Lux Products LuxPro P521U Installation And Operating Instructions Manual page 16

5, 6 WIRES
** Use "O" or "B"
Terminals, Never Both
O B
O
REVERSING
FAN
VALVE
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC
2-HEAT / 1-COOL, HEAT PUMP SYSTEM
WITH AUX AND EMERGENCY HEAT
Factory RH-RC Jumper Wire Installed
G Y RC RH
G Y R
F Y1 RC
6 V
SYSTEM COMMON
SYSTEM 24V
TRANSFORMER
CUSTOMER INSTALLED Y-W1 Jumper Wire
W1 A W2
W2
W3
W
AUX / EMERG.
HEAT PUMP
HEAT
#8
C
C
X
B*
O
P
T
I
O
N
A
L