Lux Products TX500U Installation And Operating Instructions Manual page 8

2, 3, 4, 5 WIRES
(INCLUDING MILLIVOLT)
Factory RH-RC Jumper Wire Installed
O B G
FAN WIRE
MAY NOT BE
G
PRESENT IN
ALL SYSTEMS
F
FAN
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC
1-STAGE OR 2-STAGE, HEATING ONLY
(2-WIRE HEAT USE "RH" & "W1")
Y RC RH
R
RH
V
SYSTEM COMMON
SYSTEM 24V
TRANSFORMER
W1 A W2
W W2
W1
4
STAGE STAGE
1 2
HEATER
#1
C
C
X
B*
O
P
T
I
O
N
A
L