0

My old HVAC blower motor has the following wires and I would like to know how to wire them to a typical 110v plug for use as a garage exhaust fan.
yellow (N) black (L) yellow/green (ground) black (M1) blue (M2) orange (M3) white (M4) gray (M5) brown (com) There wasn't a capacitor on the furnace blower motor assy, but there was a 24vac transformer. Any help with this project is appreciated.

enter image description here

  • 1
    Are you really sure of this project? Do you really need a 3/4HP motor for an exhaust blower? Have you found a safe way to cage the thing you are proposing to build? – Michael Karas May 21 '16 at 22:00
  • 1
    How was it wired up in the application you removed it from? – Ecnerwal May 21 '16 at 23:45
  • Either that thing is more than a motor, or that label is off of something that's more than a motor. – Harper May 22 '16 at 1:34
  • It's a blower motor/fan assembly out of a residential York furnace that is only about two years old. – Robert May 22 '16 at 2:05
  • It was originally wired to a circuit board controlling the furnace. – Robert May 22 '16 at 2:19
1

As it sounds like it's an electronically commutated motor (ECM). My advice is to grab the control board, blower, and transformer out of the furnace. Then connect everything up as it was in the furnace. You should then be able to use the R and G thermostat terminals, to turn the fan on and off.

You will have to bypass any limit circuits on the board, but it shouldn't matter since you're only using the blower.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.