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    roninsolis63's Avatar
    roninsolis63 Posts: 1, Reputation: 1
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    #1

    Jul 12, 2008, 11:53 PM
    How do I install a new Honeywell RTH230B from Honeywell T8195B
    Good evening.

    Our old thermostat was model T8195B which came with wires C,Y,W,R & G. has no rererence as to where they hook up. The new one RTH230B doesn't say where these wires go. I've removed the Rc/Rh jumper according the instruction manual. Nothing went on at all. What can I go

    Thank you
    Solis
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
     
    #2

    Jul 13, 2008, 03:43 AM
    Just in case you lost your directions I took the liberty to post them below


    http://customer.honeywell.com/techli...0s/69-1800.pdf

    All the wires are listed in the directions so I would read them to make sure you wired the thermostat correctly.

    The only wire no listed is the C but it is only for the old clock transformer that you do not need to use with the new stat.

    There is a toll free phone number in the instructions on the lower right side at the bottom. Call honeywell they will have your answer.

    NOTE: There are a few setting that you will have to do. They are also described in the instructions.

    HINT: RH and RC since you really only have a 4 wire system to start with you need to reconnect them.

    BTW here is the old thermostat wiring so you can compare wiring.

    http://customer.honeywell.com/techli...0s/69-0564.pdf

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