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  1. #1
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    Andover Controls TCX866

    Does anyone know how to wire up the outputs for a TCX866, when I command these on I'm expecting to see a 24vac output but it's always zero. Any input on this will be appreciated.

  2. #2
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    The Andover Controls TCX 866 is a VAV Controller with a built-in damper actuator used with the Infinity line.

    The TCX 866 has 3 SPDT Form A triac outputs and two analog outputs (0-10 vdc).

    What are trying to wire?
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  3. #3
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    I'm trying to activate the relay output. Are you suppose to read a 24vac output when checking it with your meter? I have a 24vac relay board, I just need to make sure the relay turns on and off. I have 2 of these and I'm getting the same results. I was thinking maybe they were defective but I'm not to sure about that now.

  4. #4
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    I can program all the inputs/outputs/damper and even the airflow sensor. They all function properly except for the digital outputs and can't turn on the relays. I can see the change in resistance when they are commanded on (11.8k) and off (open) but no voltage is present. By the way thanks for the diagram.

  5. #5
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    Not familiar with the product, but you might have to wire in the 24vac to the outputs com/ref (if they are triac take special care, some triacs can only switch the "common").

    kontrol out
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  6. #6
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    Quote Originally Posted by kontrolphreak View Post
    Not familiar with the product, but you might have to wire in the 24vac to the outputs com/ref (if they are triac take special care, some triacs can only switch the "common").

    kontrol out
    kontrolphreak is correct on this.

  7. #7
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    Quote Originally Posted by kontrolphreak View Post
    Not familiar with the product, but you might have to wire in the 24vac to the outputs com/ref (if they are triac take special care, some triacs can only switch the "common").

    kontrol out
    Bingo

  8. #8
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    Ok thanks for your help, I think I found a diagram on these and they are triac outputs.

  9. #9
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    If you need anything else, just ask.

  10. #10
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    i have the same question. i was trying to wire a andover tcx 865-v and i was expecting 24volts on the output but it has no voltage. i was reaing in the output that it requires 4volts square weighed, if anybody know how i can bypass and get the 24volts to engerize the heater contacter. this one has a thermostat and a tempeture sensor, open to any suggestions

  11. #11
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    Make sure that the terminal "Triac Ref" is wired to the hot side of the transformer (X1). When the output is switched on it should have 24VAC on it.

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