Ewc Controls Nd 18X8 Motorized Damper 18x8 in Rectangular 24V

Product Description

The EWC CONTROLS ND 18X8 is a rectangular motorized zone damper designed for 24-volt HVAC zoning systems. Measuring 18 inches by 8 inches, it fits standard rectangular ductwork and controls airflow in multi-zone forced-air systems. The damper uses a side-mounted motor with a 3-wire connection and features an LED indicator that allows the installer to visually confirm damper operation without removing the unit from the duct. Nylon bushings reduce operational noise, and the reinforced frame speeds up duct installation. The motor is rated for long service life, reducing callback risk after commissioning.

The ND 18X8 is suited for residential and light-commercial HVAC zoning applications where airflow to individual zones must be controlled independently. It is intended for installation in rectangular supply or return duct runs as part of a multi-zone system. The LED status light is particularly useful during system checkout, letting the technician confirm blade position from a visible distance. HVAC zoning contractors and mechanical installers are the primary trade installing this damper in new construction and retrofit zoning projects.

Key Features

• LED indicator light confirms damper blade position during installation and checkout
• Side-mounted motor with 3-wire connection for standard 24-volt zone control wiring
• Nylon bushings provide quieter operation compared to standard metal-bushing dampers
• Reinforced frame design speeds duct insertion and reduces installation time
• Rectangular 18-inch by 8-inch profile fits common duct sizing
• Long-life motor design reduces service callbacks

Compatibility

Designed as an OEM-style replacement or new-installation motorized damper for rectangular 24-volt HVAC zoning systems requiring a side-mount motor configuration.

Installation Notes

Installation should be performed by a licensed HVAC technician following applicable mechanical codes. Power the zone control board down before wiring the damper motor to avoid control board damage. Confirm duct dimensions match the 18-inch by 8-inch damper frame before insertion. Use the LED indicator during system startup to verify blade travel and confirm proper zone controller communication.

Technical Specifications

• Product Type: Motorized Damper
• Size: 18 inches x 8 inches
• Shape: Rectangle
• Voltage: 24 volts
• Wires to Motor: 3
• Motor Mount: Side
• Features: LED Light
• Application: Air Quality / HVAC Zoning

Standard Information

• Brand: EWC CONTROLS
• Manufacturer Part Number: ND 18X8