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| Blade Type | : | Parallel |
| Electrical Connection | : | 3-Wire |
| Frequency Rating | : | 50/60 Hz |
| Material | : | Aluminum |
| Model | : | ND |
| Motor Type | : | Spring |
| Mounting Type | : | Duct |
| Power Rating | : | 1 W |
| Pressure Rating | : | Up to 1.5 in-WC |
| Rated Velocity | : | 1500 fpm |
| Shape | : | Rectangular |
| Size | : | 20 x 8 in |
| Timing Range | : | 35 s |
| Torque Rating | : | 18 in-lb |
| VA Rating | : | 1.5 VA |
| Voltage Rating | : | 24 VAC/VDC |
The ND Series of ultra-zone dampers was designed with the installer and homeowner in mind. This damper is easy-to-install and easy to checkout. The LED display allows the installer to visually check the damper operation. With a sturdier frame, the damper installs in the duct much faster and easier and the nylon bushings insure quieter operation. This is a feature that homeowners will never hear about quieter operation and a longer life motor equals NO call backs.
EWC® Motorized Damper, Model: ND, 20 x 8 in, 24 VAC/VDC, 50/60 Hz, 1 W, VA Rating: 1.5 VA, Parallel Blade, Aluminum, Duct Mounting, Spring Motor, Rectangular Shape, 3-Wire Electrical Connection, 1500 fpm Rated Velocity, 35 s Timing Range, 18 in-lb Torque, Up to 1.5 in-WC
- The ND damper is constructed using heavy-duty 0.8 in extruded aluminum
- Nylon bearings for quiet operation
- Overlapping parallel blade design
- Reliable operation up to 1.5 in-WC and 1500 fpm duct velocities
- The UL Listed motor actuator
- 24 VAC 3-wire power open/power close or floating function
- The motor actuator is rated at 18 in-lb of torque, superior to low torque spring-type motors
- The motor actuator housing is rated NEMA 1
- Integrated end stop adjustment allows a percentage of relief air (leakage) when the damper is powered closed
- You may set a maximum open position as well, which is useful during test and balancing procedures
- Bright green and red LED's indicate damper open and closed position