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-   -   New Thermostat for Heat and A/C (http://www.diychatroom.com/f17/new-thermostat-heat-c-110509/)

will1874 07-12-2011 11:41 AM

New Thermostat for Heat and A/C
 
We have Central Air and Oil-fired heat (baseboard heaters). Upstairs, there are two thermostats, right next to each other on the wall. I want to consolidate the two old thermostats into one programmable thermostat capable of controlling both heat and A/C.

The old thermostat that controls heat is a Honeywell T822D. The wires are not labeled but one is red and one is white. I'm assuming one would be R and one W

The old thermostat controlling the AC is a Honeywell T87F. The wires on that one are labeled: R, G, and Y.

Can it be done? Should I connect the R from the AC side to the R terminal and the red wire from the heat thermostat to the RH terminal?

beenthere 07-12-2011 05:03 PM

Yes, A/C to R, and heat to RH.


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