→
Fig. 29—Variable-Speed 2-Stage Condensing
Furnace — With DE Connection —
With 1-Speed Heat Pump (Dual Fuel)
A98284
O/W2
Y1/W2
W/W1
G
R
W2
THERMIDISTAT
VARIABLE-SPEED
CONDENSING
FURNACE
1-SPEED
HEAT PUMP
W/W1
G
C
Y
W2
R
O
C
DHUM
HUM
B
S1
S2
Y/Y2
R
DEHUM
DE
NOTE 18
COM
HUM
RVS COOLING
HEAT STAGE 2
HEAT STAGE 3
(FURNACE HI)
(FURNACE LO)
(COMPRESSOR)
HEAT/COOL STAGE 1
FAN
24 VAC HOT
24 VAC COMM
DEHUMIDIFY
HUMIDIFY
N/A
OUTDOOR
SENSOR
CONNECTION
Y/Y2
HUMIDIFIER
(24 VAC)
OUTDOOR
SENSOR
See notes 3, 7, 9, 10, 11, 14, 15, 17, and 18
→
Fig. 27—Variable-Speed 2-Stage Condensing
Furnace — With DE Connection —
With 1-Speed Air Conditioner
A98282
O/W2
Y1/W2
W/W1
G
R
W2
THERMIDISTAT
VARIABLE-SPEED
CONDENSING
FURNACE
1-SPEED
AIR CONDITIONER
W/W1
G
C
Y
C
DHUM
HUM
B
S1
S2
Y/Y2
R
DEHUM
DE
NOTE 18
COM
HUM
HEAT STAGE 2
N/A
HEAT STAGE 1
COOL STAGE 1
FAN
24 VAC HOT
24 VAC COMM
DEHUMIDIFY
HUMIDIFY
N/A
OUTDOOR
SENSOR
CONNECTION
Y/Y2
HUMIDIFIER
(24 VAC)
OUTDOOR
SENSOR
See notes 6, 10, 11, 13, 15, and 18
→
Fig. 30—Variable-Speed 2-Stage Condensing
Furnace — With DE Connection —
With 2-Speed Heat Pump
A98285
O/W2
Y1/W2
W/W1
G
R
W2
THERMIDISTAT
VARIABLE-SPEED
CONDENSING
FURNACE
2-SPEED
HEAT PUMP
W/W1
G
C
R
C
DHUM
HUM
B
S1
S2
Y/Y2
R
DEHUM
DE
NOTE 18
COM
HUM
RVS COOLING
FAN
24 VAC HOT
24 VAC COMM
DEHUMIDIFY
HUMIDIFY
N/A
OUTDOOR
SENSOR
CONNECTION
Y/Y2
HUMIDIFIER
(24 VAC)
OUTDOOR
SENSOR
See notes 3, 7, 9, 10, 11, 14, 15, 17, and 18
Y2
W3
Y1
W2
O
HEAT STAGE 3
(FURNACE)
HEAT/COOL
STAGE 1
(COMPRESSOR LO)
HEAT/COOL
STAGE 2
(COMPRESSOR HI)
→
Fig. 28—Variable Speed 2-Stage Condensing
Furnace — With DE Connection —
With 2-Speed Air Conditioner
A98283
O/W2
Y1/W2
W/W1
G
R
W2
THERMIDISTAT
VARIABLE-SPEED
CONDENSING
FURNACE
2-SPEED
AIR CONDITIONER
W/W1
G
C
Y2
R
Y1
C
DHUM
HUM
B
S1
S2
Y/Y2
R
DEHUM
DE
NOTE 18
COM
HUM
HEAT STAGE 2
HEAT STAGE 1
COOL STAGE 1
COOL STAGE 2
FAN
24 VAC HOT
24 VAC COMM
DEHUMIDIFY
HUMIDIFY
N/A
OUTDOOR
SENSOR
CONNECTION
Y/Y2
HUMIDIFIER
(24 VAC)
OUTDOOR
SENSOR
See notes 6, 10, 11, 13, 16, and 18
—17—