Instruction manual
Fig. 21—Variable-Speed 2-Stage Non-Condensing Furnace
With 1-Speed Heat Pump (Dual Fuel)
A97436
O/W2
W/W1
Y1/ W2
G
R
THERMIDISTAT
FURNACE
BOARD
AFS
BOARD
1-SPEED
HEAT PUMP
VARIABLE SPEED 80% NON-CONDENSING FURNACE
W/W1
G
Y/Y2
C
Y
W2
O
C
DHUM
HUM
B
S1
S2
R
W2
O
Y1
R
COM
HUM
PL9-10
DEHUM
HEAT STAGE 2
HEAT/COOL
STAGE 1
HEAT STAGE 3
RVS COOLING
FAN
24 VAC HOT
24 VAC COM
DEHUMIDIFY
HUMIDIFY
N/A
OUTDOOR
SENSOR
CONNECTIONS
Y/Y2
HUMIDIFIER
(24 VAC)
OUTDOOR
SENSOR
See notes 3, 7, 9, 10, 12, 14, 15, and 17
Fig. 19—Variable-Speed 2-Stage Non-Condensing Furnace
With 1-Speed Air Conditioner
A97434
O/W2
W/W1
Y1/ W2
G
R
THERMIDISTAT
FURNACE
BOARD
AFS
BOARD
1-SPEED
AIR CONDITIONER
VARIABLE SPEED 80% NON-CONDENSING FURNACE
W/W1
G
Y/Y2
C
Y
C
DHUM
HUM
B
S1
S2
W2
O
Y1
R
COM
HUM
PL9-10
DEHUM
HEAT STAGE 1
COOL STAGE 1
HEAT STAGE 2
FAN
24 VAC HOT
24 VAC COM
N/A
DEHUMIDIFY
HUMIDIFY
N/A
OUTDOOR
SENSOR
CONNECTIONS
Y/Y2
HUMIDIFIER
(24 VAC)
OUTDOOR
SENSOR
See notes 6, 10, 12, 13, and 15
Fig. 22—Variable-Speed 2-Stage Non-Condensing Furnace
With 2-Speed Heat Pump (Dual Fuel)
A97437
O/W2
W/W1
Y1/ W2
G
R
THERMIDISTAT
FURNACE
BOARD
AFS
BOARD
2-SPEED
HEAT PUMP
VARIABLE SPEED 80% NON-CONDENSING FURNACE
W/W1
G
Y/Y2
C
Y2
W3
W2
O
C
DHUM
HUM
B
S1
S2
R
W2
O
Y1
R
COM
HUM
PL9-10
DEHUM
HEAT STAGE 3
HEAT/COOL
STAGE 1
HEAT/COOL
STAGE 2
RVS COOLING
FAN
24 VAC HOT
24 VAC COM
DEHUMIDIFY
HUMIDIFY
N/A
OUTDOOR
SENSOR
CONNECTIONS
Y/Y2
HUMIDIFIER
(24 VAC)
OUTDOOR
SENSOR
See notes 3, 4, 5, 8, 9, 10, 12, 14, 16, and 17
Y1
Fig. 20—Variable-Speed 2-Stage Non-Condensing Furnace
With 2-Speed Air Conditioner
A97435
O/W2
W/W1
Y1/ W2
G
R
THERMIDISTAT
FURNACE
BOARD
AFS
BOARD
2-SPEED
AIR CONDITIONER
VARIABLE SPEED 80% NON-CONDENSING FURNACE
W/W1
G
Y/Y2
C
Y2
Y1
C
DHUM
HUM
B
S1
S2
R
W2
O
Y1
R
COM
HUM
PL9-10
DEHUM
HEAT STAGE 1
COOL STAGE 2
COOL STAGE 1
HEAT STAGE 2
FAN
24 VAC HOT
24 VAC COM
DEHUMIDIFY
HUMIDIFY
N/A
OUTDOOR
SENSOR
CONNECTIONS
Y/Y2
HUMIDIFIER
(24 VAC)
OUTDOOR
SENSOR
See notes 6, 9, 10, 12, 13, and 16
—15—