EWC-ST-3C and Nest

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pcoppole
Posts: 1
Joined: Sun Mar 06, 2016 8:35 am

EWC-ST-3C and Nest

Post by pcoppole »

I just moved to my new home and i have a EWC-ST-3C control panel and I would like to change the current zone 1 thermostat to a NEST 3D
But i'm having a problem with the connectivity. Nest technical support said to connect the wire the following way:

Current Ultra zone thermostat Nest
G-----------------------> G
O-----------------------> O/B
Y------------------------> Y1
W------------------------> W2AUX
B------------------------> C
R------------------------> RH

Any suggestions?

Thank you / pat
Paul Z.
Posts: 216
Joined: Thu Dec 08, 2011 3:05 pm

Re: EWC-ST-3C and Nest

Post by Paul Z. »

Sorry for delay. Give office a call 1-800-446-3110 X490
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