Resideo - Honeywell Home ZD18X8TZ Zone Control Damper

Zone Control Damper from Resideo - Honeywell Home ZD18X8TZ delivers precise HVAC zoning with a rectangular, parallel-blade design for 18 x 8 inch ducts. This Zone Control Damper combines reliability with compact mounting, offering spring return, fail-safe operation, and normally open configuration for seamless airflow management.

The 24-volt AC motor (60 Hz) draws 8 VA and delivers 71 in-oz of torque to sweep a 90° blade. With a 30-second power-open and 10-second spring-return timing, it responds quickly to zoning changes while maintaining quiet operation across a wide temperature range (40 to 140 °F).

Designed for HVAC systems with a maximum static pressure of 1 inch WC and a pressure drop under 0.0329 inch WC at 800 feet per minute, this damper maintains efficient airflow. Side-mount motor, LED indication option, and simple wiring (M1-Power, M6-Common, M4-LED optional) streamline installation and diagnostics.

• Rectangular, parallel blade damper for precise control
• Spring-return, fail-safe operation with normally open default
• Mechanical visual position indicator for quick status checks
• Low pressure drop and high static pressure tolerance (≤ 1 in WC)
• 24V AC motor with 30s power-open / 10s spring return timing