Ewc Controls EURD-14 Urd Motorized Round Damper 14 in

Product Description

The EWC CONTROLS EURD-14 is a single-blade, round motorized damper designed for two-position zone control in HVAC air distribution systems. The unit operates on 24 volts and uses a powered motor in both directions — powered open and powered closed — eliminating reliance on spring return. A 3-wire hookup connects via common, power-open, and power-closed legs. Built-in LED indicators display blade position: red signals fully closed and green signals fully open. These LEDs are failsafe-referenced, meaning they illuminate only after the blade reaches its full open or full closed position, giving technicians a reliable visual confirmation during commissioning and service.

The EURD-14 is suited for residential and light commercial HVAC zoning applications where air quality control and precise damper positioning are required. With a 14-inch round form factor, it fits standard round duct runs in forced-air systems. HVAC technicians typically install this damper as part of a zone control system, integrating it with a zone control board and low-voltage thermostat wiring. The two-position, 24-volt design makes it compatible with most standard zone control panels that support powered-open, powered-closed damper operation.

Key Features

• Two-position motor operation: powered open and powered closed — no spring return required
• 24-volt motor compatible with standard low-voltage zone control systems
• 3-wire connection: common, power-open leg, and power-closed leg
• LED position indicators — red for closed, green for open
• Failsafe LED logic: indicators illuminate only at full blade travel, confirming complete actuation
• 14-inch round single-blade design for standard round duct installation

Compatibility

Designed as an OEM-style motorized round damper replacement or new-install component for 24-volt HVAC zone control systems requiring powered-open, powered-closed two-position damper operation.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect and lock out power to the air handler and zone control panel before installing or servicing the damper. Verify that the zone control board supports powered-open, powered-closed operation on the 24-volt damper output before wiring. Follow local mechanical codes and the zone control manufacturer wiring diagram when connecting the 3-wire motor leads.

Technical Specifications

• Product Type: URD Motorized Damper
• Shape: Round
• Blade Type: Single blade
• Size: 14 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-14