Lux Products Smart Temp TX9100U Installation And Operating Instructions Manual page 9

3, 4 WIRES
Factory RH-RC Jumper Wire Installed
G Y1 RC
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC
HOT WATER HEATING ONLY
(WITH A 3-WIRE ZONE VALVE)
RH W1 A
R W A
RH W1
V 4
SYSTEM COMMON
SYSTEM 24V
TRANSFORMER
Y2 O B
OPEN CLOSE
3-WIRE ZONE VALVE
OPEN = Heat On
CLOSE = Heat Off
#2
W2 C
C
X
B*
O
P
T
I
O
N
A
L