Trane BCHE Installation, Operation And Maintenance Manual page 148

Layout and Control Box Diagrams
Figure 112. Control box for Tracer® UC400-B controller
1U1 (UC400-B)
green
1T1
Transformer
Figure 113. Control box for CSTI with 2-stage EH and DX coil
Note: Aux DX assembly can be mounted either
left hand or right hand depending on unit arrangment.
148
1TB1 DX
terminal block
1U3 Wireless
receiver with bracket
1U4 (ECM engine
control board) blue
Junction box/main
power connection
2-stage EH assembly
(1K2 and 1K3)
Velocitach
(1U4)
Transformer
(1T1)
Universal control
panel (UCP)
UCP lid
Low voltage
barrier
Junction box/
main power
connection
CSTI adapter (1U2)
Disconnect
switch
Aux DX Assembly
(1K1 and 1K4)
Disconnect switch
(1S1)
BCX-SVX002A-EN