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ONE OR TWO STAGE OR TWO STEP HEAT PUMP
VARIABLE SPEED AIR HANDLER
BK ENABLED
Note B - Cut/remove the factory installed "BK" jumper at the indoor unit.
VARIABLE SPEED
AIR HANDLER &
ELECTRIC HEAT
COMFORT CONTROL
Y/
COOL/HEAT -
Y2
Y2
2nd STAGE
HEATING -
W3
W3
5th STAGE
24VAC HOT
R
R
HEATING -
W2
W2
4th STAGE
HEATING -
W1
W1
3rd STAGE
COOL/HEAT -
Y/
Y1/
1st STAGE
Y1
Y
G
G
FAN
SOV
O
O
B
B
24VAC
common
BK
BK
VS MODE -fan
OT1
O D Temp
O D
Sensor
O D Temp
OT2
Figure HP-1
TWO HEAT PUMPS
SPLIT COIL VARIABLE SPEED AIR HANDLER
BK DISABLED
VS AIR HANDLER
& ELECTRIC HEAT
COMFORT CONTROL
COOL/HEAT -
Y2
2nd STAGE
HEATING -
W3
5th STAGE
24VAC HOT
R
HEATING -
W2
4th STAGE
HEATING -
W1
3rd STAGE
COOL/HEAT -
Y/
1st STAGE
Y1
G
FAN
SOV
O
B
24VAC
common
BK
O D Temp
OT1
O D
Sensor
O D Temp
OT2
Figure HP-3
Pub. No. 18-HD29D3-4
ONE OR TWO STAGE
OR TWO STEP
HEAT PUMP
Y2
R
F
Y1
LO
X2
O
B
T
TWO SEPARATE
HEAT PUMPS
T
T
Y/
Y
Y2
SECOND
STAGE
W3
X2
R
O
W2
B
W1
R
Y1/
Y
Y
LO
X2
G
O
O
B
B
FIRST
BK
R
STAGE
T
9
6
A
3
4
7
B
Installer's Guide
TWO HEAT PUMPS
SPLIT COIL VARIABLE SPEED AIR HANDLER
BK ENABLED
Note B - Cut/remove the factory installed "BK" jumper at the indoor unit.
VS AIR HANDLER
& ELECTRIC HEAT
COMFORT CONTROL
COOL/HEAT -
Y2
2nd STAGE
HEATING -
W3
5th STAGE
24VAC HOT
R
HEATING -
W2
4th STAGE
HEATING -
W1
3rd STAGE
Y/
COOL/HEAT -
Y1
1st STAGE
G
FAN
SOV
O
B
24VAC
common
BK
VS MODE -fan
O D
OT1
Temp
O D
9
Sensor
A
O D
OT2
7
Temp
B
Figure HP-2
TWO SEPARATE
HEAT PUMPS
T
Y/
Y
Y2
SECOND
STAGE
W3
X2
R
O
W2
B
W1
R
Y1/
Y
Y
LO
X2
G
O
O
B
B
R
BK
T
6
FIRST
3
4
STAGE
7
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