Honeywell M847D1012 Damper Actuator
List Price: $160.23 Sale Price: $112.50
Honeywell M847D1012 Damper Actuator. The M847D is a two position, 24 Vac spring return damper actuator designed to operate directly driven zone dampers, used to control air flow in ducts. The synchronous motor actuator can be driven open (or closed) using any 24 volt rated two position switch - eg. a wall switch or a thermostat
subbase switch. It is designed to operate ARD, EARD and ZD zone dampers.
• Low voltage, spring-return damper actuator.
• Equipped with anti-rotation and drive shaft extensions for direct mounting to 7/16 inch diameter coupling style dampers.
• Adjustable range stops.
• Direct replacement for M847D1004
Furnace damper by Christine Davis (Brighton MI US)
The damper in the heating duct that provides zone heating for the downstairs was not opening properly although trying. Closer inspection indicated a problem with the motor. I ordered the new motor from Honeywell which promptly arrived in a couple of days and installed it. Everything is working as designed and just in time for cold weather. The part being an exact replacement for the old one made the job easy (20 minutes).