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C
W2
L
ODT
G
Y
THERMOSTAT
SUBBASE
SYSTEM WITH ONE OUTDOOR THERMOSTAT
INDOOR
SPLICE
CONNECTION
OUTDOOR
SPLICE
CONNECTION
DEFROST
BOARD
W3
C
W2
C
W2
E
G
RR
O
Y
E
O
R
USED WITH FB4, FB5, FC4, FA4, FH4 FAN COILS
(WITH 1 OUTDOOR TSTAT)
A96530
C
W2
L
G
Y
THERMOSTAT
SUBBASE
SYSTEM WITH TWO OUTDOOR THERMOSTATS
INDOOR
SPLICE
CONNECTION
OUTDOOR
SPLICE
CONNECTION
DEFROST
BOARD
W3
C
W2W2
C
G
RR
O
Y
E
O
R
USED WITH FB4, FB5, FC4, FA4, FH4 FAN COILS
(WITH 2 OUTDOOR TSTATS)
E
EHR
ODT
ODT
EHR
EHR
A96531
R
G
W/W1
Y/Y2
O/W2
Y1/W2
C
B
24VAC HOT
FAN
HEAT STAGE 2
COOL/HEAT
STAGE 1
RVS COOLING
HEAT STAGE 3
24VAC COMM.
RVS HEATING
LTROUBLE
S1
OUTDOOR
SENSOR
CONNECTION
S2
CORPORATE
THERMOSTAT
MODEL 2S
INDOOR
TERMINAL
BOARD
FK4C
USED WITH FK4C FAN COIL
(CUT J2 JUMPER)
SINGLE-SPEED
HEAT PUMP
R
G
W1
Y/Y2
O
W2
Y1
C
OW
C
W2
O
Y
R
J2
JUMPER
A96536
R
G
W/W1
Y/Y2
O/W2
Y1/W2
C
B
24VAC HOT
FAN
HEAT STAGE 2
COOL/HEAT
STAGE 1
RVS COOLING
N/A
24VAC COMM.
RVS HEATING
LTROUBLE
S1
OUTDOOR
SENSOR
CONNECTION
S2
CORPORATE
THERMOSTAT
MODEL HP
INDOOR
CONTROL
BOARD
WITHOUT OUTDOOR THERMOSTAT
DEFROST
BOARD
OUTDOOR
SPLICE
R
C
Y
G
O
W2D
W2T
W3
Y0
Y
W2
O
C
R
JW1
Y
W2
O
C
R
A96537
Fig. 12—Typical Circuit Connections (continued)
11