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    algy's Avatar
    algy Posts: 1, Reputation: 1
    New Member
     
    #1

    Nov 29, 2007, 07:24 PM
    Themostate connection
    I have a manual thermostat with two wires and I would like to connect a programmable thermostat which has four connections. I do not have AC. So how do I hook up a four connection programmable thermostat to a two wire connection.
    labman's Avatar
    labman Posts: 10,580, Reputation: 551
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    #2

    Nov 29, 2007, 07:54 PM
    As long as the thermostat doesn't require a common to power itself, just connect one wire to R or RH, and the other to W. RC and Y are for A/C, and G if for fan on.

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