{"product_id":"ewc-controls-eurd-7-motorized-round-damper-7-inches","title":"Ewc Controls EURD-7 Motorized Round Damper 7 Inches","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe EWC CONTROLS EURD-7 is a 7-inch single-blade round motorized damper designed for zone control and air quality applications in ducted HVAC systems. The damper uses a 24-volt, two-position motor that is powered in both directions — powered open and powered closed — eliminating reliance on spring return. A 3-wire hookup (common, power-open leg, power-closed leg) connects the motor to a zone controller or control board. Built-in LED indicators display damper position: red for fully closed, green for fully open. These LEDs are failsafe-triggered, meaning they illuminate only when the blade has reached its full open or full closed position.\u003c\/p\u003e\n\u003cp\u003eThis motorized damper is suited for residential and light commercial forced-air HVAC zoning systems where positive blade positioning is required. It installs inline in round ductwork to control airflow to individual zones. The powered-both-ways motor design makes it appropriate for systems that require active shutoff as well as active opening, such as multi-zone VAV or zone-control setups managing indoor air quality or balanced airflow distribution.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003ePowered open and powered closed motor — no spring return required\u003c\/li\u003e\n  \u003cli\u003e24-volt, two-position motor with 3-wire connection (common, power-open, power-closed)\u003c\/li\u003e\n  \u003cli\u003eLED position indicators: red for closed, green for open\u003c\/li\u003e\n  \u003cli\u003eFailsafe LED logic — indicator does not illuminate until blade reaches full travel\u003c\/li\u003e\n  \u003cli\u003eSingle-blade round damper design for inline duct installation\u003c\/li\u003e\n  \u003cli\u003e7-inch round size for standard residential and light commercial duct applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-installation motorized damper for 7-inch round duct zoning systems controlled by 24-volt zone control boards.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by a licensed HVAC technician familiar with low-voltage zoning controls. Shut down the air handler or furnace and de-energize the control transformer before making any wiring connections. The 3-wire low-voltage connection must be routed to a compatible zone controller that supplies separate power-open and power-closed outputs. Refer to local mechanical codes and the zone controller manufacturer wiring diagram to confirm terminal assignments before energizing 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: Motorized Round Damper\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize\u003c\/strong\u003e: 7 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShape\u003c\/strong\u003e: Round\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMotor Voltage\u003c\/strong\u003e: 24 volts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMotor Type\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 \/ HVAC Zoning\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-7\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EWC CONTROLS","offers":[{"title":"Default Title","offer_id":51347273974066,"sku":"EURD-7","price":184.79,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310554840.jpg?v=1782100905","url":"https:\/\/voomisupply.com\/products\/ewc-controls-eurd-7-motorized-round-damper-7-inches","provider":"Voomi Supply","version":"1.0","type":"link"}