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Empire_2 Member Posts: 2,343
Look at the literature and it should tell you. HW zone valves are nothing special...

Mike T.


  • michael_25
    michael_25 Member Posts: 1

    will a round ct87k honeywell thermostat -[all electronic with out mercury] work with honeywell zone vales using just 2 wires to thermostat.thank you mike,,,
  • t.wheat
    t.wheat Member Posts: 11

    www.customer.honeywell.com should let you access all lit avail, used to work for honeywell, and thats where we told people to look, hope it helps
  • Ken_40
    Ken_40 Member Posts: 1,320

    IF! you have a reeeeeeeeal old Honeywell ZV that is three wire - they are NOT compatible. At east not without a few "fixes" we could help with...

    The odds of you having a three-wire (powered open and separately: powered closed) are about 1:100.
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