Lux Products TX500U Installation And Operating Instructions Manual page 14

4, 5 WIRES
** Use "O" or "B"
Terminals, Never Both
O B
O
REVERSING
VALVE
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC
SINGLE-STAGE HEAT PUMP SYSTEM
WITH NO AUX OR EMERGENCY HEAT
Factory RH-RC Jumper Wire Installed
G Y RC
G Y R
F Y1 RC
6 V
SYSTEM 24V
FAN
TRANSFORMER
CUSTOMER INSTALLED Y-W1 Jumper Wire
RH W1 A
SYSTEM COMMON
HEAT PUMP
#7
W2 C
C
X
B*
O
P
T
I
O
N
A
L