Honeywell Blade Damper, Model: ZD, 24 V, 60 Hz, VA Rating: 8 VA, Parallel Blade, Push Terminal Electrical Connection, 30 s Power Open, 10 s Spring Return Timing Range, Aluminum, Side Mounting, Spring Open, Power Closed Motor, Square Shape, 1 in-WC Differential, 40 to 140 deg F Ambient, 3-61/64 in Length, 4-41/64 in Width, 4-31/32 in Height, Additional Information: 20 x 20 in Opening Size

• The ZD is a power close and spring open damper
• It has a 24 V motor used to control circulating air in HV systems and used when a normally open damper is required
• The ZD is typically used with the TrueZONE® and other electronic zoning systems
• 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 V spring return motor
• Fail safe, normally open operation
• Damper can be installed in any orientation
• Taping flange and non-interfering setscrew
• High temperature outer plastic for hot environments
• Redesigned all metal drive train gears
• Front facing display with LED indication light for open and close
• Adjustable damper position range stops
• 90 deg motor nominal angular rotation
• Less than 1% at 1/2 in-WC leakage
• Clockwise, when energized and viewed from the base or shaft end motor shaft rotation direction
• Direct connection to damper shaft
• Terminals M1-power, M6 common, M4 (optional) LED indication wires to motor