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    bgbuffalo Posts: 2, Reputation: 1
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    #1

    Nov 3, 2007, 08:22 AM
    Need a 24v com for new thermostat
    I have an oil fired forced air furnace with a Honeywell R8184 1296 ignition control. It only has two poles for the thermostat connection. I bought a 24v thermostat that requires a 24v com. The thermostat cable has a third wire available. But where do I get the common from without replacing the control? Can I just put in a 24v transformer and just use the common side?
    This is for a cabin that is not used a lot. The new thermostat will alow me to control the temp by telephone.
    bgbuffalo's Avatar
    bgbuffalo Posts: 2, Reputation: 1
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    #2

    Nov 3, 2007, 03:16 PM
    In case anyone is curious, here's how I solved the problem. I used a 24v transformer to power the thermostat connecter to r and c. There was a jumper for a millivolt system that isolates it from the 24v. Connected thermostat wires from furnace to w1 and mil.
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