RTH8500D for Trane XE1000 - http://www.hvacmechanic.com/ Forums

Original message

tlh

130.76.32.144

"RTH8500D for Trane XE1000" , posted Sat 2 Feb 14:16

I have a trane heat pump / furnace system with the following terminals on the thermostat.
T,G,Y,X2,B,W,O,R

I plan to replace the T-stat with the RTH8500D. Do you agree this is a good match? Anything to look out for?

tlh

Replies:

Houston204

98.196.66.53

"Re(1):RTH8500D for Trane XE1000" , posted Sat 2 Feb 19:48

Be sure to remove power to your air handler before replacing your thermostat, to avoid damaging your transformer.
My diagram shows the most common Terminal = color combination. Write down your wire combination before removing any wires.

Trane = Honeywell
G = G
Y = Y
X2 = E
B = C
W = Aux
O = O/B
R = Rc & R

Tape off your tan wire. Todays thermostats do not require a thermistor for proper operation. (And do not support them)

You must also onfigure your themostat to match your system.
option 170 = 7
option 190 = 0

"Tip of the Day" Remember to remove power first.