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Carrier Stat wiring help

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carol_3
carol_3 Member Posts: 397
in Thermostats and Controls
guess I'd google carrier thermostats.

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  • steve_202
    steve_202 Member Posts: 1
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    Carrier Stat wiring help

    I need to replace my Carrier TSTATCCP2S01-B thermostat for our commercial electric heat/cool 5 ton system.
    The replacement stat is a Carrier 33CS450-01.
    The problem is in trying to match the wiring terminals.
    The old stat has a "S1" and "S2" terminal and the new unit has a "RS1" and "RS2" and a "RS+5". We are assuming these are the related terminals but not sure.
    Any help would be appreciated...perhaps you can direct us to an online wiring diagram.
    Thanks in advance...
  • John Mills_4
    John Mills_4 Member Posts: 43
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    I found

    nothing on your old stat. On the new one, the 3 terminals starting RS are for a remote sensor. Does your stat use a remote sensor? I did find a feature matrix that shows the old stat could use an outdoor sensor but still think Carrier uses a 3 wire outdoor sensor. I used to have one on my office's stat til the stat died.
  • [Deleted User]
    [Deleted User] Posts: 0
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    steve, if you haven't found it already

    http://www.docs.hvacpartners.com/idc/groups/public/documents/techlit/33cs-14si.pdf

    the s1 and 2 on the old stat are for remote sensors, and the rs1, 2 and +5 aren't used
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