Ewc Controls END-18X8 Nd Motorized Damper 18x8 in 24V

Product Description

The EWC CONTROLS END-18X8 is an 18 x 8 inch rectangular motorized zone damper designed for residential and light commercial HVAC zoning systems. Operating on 24 volts, this ND series damper controls airflow in a designated duct zone, opening and closing on signal from a zone controller or thermostat. The side-mounted motor connects via a 3-wire hookup, and an integrated LED indicator lets the installer visually confirm damper operation during commissioning without additional test equipment. Nylon bushings reduce mechanical noise during operation, extending motor service life and minimizing homeowner callbacks.

The END-18X8 is suited for rectangular duct runs in forced-air zoning applications where air quality control and balanced distribution are required. The sturdier frame construction supports faster duct installation and a more secure fit in the duct opening. This damper is typically installed by licensed HVAC technicians as part of a multi-zone comfort system, making it appropriate for new construction and retrofit zoning projects alike.

Key Features

• LED status indicator allows visual confirmation of damper position during installation and checkout
• 24-volt operation compatible with standard low-voltage zone control systems
• 3-wire motor connection for straightforward wiring to zone controllers
• Side-mounted motor with nylon bushings for quieter, longer-lasting operation
• Reinforced rectangular frame for faster, more secure duct installation

Compatibility

Designed as an OEM-style replacement or new-installation motorized damper for rectangular duct zoning systems requiring a 24-volt, 3-wire motorized damper in an 18 x 8 inch duct opening.

Installation Notes

Installation of motorized zone dampers is typically performed by a licensed HVAC technician. Shut down the air handler and de-energize the 24-volt control circuit before making any wiring connections. Verify duct dimensions match the damper frame size before cutting or modifying ductwork. After installation, use the onboard LED indicator to confirm full open and full closed positions before returning the system to normal operation.

Technical Specifications

• Product Type: ND Motorized Damper
• Size: 18 x 8 inches
• Shape: Rectangle
• Voltage: 24 volts
• Wires to Motor: 3
• Motor Mount: Side
• Features: LED indicator light
• Application: Air quality zone control

Standard Information

• Brand: EWC CONTROLS
• Manufacturer Part Number: END-18X8