The ZD is a power close and spring open damper. It has a 24-volt motor used to control circulating air in HVAC systems and used when a normally-open damper is required. The ZD is typically used with the TrueZONE and other electronic zoning systems.
resideo Parallel Blade Damper, 24 V, 60 Hz, VA Rating: 8 VA, Parallel Blade, Push Terminal Electrical Connection, 30 s Power Open, 10 s Spring Return Timing, 71 in-oz Torque, 0.0329 in-WC Pressure Drop, Aluminum, Side Mounting, Square Shape, 40 to 140 deg F, 12 in Width, 12 in Height
Catalog
VIDEO LINK- Mechanical visual position indicator for damper status
- Solid construction using extruded aluminum frame and blades
- Parallel blade design for low leakage performance
- Simple, easy-to-wire, two-wire installation
- Reliable, strong, 24-volt spring-return motor
- Fail-safe, normally open operation
- Damper can be installed in any orientation (mounting side can be on either the bottom or the side of the duct)