Original message
| purseljb
 |  "Honeywell T8611R wiring"
, posted Fri 12 Dec 13:31  
I just purchased a Honeywell T8611R to replace my Trane Weathertron BAYSTAT240A. The current wiring diagram is; R-red, T-brown (this connection is attached to the screw holder and goes through the board and goes to the mercury switch),O-orange, G-green, Y-yellow, X2-black, B-blue, W-white (this connection is attached to the screw holder and goes through the board and goes to the mercury switch and is also jumpered to what looks like a "J" with a 1 in it), F-empty. The Honeywell has; R, C, O, B, G, W2, E, W1, Y1 (currently jumpered to W1), L, and P. I'd hate to ruin the new thermostat. I'd really appreciate any assistance that can be offered. Thanks in advance,
Jack
Jack
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Replies:
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| xenos
Webmaster 
|  "Re(1):Honeywell T8611R wiring"
, posted Fri 12 Dec 17:24
The connections are as follows
Honeywell.
R- Power
C- Common
B- Reversing valve heating
O- Reversion valve cooling
G- Fan
W2- Aux heat
E- emergency Heat
W1 and Y1 – compressor
Trane bay stat 240A
R-Power
B-Common
O- Reversion valve cooling
G-Fan
X2-Wmergency heat
W- Aux heat
Y- Compressor
All others are not required
For more information refer here.
http://www.hvacmechanic.com/tstatwiring.htm
Xenos.
The best way to escape a problem is to solve it.
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