Resideo by Honeywell ZD22X18TZ 22" x 18" Parallel Blade Zone Damper

The Resideo ZD22X18TZ is a power-close, spring-open zone damper featuring a 24-volt spring-return motor designed to control circulating air in heating, cooling, and ventilation systems. This damper is used when a normally-open damper configuration is required, making it ideal for residential HVAC zoning applications.

Key Features:

• Parallel blade design for low leakage performance
• Requires 24 Vac to power the damper closed; returns to normal open position once power is removed
• Adjustable damper position range stops
• Quiet operation
• Simple, easy-to-wire, two-wire operation
• Easy slip-in design
• Comes complete and ready for installation with motor and linkage factory-assembled
• Redesigned all metal drive train gears
• High temperature outer plastic for hot environments

Technical Specifications:

• Damper Size: 22 inches x 18 inches (nominal)
• Motor Electrical Rating: 24 Vac, 60 Hz, 8VA
• Motor Nominal Angular Rotation: 90°
• Motor Torque: Minimum 71 in.-oz.
• Operation Time: 30 seconds energized at rated load, 10 seconds de-energized (spring return)
• Maximum Static Pressure: 1 in. wc
• Leakage: Less than 1% at 1/2 in. wc
• All ZD dampers are 4 in. thick

The ZD is intended for use as a zone damper and is compatible with Honeywell Home TrueZONE zone control panels. Note that all ZD dampers are actually sized 5/32 in. smaller than the listed size to ensure correct fit in standard duct openings.