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Fig. 34 — Typical Wiring Schematic (50XCW12-24, 208/230-3-60 Units Shown)
IFM
COMP1
121/BLK
123/BLU
122/YEL
118/BLK
120/BLU
119/YEL
C1
125/BLK
126/BLK
CH1
TB1
CLO1-Loop
103/BLK
104/YEL
105/BLU
106/BLK
107/YEL
108/BLU
109/GRN
2
1
3
T2
L2
T1
L1
T3
L3
150/BLK
151/YEL
501/RED
500/BRN
IFC/IFR
DISC1
L2
L3
L1
GND
100/BLK
101/BLK
102/BLK
T3
L3
T2
L2
T1
L1
GND
124/GRN
2
1
3
COMP2
130/BLK
132/BLU
131/YEL
127/BLK
129/BLU
128/YEL
C2
134/BLK
135/BLK
CH2
CLO2-Loop
T2
L2
T1
L1
T3
L3
133/GRN
2
1
3
152/BLK
153/YEL
561/RED
560/BRN
Continued
on Low
Voltage
Diagram
TB3
208/230V
3
60 Hz
TRAN1
24
V
Cl
as
s
2
208V
240V
COM
TRAN2
24
V
Cl
as
s
2
208V
240V
COM
LEGEND
C
—
Compressor Contactor
CH
—
Crankcase Heater
CLO
—
Compressor Lockout
COMP —
Compressor
CR
—
Control Relay
DISC
—
Disconnect
FRZ
—
Freeze Protection
GND
—
Ground
HPS
—
High-Pressure Switch
IFC
—
Indoor-Fan Contactor
IFM
—
Indoor-Fan Motor
IFR
—
Indoor-Fan Relay
LPS
—
Low-Pressure Switch
TB
—
Terminal Block
TRAN —
Transformer
Terminal Block Connection
Marked Terminal
Unmarked Terminal
Splice
Factory Wiring
Field Power Wiring
NOTES:
1. Fan motors are inherently thermally protected.
2. Three-phase motors are protected under primary
single phase conditions.
3. Use conductors suitable for at least 194°F (90°C)
when replacing factory wiring.
4. Use copper conductors only.
5. Wiring for field power supply must be rated at 165°F
(75°C) minimum.
6. Phase rotation sequence is L2-L1-L3.
7. TRAN1 and TRAN2 power separate 24-V circuits.
These circuits should not be interconnected and
separation must be maintained.
8. Transformers are factory wired for 240 v operation.
Move the black wire to the 208 v tap for 208 v
operation.
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