Lux Products TX500U Installation And Operating Instructions Manual page 11

4, 5 WIRES
Factory RH-RC Jumper Wire Installed
O B
AIR
FAN
CONDITIONER
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC
CONVENTIONAL (NON HEAT PUMP)
1-STAGE HEATING AND 1-STAGE COOLING
G Y RC
G Y
F Y1
6
SYSTEM COMMON
SYSTEM 24V
TRANSFORMER
RH W1 A
R W
RH W1
RC 4
V
HEATER
#4
W2 C
C
X
B*
O
P
T
I
O
N
A
L