{"product_id":"ewc-controls-eurd-8-ma15s-motorized-round-damper-8-inches","title":"Ewc Controls EURD-8-MA15S Motorized Round Damper 8 Inches","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe EWC CONTROLS EURD-8-MA15S is an 8-inch round motorized damper with a single-blade design and a two-position, 24-volt motor. The motor is powered in both directions — powered open and powered closed — making it a fully actuated unit rather than a spring-return design. An integrated LED indicator system shows blade position in real time: red when fully closed, green when fully open. These indicators only illuminate once the blade has reached its full travel position, providing a reliable visual confirmation of damper state. HVAC technicians install this unit in residential and light commercial zoning and air quality applications.\u003c\/p\u003e\n\u003cp\u003eThe EURD-8-MA15S is suited for duct systems where positive control of airflow in both directions is required. Its 8-inch round form factor fits standard round ductwork used in forced-air zoning systems. The three-wire motor hookup — common, power-open leg, and power-closed leg — integrates with typical 24-volt zone control boards and panel wiring. This makes it a practical choice for new zoning installations as well as retrofit projects where spring-return dampers are being replaced with fully powered actuators.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eTwo-position motor: powered open and powered closed — no spring return required\u003c\/li\u003e\n  \u003cli\u003e24-volt motor compatible with standard low-voltage zone control wiring\u003c\/li\u003e\n  \u003cli\u003eLED position indicators: red for closed, green for open\u003c\/li\u003e\n  \u003cli\u003eIndicators activate only at full blade travel — confirms complete open or close stroke\u003c\/li\u003e\n  \u003cli\u003eThree-wire hookup: common, power-open, and power-closed legs\u003c\/li\u003e\n  \u003cli\u003eSingle-blade round damper design for 8-inch round ductwork\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in 8-inch round duct systems in residential and light commercial HVAC zoning and air quality applications. Compatible with standard 24-volt zone control panels that support powered-open and powered-closed damper wiring.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed HVAC technician familiar with low-voltage zone control wiring. Shut down the air handler and de-energize the control panel before making any wiring connections. The three-wire connection requires a dedicated common, power-open, and power-closed circuit from the zone controller — verify the controller supports fully powered actuators before installation. Confirm full blade travel and correct LED indication after powering up the system.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct Type\u003c\/strong\u003e: URD Motorized Damper\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShape\u003c\/strong\u003e: Round\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize\u003c\/strong\u003e: 8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMotor Voltage\u003c\/strong\u003e: 24 volts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMotor Positions\u003c\/strong\u003e: Two-position (powered open and powered closed)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWires to Motor\u003c\/strong\u003e: 3 (common, power-open, power-closed)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePosition Indicators\u003c\/strong\u003e: LED (red = closed, green = open)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Air Quality\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: EWC CONTROLS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: EURD-8-MA15S\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EWC CONTROLS","offers":[{"title":"Default Title","offer_id":51346876662066,"sku":"EURD-8-MA15S","price":187.57,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310554834.jpg?v=1782093225","url":"https:\/\/voomisupply.com\/products\/ewc-controls-eurd-8-ma15s-motorized-round-damper-8-inches","provider":"Voomi Supply","version":"1.0","type":"link"}