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Honeywell M644A

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Jack Rise
Jack Rise Member Posts: 3
in THE MAIN WALL
Hope this helps:

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  • Eric_16
    Eric_16 Member Posts: 2
    Honeywell M644A

    I'm looking for a schematic for a Honeywell M644A Modutrol head. Any ideas? Thanks
  • Jack Rise
    Jack Rise Member Posts: 3


    Hope this helps.
  • BillW@honeywell
    BillW@honeywell Member Posts: 1,099
    M644

    These were reversing, two position motors (drive open, drive closed). Most were 24 volt, but there was one, the
    M644B, that was 120 volt. If you can get the whole part number, I can get you the stroke & timing. Try the following website. http://hbctechlit.honeywell.com, and when you get on the site, type in M644 and you should find a spec sheet with wiring diagrams. These motors are obsolete, and have various replacements.
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