Y – Y
W (O/B) – O
G – G
W2 – W
RH / RC – R (this is jumped)
At this point I decided to use an "accessory" switch for the emergency heat.
As the new thermostat states, all non-powered accessories require a jump from "R" so...
R jumped to ACC1
ACC1r – X2
R also jumped to the other 24v main input block.
B connected to other 24v main input block.
I currently have cool running right now. Everything seems fine, but haven't tried heat.
My concerned is over the X2 and W wire.
This new Smart Thermostat does not have an "E" terminal.
The W1 is occupied by the changeover (orange wire).
The W2 is occupied (how I have it wired) by the W wire.
So what to do with the X2 or Emergency Heat wire?
I have read to leave it unhooked?
New member - thanks for reading!
Last edited by cory_booth; 08-30-2012 at 09:49 AM.