Ewc Controls EURD-10-MA15S Urd Motorized Damper 10 in

Product Description

The EWC CONTROLS EURD-10-MA15S is a 10-inch round, single-blade motorized damper designed for zone control and air quality applications in ducted HVAC systems. The actuator operates on 24 volts and uses a powered-open, powered-closed two-position motor, meaning it requires power in both directions rather than relying on a spring return. A 3-wire connection (common, power-open, power-closed) keeps wiring straightforward. Onboard LEDs provide real-time position feedback: red indicates fully closed, green indicates fully open. These indicators are failsafe-confirmed, meaning they illuminate only after the blade has reached its full travel position.

This damper is suited for residential and light commercial ducted air systems where zone control or air quality management is required. The round profile fits standard 10-inch round ductwork. HVAC technicians typically install this unit as part of a multi-zone control system, tying the actuator wiring back to a zone control board or thermostat interface. It is appropriate for forced-air systems requiring reliable, electrically confirmed blade positioning.

Key Features

• Powered-open and powered-closed operation eliminates spring-return dependency
• LED position indicators: red for fully closed, green for fully open
• Indicators are failsafe-confirmed — only illuminate at full blade travel
• 3-wire hookup: common, power-open leg, power-closed leg
• 24-volt motor compatible with standard zone control boards
• Round single-blade design sized for 10-inch duct

Compatibility

Designed as an OEM-style replacement or new-installation motorized damper for 10-inch round ducted HVAC zone control systems operating on 24-volt control wiring.

Installation Notes

Installation is performed by a licensed HVAC technician. Power down the air handler and de-energize the zone control board before wiring or mounting the damper. The 3-wire connection must be routed to a compatible 24-volt zone controller; confirm polarity and wire assignments at the control board terminals before energizing. Verify blade travels to full open and full closed positions and that the corresponding LEDs illuminate before closing up the duct.

Technical Specifications

• Product Type: URD Motorized Damper
• Shape: Round
• Size: 10 inches
• Motor Voltage: 24 volts
• Motor Operation: Two-position, powered open and powered closed
• Wires to Motor: 3 (common, power-open, power-closed)
• Position Indicators: LED (red = closed, green = open)
• Application: Air Quality / Zone Control

Standard Information

• Brand: EWC CONTROLS
• Manufacturer Part Number: EURD-10-MA15S