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  1. #1
    Join Date
    May 2009
    Location
    South of Heaven
    Posts
    1,139

    Tracer SC question

    I have 4 reliatel RTU units ( packaged gas heat , cooling , etc ) that have Tracer SC controllers ( comm4? ). The control system is not online but they are asking me to start the units for temp. heat. Can I just connect a zone sensor and or do I need to disconnect the comm board from the reliatel ? Replies appreciated.

  2. #2
    Join Date
    Mar 2011
    Location
    North Carolina Piedmont Area
    Posts
    449
    If Tracer Summit is not in control as a first priority than the unit will look for another means for secondary control. Why don't you just simply install a conventional thermostat. It will work just fine that way.

  3. #3
    Join Date
    May 2009
    Location
    South of Heaven
    Posts
    1,139
    Cool , I wasn't sure if the unit would just sit there if there was no communication. Thanks very much.

  4. #4
    Hi!, I remember reliatel RTU is using COMM4. But Tracer SC don't have COMM4. It using COMM5, BACnet MSTP/IP only.

  5. #5
    Join Date
    Jun 2004
    Location
    SC
    Posts
    139
    Quote Originally Posted by thientran View Post
    Hi!, I remember reliatel RTU is using COMM4. But Tracer SC don't have COMM4. It using COMM5, BACnet MSTP/IP only.
    You are exactly right, the SC does not do comm4, a BCU is need fot a gateway. It's pretty bad when their new "cutting edge" system doesn't support their own protocol.

  6. #6
    Hi!,
    We no need BCU as gateway for SC. The BCI-R is gateway if you want intergrated beetwen Reliatel RTU and Tracer SC.

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