Trane Tracer UC400 Installation, Operation And Maintenance Manual page 22

T T y y p p i i c c a a l l A A p p p p l l i i c c a a t t i i o o n n s s a a n n d d T T e e r r m m i i n n a a t t i i o o n n s s
Figure 5. DX Heat Pump, Electric Heat, and SCR Electric Heat
1
22
Ground
24 Vac
IM C
24 24 24
VAC VAC VAC
XFRM
AO1 AO2
UI 1
BI 4 BI 5
SCR
Analog Cooling
(Modulating)
or Changeover Valve
Elec Heat
Analog/Heat/Cool Terminal Connections
IM C
24
VAC
Two-Tier XFRM
Terminal
AO1
BI 4
Connections
1
ADDRESS
Single-Tier
BO1
Terminal
NO NC C NO
Connections
BI 1 BI 2 BI 3
UI 2 AI 1 AI 2 AI 3
24 24
VAC VAC
BI 1 BI 2 BI 3
AO2
UI 1 UI 2 AI 1 AI 2 AI 3
BI 5
BO1 BO2 BO3 BO4 BO5 BO6 BO7 BO8 BO9
CONNECT AC POWER TO THE TRAIC SUPPLY TO POWER THE TRIACS
RELAYS TRIAC SUPPLY
BO2 BO3
NC C NO NC C A B
BO4
Compressor/Valve Terminal Connections
CONNECT AC POWER TO THE TRAIC SUPPLY TO POWER THE TRIACS
TRIAC SUPPLY
A B
Compressor 1
Electric Heat Terminal Connections
CONNECT AC POWER TO THE TRAIC SUPPLY TO POWER THE TRIACS
TRIAC SUPPLY
A B
+ 24
VDC
LINK IMC
AI 4 AI 5
P 1 P 2
IM C
+ 24
VDC
LINK
IMC
AI 4 AI 5
P 1 P 2
LINK IMC
TX
RX
SERVI C E
SERVICE TOOL
TRIACS
B A
BO5 BO6 BO7 BO8 BO9
TRIACS
BO4 BO5 BO6 BO7 BO8
Reversing Valve
Compressor 2
TRIACS
BO4 BO5 BO6 BO7 BO8
Heat Stage 1
Heating Stage 2 (Opt)
IM C
B A
BO9
B A
BO9
BAS-SVX48H-EN