pin out ??

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pin out ??

Post  moritzw on Thu May 31, 2012 10:41 am

Hi there, is there any datasheet that gives precise technical information on the contacts of the Nest? I would like to know exactly what each contact does to see if this will work with my heating system...

Thanks, best, Moritz.

moritzw
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Re: pin out ??

Post  Thermostat on Fri Jun 01, 2012 12:48 am

RC = Cooling 24vac connection
RH = Heating 24vac connection
C = Transformer common connection
G = Fan connection
Y1 = Cooling connection
W1 = Heating connection
O/B = Heat pump reversing valve connection
Aux = Aux heating connection

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