→
Fig. 8—Variable-Speed Furnace
with Single-Speed Heat Pump
A98445
O/W2
Y1/W2
W/W1
G
R
R
G
DUAL FUEL
THERMOSTAT
VARIABLE-SPEED
CONDENSING
FURNACE
SINGLE-SPEED
HEAT PUMP
W/W1
C
Y
W2
O
C
B
L
S1
S2
R
Y/Y2
C
HUM
W2
HEAT STAGE 2
(FURNACE LO)
HEAT/COOL
STAGE 1
(COMPRESSOR)
HEAT STAGE 3
(FURNACE HI)
RVS COOLING
FAN
24 VAC HOT
24 VAC COM
N/A
RVS SENSING
OUTDOOR
SENSOR
CONNECTION
Y/Y2
OUTDOOR
SENSOR
See notes 1, 2, 3, 4, 7, and 9
SUGGESTED DIP
SWITCH SETTINGS
ON
A
B
C
D
OFF OFF OFF OFF
→
Fig. 6—Variable-Speed 2-Stage Non-Condensing
Furnace
with Single-Speed Heat Pump
A98447
O/W2
W/W1
G
R
R
G
DUAL FUEL
THERMOSTAT
AFS
BOARD
SINGLE-SPEED
HEAT PUMP
W/W1
C
Y
W2
O
C
B
L
S1
S2
R
Y/Y2
C
HUM
HEAT STAGE 2
(FURNACE LO)
HEAT/COOL
STAGE 1
(COMPRESSOR)
RVS COOLING
FAN
24 VAC HOT
24 VAC COM
N/A
RVS SENSING
OUTDOOR
SENSOR
CONNECTION
Y/Y2
Y1/W2
W2
HEAT STAGE 3
(FURNACE HI)
OUTDOOR
SENSOR
See notes 1, 2, 3, 4, 7, and 9
SUGGESTED DIP
SWITCH SETTINGS
ON
A
B
C
D
OFF OFF OFF OFF
FURNACE
BOARD
O
Y1
VARIABLE-SPEED 80% NON-CONDENSING FURNACE
→
Fig. 9—Variable-Speed Furnace
with 2-Speed Heat Pump
A98446
O/W2
Y1/W2
W/W1
G
R
R
G
DUAL FUEL
THERMOSTAT
VARIABLE-SPEED
CONDENSING
FURNACE
TWO-SPEED
HEAT PUMP
W/W1
C
Y2
W2
O
Y1
W3
C
B
L
S1
S2
R
C
HUM
W2
HEAT STAGE 3
(FURNACE)
HEAT/COOL
STAGE 2
(COMPRESSOR HI)
HEAT/COOL
STAGE 1
(COMPRESSOR LO)
RVS COOLING
FAN
24 VAC HOT
24 VAC COM
N/A
RVS SENSING
OUTDOOR
SENSOR
CONNECTION
Y/Y2
Y/Y2
OUTDOOR
SENSOR
See notes 1, 2, 3, 4, 5, 6, 8, and 10
SUGGESTED DIP
SWITCH SETTINGS
ON
A
B
C
D
OFF OFF OFF ON
→
Fig. 7—Variable-Speed 2-Stage Non-Condensing
Furnace
with 2-Speed Heat Pump
A98448
O/W2
W/W1
G
R
R
G
W3
DUAL FUEL
THERMOSTAT
AFS
BOARD
TWO-SPEED
HEAT PUMP
W/W1
C
Y2
W2
O
Y1
C
B
L
S1
S2
R
Y/Y2
C
HUM
RVS COOLING
FAN
24 VAC HOT
24 VAC COM
N/A
RVS SENSING
OUTDOOR
SENSOR
CONNECTION
Y/Y2
HEAT/COOL
STAGE 1
(COMPRESSOR LO)
HEAT/COOL
STAGE 2
(COMPRESSOR HI)
Y1/Y2
W2
HEAT STAGE 3
(FURNACE)
OUTDOOR
SENSOR
See notes 1, 2, 3, 4, 5, 6, 8, and 10
SUGGESTED DIP
SWITCH SETTINGS
ON
A
B
C
D
OFF OFF OFF ON
FURNACE
BOARD
O
Y1
VARIABLE-SPEED 80% NON-CONDENSING FURNACE
9