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11
RC
G
RH
Y
W2
W1
A
OB
C
FA
N
HEA
TER
SY
STEM
XFMR
TYPICAL 24V
, 4 WIRE, CONVENTIONAL HEA
TING AND COOLING
SYSTEMS WITH 1 ST
AGE HEA
T AND 1 ST
AGE COOL
A/C
UNIT
R
V
F
C*
6
W
H
4
Factor
y RH-RC Jumper Wire Installed
O
P
T
I
L
#4