Lux Products TX500U Installation And Operating Instructions Manual page 12

5, 6 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)
2-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
STAGE STAGE
1
HEATER
#5
W2 C
W2 C
X
B*
O
P
T
I
O
N
A
L
2