Terminal Identification - Trane Thermostats Installation And Operation Manual

2. Align the pins on the circuit board with the holes on the bottom of the terminal blocks and gently
Figure 5. Attaching the wired terminal blocks to the pins on the circuit board
3. Push the excess wire through the hole in the wall cavity or into the junction box.
4. Use nonflammable insulation to prevent air movement between the wall cavity and the

Terminal Identification

The table below defines the terminals for each of the thermostat types.
Terminal
Label
W2 (W1)
W2 (Aux/E)
(1) Text (in parentheses) applies to heat pump systems.
BAS-SVX36C-EN
push the wired terminal blocks into place on the circuit board. See
Programmable thermostat
Important: Do not coil excess wire between the thermostat and the back plate.
thermostat.
Terminal Description
C Common
G Fan Relay
Y Stage 1 compressor control
W (O/B) Heat relay (Changeover valve)
Rc 24Vac cooling
R 24Vac heating
Second stage heat (Auxiliary heat or emergency heat relay.)
or
Y2 Stage 2 compressor control
A Economizer
S1 External sensor
S2 External sensor
(L) (Emergency heat indicator)
3-Heat/2-Cool thermostat
(1)
These terminals are shipped with a jumper connected
between them. Remove the jumper if the 24Vac power
supplies are separate.
(1)
Installation
Figure 5.
s
1-Heat/1-Cool thermostat
Where present:
 
 
 
 
 
 
(1)
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









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