Zonefirst ZDS-22X14 22WX14H Parallel 24V 2-Pos S/R

The Zonefirst ZDS-22X14 is a professional-grade side-mount rectangular zone damper engineered for high-static residential and commercial air handling systems. Featuring a 22-inch width by 14-inch height configuration, this parallel blade damper is constructed from heavy-duty extruded aluminum with mitered corners for maximum structural rigidity. The unit operates on a 24V two-wire system, utilizing a power-close spring-return (S/R) actuator that ensures the damper defaults to an open position during power loss for fail-safe ventilation. Designed for seamless integration with 24V zone control panels, the motor is mounted on the 14-inch height dimension, making it ideal for tight plenum transitions. Each 3-inch blade pivots on self-lubricating bushings, providing quiet, maintenance-free operation under pressures up to 1.0" W.C. Technicians can easily perform field conversions to power-open/spring-close if system logic requires, and the integrated minimum position adjustment allows for precise bypass airflow tuning without the need for additional bleed-off components.

• Fail-Safe Operation: The spring return actuator defaults to the open position, protecting HVAC equipment during power outages or controller failures.
• Precision Airflow Control: Parallel blade design reduces turbulence and provides reliable shut-off for improved thermal zoning efficiency.
• Simplified Installation: Two-wire 24V wiring reduces labor time and complexity when retrofitting older zoning systems.
• Robust Construction: Extruded aluminum frames and self-lubricating bushings prevent binding and extend the lifecycle of the mechanical assembly.
• Adjustable Minimum Position: On-board set screw allows for a calibrated air leak to satisfy minimum airflow requirements across the heat exchanger.

Is the ZDS-22X14 field convertible?
Yes, the Zonefirst ZDS series allows contractors to reverse the actuator orientation in the field to switch between power-close and power-open configurations.

What are the actual dimensions for duct fitting?
Standard Zonefirst dampers are manufactured approximately 1/4 inch undersized from the nominal 22x14 dimensions to ensure a proper fit within the ductwork without jamming.

Can this damper be used in high-pressure systems?
The ZDS-22X14 is rated for static pressures up to 1.0" W.C., making it suitable for most standard residential and light commercial forced-air applications.

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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.