Resideo ZD8X26TZ Damper

The Resideo ZD8X26TZ is a heavy-duty, 8-inch wide by 26-inch high rectangular zone damper designed for precision airflow control in multi-zone HVAC applications. Built with a rigid extruded aluminum frame and parallel blades, this unit is engineered for low leakage performance, maintaining less than 1% leakage at 0.5 in. WC. This 24V motorized damper features a two-position, synchronous motor with a power closed/spring return open configuration, ensuring a fail-safe air path during power loss. The actuator is conveniently mounted on the 26-inch side and includes a mechanical visual position indicator for easy status monitoring. Ideal for integration with Honeywell TrueZONE panels, the ZD series supports 2-wire or 3-wire installations, offering adjustable range stops for fine-tuning minimum and maximum blade travel. With its all-metal drive train and high-temperature plastic housing, this normally open zone damper provides a reliable, high-torque solution for professional mechanical contractors.

• Fail-Safe Engineering: The spring return open design ensures critical airflow zones remain open if control power is interrupted.
• Superior Sealing: Features parallel blade action with extruded seals to minimize bypass air and optimize system efficiency.
• Simplified Wiring: Supports standard 24Vac two-wire installation (M1/M6) with a third-wire option (M4) for an LED status indicator.
• Contractor-Grade Durability: Constructed from corrosion-resistant extruded aluminum for long-term reliability in light commercial and residential ductwork.
• Quiet Operation: The synchronous motor and precise linkage eliminate the "clunking" sounds common in lower-quality dampers.

What is the fail-safe position of the ZD8X26TZ?
This is a normally open (NO) damper. It uses 24V power to drive the blades closed and a spring return mechanism to pull them back to the open position when de-energized.

Can I adjust the minimum airflow for this damper?
Yes. The motor includes adjustable range stops (wing nut assembly) that allow you to set a minimum bleed rate even when the damper is signaled to close.

Is this damper compatible with all zone boards?
While optimized for Honeywell TrueZONE HZ432, HZ322, and HZ311 panels, it is compatible with most 24Vac zoning systems that support power-close/spring-open logic.

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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.