12
RC
G
RH
Y
W2
W1
A
OB
C
FA
N
SY
STEM
XFMR
TYPICAL 24V
, 5 WIRE, CONVENTIONAL HEA
TING AND COOLING
SYSTEMS WITH 2 ST
AGE HEA
T AND 1 ST
AGE COOL
HEA
T
SEC
O
ND
ST
A
G
E
HEA
T
FIRST
ST
A
G
E
A/C
UNIT
W2
RH
R
V
G
F
Y
C*
6
W1
W
H
4
C
Factor
y RH-RC Jumper Wire Installed
O
P
T
I
O
N
A
L
#5
