Ewc Controls EURD-6-MA15S 6 Inch Round Motorized Damper

Product Description

The EWC CONTROLS EURD-6-MA15S is a single-blade, round motorized damper designed for 6-inch duct applications in residential and light commercial HVAC zoning and air quality systems. The unit features a two-position, 24-volt motor that is powered in both directions — powered open and powered closed — eliminating reliance on a spring-return mechanism. The 3-wire configuration uses a common wire, a power-open leg, and a power-close leg, giving the installer precise directional control over airflow. This damper is installed by licensed HVAC technicians as part of zone control or indoor air quality setups.

The EURD-6-MA15S is suited for round duct systems where positive damper positioning is required in both open and closed states. Its 6-inch diameter fits standard round duct fittings commonly found in residential forced-air systems and light commercial zoning applications. The powered-both-ways motor design makes it well-suited for IAQ systems, fresh air intake control, and multi-zone HVAC configurations where fail-safe spring-return operation is not preferred or required.

Key Features

• Two-position, 24-volt motor powered open and powered closed — no spring return required
• 3-wire hookup: common, power-open leg, and power-close leg for direct directional control
• Single-blade round damper design sized for 6-inch round duct
• Suitable for air quality, zoning, and fresh air control applications
• Compatible with standard 24-volt HVAC control systems

Compatibility

Designed as an OEM-style motorized damper for use in 6-inch round duct HVAC zoning and air quality systems operating on 24-volt control circuits.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect power to the air handler and zone control panel before wiring or mounting the damper. Verify that the 24-volt control transformer has adequate VA capacity to support the powered-both-ways motor load. Follow local mechanical codes and the zone controller manufacturer wiring diagram when connecting the common, power-open, and power-close leads.

Technical Specifications

• Product Type: URD Motorized Damper
• Shape: Round
• Size: 6 inches
• Motor Voltage: 24 volts
• Motor Operation: Two-position, powered open and powered closed
• Wires to Motor: 3
• Application: Air Quality

Standard Information

• Brand: EWC CONTROLS
• Manufacturer Part Number: EURD-6-MA15S