Ewc Controls EURD-6 Motorized Round Damper 6 Inches

Product Description

The EWC CONTROLS EURD-6 is a single-blade, round motorized damper designed for zone control and air quality applications in ducted HVAC systems. The unit operates on a 24-volt, two-position motor that is powered in both directions — powered open and powered closed — eliminating reliance on a return spring. A three-wire hookup connects to a common, a power-open leg, and a power-closed leg. Status LEDs on the motor provide visual position feedback: red indicates fully closed and green indicates fully open. These indicators only illuminate after the blade has reached its full open or full closed position, making them a true end-of-travel confirmation rather than a command signal. HVAC technicians and zone-control installers use this damper to regulate airflow in residential and light commercial zoning systems.

The EURD-6 is sized for 6-inch round ductwork and is suited for air quality and zone control installations where a reliable, visually confirmed two-position damper is required. The powered-open and powered-closed motor design makes it appropriate for applications where a spring-return failure mode is not acceptable. It is installed by licensed HVAC technicians as part of a multi-zone or IAQ control strategy.

Key Features

• Powered open and powered closed motor — no spring return required
• 24-volt, two-position motor for compatibility with standard zone control panels
• Three-wire hookup: common, power-open, and power-closed legs
• LED position indicators: red for fully closed, green for fully open
• LEDs activate only at full blade travel — true end-of-travel confirmation
• Single-blade round construction for 6-inch round duct applications

Compatibility

Designed as an OEM-style replacement or new-installation motorized damper for 6-inch round duct systems used in residential and light commercial HVAC zone control and air quality applications.

Installation Notes

Installation should be performed by a licensed HVAC technician. Shut down the air handling unit and de-energize the 24-volt control circuit before wiring or positioning the damper. Verify wire connections to the common, power-open, and power-closed terminals match the zone controller wiring diagram before applying power. Confirm LED status indication at startup to validate full blade travel in both directions.