Ewc Controls END-12X10-MA15S Motorized Zone Damper 12x10

Product Description

The EWC CONTROLS END-12X10-MA15S is a motorized zone damper from the ND series Ultra-Zone line, built for residential and light-commercial HVAC zoning applications. This round-cornered rectangular damper ships ready for duct installation and features a 3-wire power open/power closed actuator rated at 17 inch-pounds of torque. Overlapping blades deliver a 97 percent leak-proof seal, minimizing conditioned-air bleed into unoccupied zones. Nylon bushings reduce operating noise and extend motor service life. An onboard LED display lets the installing technician verify blade position and actuator status without extra test equipment, and fail-safe LEDs support rapid diagnostics. The quick-connecting terminal block eliminates wire nuts during rough-in.

This damper is intended for installation in rectangular duct systems serving multi-zone forced-air heating and cooling setups. It pairs directly with the Ultra-Zone zoning control platform. Typical install scenarios include residential split systems and packaged units where individual zones require independent airflow regulation. The 12-inch by 10-inch blade size suits medium trunk or branch duct runs commonly found in two- to four-zone residential zoning projects. Licensed HVAC technicians and mechanical contractors handle field installation as part of a complete zoning system retrofit or new-construction mechanical rough-in.

Key Features

• 3-wire power open/power closed operation for positive blade control in both directions
• 97 percent leak-proof rating with overlapping blade design
• 17 inch-pounds of motor torque with manual gear release for service access
• LED display for visual damper position verification during commissioning
• Nylon bushings for quieter operation and extended motor life
• Quick-connecting terminal block eliminates wire nuts and speeds wiring
• UL listed actuator motor with NEMA Class 2 certification

Compatibility

Designed for use with the EWC Controls Ultra-Zone zoning system. Suited as an OEM-style motorized damper for rectangular duct zoning installations where a 12-inch by 10-inch power open/power closed damper is specified.

Installation Notes

Installation is performed by a licensed HVAC technician or mechanical contractor. Power down the air handler and de-energize the zone control board before wiring the actuator to the terminal block. Verify duct dimensions match the damper frame size before cutting into existing ductwork, and follow local mechanical codes for duct penetrations and support. The manual gear release on the actuator allows blade positioning during system checkout without energizing the motor.

Technical Specifications

• Blade Size: 12 inches x 10 inches
• Operation Type: Power Open / Power Closed, 3-wire
• Motor Torque: 17 inch-pounds
• Leak Rating: 97 percent leak-proof
• Motor Certification: UL Listed, NEMA Class 2
• Bushing Material: Nylon
• Package Length: 17 inches
• Package Width: 14 inches
• Package Height: 7 inches
• Weight: 5.3 pounds

Standard Information

• Brand: EWC CONTROLS
• Manufacturer Part Number: END-12X10-MA15S