Trane BCHE - Thermostat; Electrical Shock Hazard!

64
BCX-SVX002A-EN
Thermostat
The thermostat is a wall-mounted, field-installed option. It
can provide three-speed control.
Figure 54. Terminal block
10 9 8 7 6 5 4 3 2 1
1. 24 Vac
2. N
3. Fan High
4. Fan Med
5. Fan Low
6. Cool/Cool or Heat
7. Heat/Aux Heat
8. Entering Water sensor
9. Common
10. N/A
Terminal Block
Figure 55. Thermostat wiring diagram
System 1
Heat Only
Remote Sensor
Pipe Sensor
Fan High
Heat
Fan Low
(Optional)
(Optional)
Purple
Yellow
Gray Gray
Orange/White
Red/White
Blue/White Blue/White Blue/White
Red
White
Black
24
VAC
Fan Medium
System 2
Cool Only
Remote Sensor
Pipe Sensor
Fan High
Cool
Fan Low
(Optional)
(Optional)
Purple
Blue
Yellow
Orange/White
Red/White
White
Black
24
VAC
Fan Medium
System 4
2-Pipe Seasonal Changeover
Remote Sensor
Pipe Sensor
Fan High
Heat/Cool
Fan Low
(Optional)
(Required)
Purple
Yellow
Gray
Orange/White
Red/White
Red
White
Black
24
VAC
Fan Medium
System 5
2-Pipe Manual Changeover
with Auxiliary
Remote Sensor
Pipe Sensor
Fan High
Auxiliary
Heat/Cool
Fan Low
(Optional)
(Required)
Purple
Yellow
Gray
Orange/White
Red/White
Blue
Red
White
Black
24
VAC
Fan Medium
System 7
4-Pipe Auto Changeover
Fan High
Cool
Heat
Fan Low
Purple
Yellow
Gray
Blue
Red
White
Black
24
VAC
Fan Medium
Blue/White
Blue/White
Red/White
C
W1
Y1
GH
GL
PS
SC
RS
R
GM
C
W1
Y1
GH
GL
PS
SC
RS
R
GM
C
W1
Y1
GH
GL
PS
SC
RS
R
GM
C
W1
Y1
GH
GL
PS
SC
RS
R
GM
C
W1
Y1
GH
GL
PS
SC
RS
R
GM
Remote Sensor
(Optional)
Wire Designator Description Color code
R
24 Vac Hot Black
C
24 Vac Common White
W1
Heat Red
Y1
Cool Blue
GH
Fan High Purple
GM
Fan Medium Yellow
GL
Fan Low Gray
PS
Pipe Sensor (optional) Orange/White
RS
Remote Sensor (optional) Red/White
SC
Sensor Common Blue/White
Wire Designator Description
WARNING
Electrical Shock Hazard!
Failure to follow instructions below could result in
death or serious injury.
Turn off power at the main service panel by removing
the fuse or switching the appropriate circuit breaker
to the OFF position before removing the existing
thermostat.
Important: Thermostat installation must conform to local
and national building and electrical codes and
ordinances.
Note: Mount the thermostat about five feet above the floor.
Do not mount the thermostat on an outside wall, in
direct sunlight, behind a door, or in an area affected
by a vent or duct.
1. Turn off power by removing the fuse or switching the
appropriate circuit breaker off.
2. To remove cover, remove screw and pull gently at the
seam at the top.
Installation - Controls