NEST THERMOSTAT COMPATIBILITY

[davelx]

Hi,

I'm little confused going through compatibility checker.  This is our current setup

We have a Honeywell Home HZ221 in the attic by the furnace.  Two PRO1 T725 thermostats (one upstairs, one downstairs) Wiring on both is as follows

C - blue wire

O - orange wire

W/E - white wire with red jumper to W2 terminal

W2 - brown wire

R - red wire

G - green wire

Y - yellow terminal

Trying to see if the nest learning thermostats are compatible .  Hope someone can help

[Jenelyn_O]

Hi davelx,

Thanks for reaching in the Google Nest Community forum. Your system is compatible with the Nest Learning Thermostat. To confirm in what country are you located? 

Check out the wiring guide below:

• Y1 - Yellow (Cooling)
• W1 - Brown (Heating)
• W2 Aux - White (Auxiliary) 
• G - Green (Fan)
• C - Blue (Common)
• OB - Orange (Reversing Valve)
• RC/RH - Red (Power)

Nest Thermostats don't use jumper wires, please disconnect your red jumper wire from any terminal on the Nest Thermostat. 

For your reference, you can visit the Nest thermostat compatibility.

Best,

Jenelyn