thermostat wiring help needed ASAP!!

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  #1  
Old 06-04-16, 09:16 PM
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Exclamation thermostat wiring help needed ASAP!!

Hey everyone,

I just bought a new home and am in process of replacing the old thermostat to a Honeywell RTH7600. the old wiring was labeled and colored as the following:

G - green wire
Y - yellow wire
E - brown wire
W2 - black wire
R - red wire
O - orange wire
C - blue wire

this is the first time really messing with home electric of any sort. Where I was getting confused was the inside lettering vs outside lettering on the new thermostat. Across from O/B, its a W. Across from E its Y2. if someone could let me know where to plug the corresponding wires in relation to the OUTSIDE lettering it would be greatly appreciated.

below is the original thermostat wiring, the diagram for the new rth7600 and a google image of the same model I have(do not look at wiring colors on last image)
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  #2  
Old 06-05-16, 05:07 AM
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I would connect it just like the last image. Substitute your brown for their gray since that is the color of your E.

Tape off black.

You must also configure for heat pump operation.

Set 170 to 7 and 190 to 0.
 
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Old 06-05-16, 07:12 AM
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I forgot to add the White W1 wire to that list!
 
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Old 06-05-16, 08:04 AM
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I would wire it up like this...

Old - wire - new

G - green wire - G
Y - yellow wire - Y
E - brown wire - E
R - red wire - Rc & R
O - orange wire - O/B
C - blue wire - C
W1 - white - Aux

W2 - black wire - I would tape off this wire here but I might connect it to Aux along with the white wire if I were someplace very cold like your state.
 
 

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