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Honeywell m945

lchmb
lchmb Member Posts: 2,997
in THE MAIN WALL
I am looking for an electrical schematic for this valve. Any chance someone has this?

M945A1017

Comments

  • bob_46
    bob_46 Member Posts: 813
    Valve?

    M945A1017 is not a valve number it is the number of a series 90 modulating proportional

    spring return motor that may be used to operate a valve. It requires 24V 40VA on

    terminals T and T the other three terminals will be labeled R,W, and B. Remove the wire from the R terminal and jump terminal R to W the motor should turn counterclockwise.

    Jump R to B and motor should turn clockwise. The motor is controlled by any number of three wire controllers that have a 135 ohm potentiometer in them. The motor is usually mounted so the spring return will drive the valve to the full heat position in case of power

    outage or failure.

    There was an error rendering this rich post.

  • lchmb
    lchmb Member Posts: 2,997
    edited December 2011
    thanks

    Bob, wrong use of words on my part. Was a long day but you gave me the exact info I needed!!. The motor isn't functioning on a loss of power and I couldnt remember which terminal's to jump in order to get it to open and close...
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