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TWO STAGE HEAT PUMP
VARIABLE SPEED AIR HANDLER
BK DISABLED
VARIABLE SPEED
AIR HANDLER &
COMFORT CONTROL
ELECTRIC HEAT
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
O D Temp
OT1
O D
Sensor
O D Temp
OT2
Figure HP-4
SINGLE STAGE HEAT PUMP
VARIABLE SPEED AIR HANDLER
BK DISABLED
VARIABLE SPEED
AIR HANDLER &
ELECTRIC HEAT
COMFORT CONTROL
Y2
HEATING -
W3
4th STAGE
24VAC HOT
R
HEATING -
W2
3rd STAGE
HEATING -
W1
2nd 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-6
8
TWO STAGE
HEAT PUMP
Y/
Y2
Y2
W3
R
R
W2
F
W1
Y1/
Y1
Y
LO
X2
G
O
O
B
B
T
BK
SINGLE STAGE
HEAT PUMP
Y1/
Y
LO
W3
R
R
W2
W1
Y/
Y
Y2
X2
G
O
O
B
B
C
T
BK
Installer's Guide
TWO STEP HEAT PUMP
VARIABLE SPEED AIR HANDLER
BK DISABLED
Note A - The installer must jumper "R" to "O" at the LVTB.
Note B - Cut/remove the factory installed "BK" jumper at the indoor unit.
VARIABLE SPEED
AIR HANDLER &
COMFORT CONTROL
ELECTRIC HEAT
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
FAN
G
SOV
O
B
24VAC
common
BK
OT1
O D Temp
O D
Sensor
O D Temp
OT2
Figure HP-5
SINGLE STAGE HEAT PUMP
NON-VARIABLE SPEED AIR HANDLER
BK DISABLED
COMFORT CONTROL
AIR HANDLER &
ELECTRIC HEAT
Y2
HEATING -
W3
4th STAGE
24VAC HOT
R
HEATING -
W2
3rd STAGE
HEATING -
W1
2nd STAGE
Y/
COOL/HEAT
Y1
1st STAGE
G
FAN
SOV
O
B
24VAC
common
BK
O D Temp
OT1
O D
Sensor
O D Temp
OT2
Figure HP-7
TWO STEP
HEAT PUMP
BK
Y2
W3
R
R
W2
W1
Y/
Y1
Y2
G
X2
O
O
B
B
C
Y1/
T
Y
LO
SINGLE STAGE
HEAT PUMP
W3
R
R
W2
X2
W1
Y
Y
G
O
B
B
T
Pub. No. 18-HD29D3-4
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