometimes associated with spring-return failsafe models.

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.