Ewc Controls EURD-14-MA15S Motorized Round Damper 14 in

Product Description

The EWC CONTROLS EURD-14-MA15S is a 14-inch single-blade round motorized damper designed for zoned HVAC air distribution systems. The unit uses a two-position, 24-volt motor that is powered in both directions — powered open and powered closed — providing positive blade control without relying on spring return. A 3-wire hookup connects to a common, a power-open leg, and a power-closed leg. LED position indicators on the motor display RED when the damper is fully closed and GREEN when fully open. These indicators activate only after the blade reaches its full travel position, functioning as a failsafe confirmation of blade status. Licensed HVAC technicians typically install this damper in residential or light commercial zoning applications.

This damper is suited for air quality and HVAC zoning applications where round duct distribution requires positive two-position control. The 14-inch round form factor fits standard round duct systems. The powered-open and powered-closed motor operation makes it appropriate for zone control panels and controllers that output 24-volt signals to drive damper movement in both directions. It is commonly installed in supply or return branch runs as part of a multi-zone air distribution setup.

Key Features

• Two-position 24-volt motor powered in both open and closed directions — no spring return required
• LED position indicators: RED for fully closed, GREEN for fully open
• Failsafe LED logic — indicators illuminate only after blade reaches full travel
• 3-wire motor connection with common, power-open, and power-closed legs
• Single-blade round damper design sized at 14 inches

Compatibility

Designed as an OEM-style motorized round damper for use in 24-volt HVAC zoning systems requiring a 14-inch powered two-position actuated damper.

Installation Notes

Installation should be performed by a licensed HVAC technician. Shut down the air handler and de-energize the 24-volt zone control circuit before wiring or mounting the damper. Confirm proper duct diameter match before seating the damper in the duct collar, and verify that the zone controller output matches the two-position powered-open and powered-closed wiring configuration before energizing. Follow applicable mechanical and low-voltage wiring codes for your jurisdiction.

Technical Specifications

• Product Type: Motorized Round Damper
• Size: 14 inches
• Shape: Round
• Motor Voltage: 24 volts
• Motor Operation: Two-position, powered open and powered closed
• Wires to Motor: 3
• Application: Air Quality / HVAC Zoning

Standard Information

• Brand: EWC CONTROLS
• Manufacturer Part Number: EURD-14-MA15S