Ewc Controls END-8X10-MA15S Nd Series Motorized Zone Damper

Product Description

The EWC CONTROLS END-8X10-MA15S is an 8-inch by 10-inch motorized zone damper from the ND Series Ultra-Zone line. It is designed for HVAC zoning systems and controls airflow by opening and closing on command via a 3-wire power-open/power-closed motor. The motor delivers 17 inch-pounds of torque and includes a manual gear release, fail-safe LED indicators for quick diagnostic checks, and a UL-listed, NEMA Class 2 certified drive assembly. Nylon bushings reduce noise during operation. The unit carries a 97% leak-proof rating, achieved through overlapping blades and a firm positive-off motor stop. HVAC technicians and zoning system installers are the primary trade professionals who specify and install this damper.

The END-8X10-MA15S fits into rectangular HVAC ductwork measuring 8 inches by 10 inches. It is intended for use in residential zoning applications, typically paired with a compatible Ultra-Zone zoning control system. An easy-access terminal block with quick-connect terminals eliminates the need for wire nuts, streamlining field wiring during installation. The LED display on the motor head allows the technician to confirm damper position and verify operation at checkout without additional test equipment. The sturdier frame design is built to reduce installation time and improve long-term reliability.

Key Features

• 3-wire power-open/power-closed motor operation for reliable zone control
• 17 inch-pounds of motor torque with manual gear release for service access
• Fail-safe LED indicators for fast on-site diagnostics
• 97% leak-proof rating via overlapping blade design and positive-off motor
• Nylon bushings for quieter operation and reduced long-term wear
• Quick-connect terminal block eliminates wire nuts and speeds field wiring
• UL-listed and NEMA Class 2 certified motor assembly

Compatibility

Designed for use with the EWC CONTROLS Ultra-Zone zoning system. Fits 8-inch by 10-inch rectangular duct openings. Intended as a component in residential HVAC zoning installations requiring power-open/power-closed motorized damper control.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with forced-air zoning systems. Power to the air handler and zoning control panel must be shut off before mounting the damper or making any wiring connections. Use the quick-connect terminal block for all low-voltage control wiring, and confirm damper blade travel and LED status indicators before restoring power and closing the system. Follow local mechanical codes and the zoning control manufacturer wiring diagrams for proper zone sequencing.

Technical Specifications

• Duct Size: 8 x 10 inches
• Motor Operation: 3-wire power-open/power-closed
• Motor Torque: 17 inch-pounds
• Leak Rating: 97% leak-proof
• Motor Certification: UL Listed, NEMA Class 2
• Length: 17 inches
• Width: 14 inches
• Height: 7 inches
• Weight: 4.6 pounds

Standard Information

• Brand: EWC CONTROLS
• Manufacturer Part Number: END-8X10-MA15S