Changing thermostat old has 9 wires


  #1  
Old 02-21-16, 07:48 AM
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Changing thermostat old has 9 wires

I have purchased a Honeywell smart wifi thermostat and can't figure out the wiring.
My old thermostat has
B
R
F
Y1
Y2
W
X2
O
G
It is on a Trane system. Can someone tell me how to wire it to the new thermostat which has option for
C
K
Rc
R
W-O/B
Y
G
W2-AUX/E
Y2
L
Any help would be appreciated. Thanks!!!
 
  #2  
Old 02-21-16, 10:09 AM
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B = C
R = Rc and R
Y1 = Y1
Y2 = Y2
F = L
W = Aux
X2 = E. ( I would Tape off the old X2 wire since Aux is also E on the new stat)
O = W/O/B. ( configure this to be O which is energized to cool)
G = G

Remember to remove power to the indoor unit before replacement.
Configure for multistage heat pump with Aux heat.
 
 

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