. Equipped with anti-rotation and drive shaft extensions for direct mounting to 7/16 inch diameter coupling style dampers. . Adjustable range stops. . Size (inch) - 3-1/2 inch high x 2-3/8 inch wide x 3-3/8 inch deep . Motor Mount - Direct connection to damper shaft . Motor Type - spring return (damper can be either spring open or spring closed) . Wires to Motor - 2 wires . Other Motor Information - Two Position, spst;60 in.-oz (423 mNm) at spring returned initial start position; 90 degrees rotation;Spring Return - 10 seconds de-energized, 30 seconds energized . Electrical Connections - 2 wires . Frequency - 60 Hz . Replaces - RDMH damper actuators; RDMZ damper actuators . Includes - Anti-rotation and drive shaft extensions bag assembly to be compatible with ZD and ARD dampers . Used With - ZD dampers; ARD dampers . Used in Trolatemp systems . REPLACES HONEYWELL M847D1004
I have a 3 zone forced air HVAC system. One of the damper motors went bad and instead of calling a my furnace repair service, I wanted to see if I could change this on my own. Instructions were thorough and the change over was easy.
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Original actuator motor failed in my zoned HVAC system. I ordered this replacement and it works better than the original. It is quieter and appears to be more responsive to controller signals.
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We have a three zone central cooling/heating system with six of these ARD actuators. Two of our actuators stuck in the close position. It was a easy five minutes job to replace each actuator. But make sure you have a 1/8 inch hex wrench which is required to replace the actuator.
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Very pleased with product. If there is one thing I could change, it would be to make it capable of full disassembly so that a broken spring could be replaced.
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