9
W1
4
W
X
F
G
B*
W2
RH
V
R
W1
A
W2
O
B
C
G
Y
RC
RH
1-STAGE OR 2-STAGE, HEATING ONLY
(INCLUDING MILLIVOLT)
(2-WIRE HEAT USE “RH” & “W1”)
Factory RH-RC Jumper Wire Installed
#1
2, 3, 4, 5 WIRES
C
HEATER
STAGE
1
STAGE
2
FAN
SYSTEM 24V
TRANSFORMER
SYSTEM COMMON
FAN WIRE
MAY NOT BE
PRESENT IN
ALL SYSTEMS
NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC
O
P
T
I
O
N
A
L
