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Thread: trane univent

  1. #1

    trane univent

    I have several 40 year old trane univent that we took control of by using a bacnet thermostat. When the electricians wired in the relays they cut the wires. The units are two speed motors with five wires. They only used one wire for each speed and a neutral. Now the motors only run one speed if any at all. Does anyone know what the other two wires are for?

  2. #2
    Join Date
    Apr 2007
    Location
    Central PA
    Posts
    51
    Are you sure the motor is a two speed motor? Trane like to use single speed motors with a transformer. The transformer reduces the voltage down resulting in speed reduction. Do not know if they did that 40 years ago but they have been doing it for awhile. The motors they use have 5 wire. Google uv-pr004 it is a trane 2005 univent manual, but they still use the same motor wiring check out pg. 41

  3. #3
    Yes I am sure it is a two speed motor. Thank you.

  4. #4
    Join Date
    Apr 2007
    Location
    Central PA
    Posts
    51
    do you have a model number? how do you know it is a two speed motor? if it says anthing on the motor then it should show what wires are what.

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