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R
G
W/W1
Y/Y2
Y1/W2
O/W2
R
G
CORPORATE
THERMOSTAT
MODEL 2S
FK4C INDOOR
TERMINAL
BOARD
SINGLE-SPEED
HEAT PUMP
W1
C
B
L
S1
S2
O
W2
Y1
C
Y/Y2
24 VAC HOT
FAN
HEAT STAGE 2
COOL/HEAT
STAGE 1
RVS COOLING
HEAT STAGE 3
24 VAC COM
RVS HEATING
TROUBLE
OUTDOOR
SENSOR
CONNECTION
R
Y
O
W2
C
A96532
R
C
Y
G
O
E
W2
L
THERMOSTAT
INDOOR
CONTROL
BOARD
SMART HEAT
WITHOUT OUTDOOR THERMOSTAT
OUTDOOR
SPLICE
DEFROST
BOARD
R
C
Y
G
O
W2D
W2T
W3
Y0
Y
W2
O
C
R
Y
W2
O
C
R
JW1
A96533
R
C
Y
G
O
E
W2
L
THERMOSTAT
INDOOR
CONTROL
BOARD
SMART HEAT
WITH 1 OUTDOOR THERMOSTAT
OUTDOOR
SPLICE
DEFROST
BOARD
R
C
Y
G
O
W2D
W2T
W3
Y0
Y
W2
O
C
R
Y
W2
O
C
R
CUT JW1
ODT
A96534
R
C
Y
G
O
E
W2
L
THERMOSTAT
INDOOR
CONTROL
BOARD
SMART HEAT
WITH SUPPLEMENTAL HEAT RELAY
OUTDOOR
SPLICE
DEFROST
BOARD
R
C
Y
G
O
W2D
W2T
W3
Y0
Y
W2
O
C
R
Y
W2
O
C
R
CUT
JW1
ODT
SHR
SHR
A96535
Fig. 12—Typical Circuit Connections (continued)
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