Table of Contents
Advertisement
DUAL FUEL ONE OR TWO STAGE OR TWO STEP HEAT PUMP
TWO STAGE VS GAS FURNACE
BK ENABLED
Note B - Cut/remove the factory installed "BK" jumper at the indoor unit.
Note C - For Dual Fuel, cut the JP1 jumper on the Comfort Control.
NOTE: See Fig. OIL-1 for
external relay connections
for oil furnaces.
TWO STAGE
VARIABLE SPEED
GAS FURNACE
COMFORT CONTROL
COOL/HEAT
Y2
-2nd STAGE
W3
24VAC HOT
R
HEATING -
W2
4th STAGE
W1
HEATING -
3rd STAGE
Y/
COOL/HEAT -
Y1
1st STAGE
G
FAN
SOV
O
B
24VAC
common
BK
VS MODE -fan
O D Temp
OT1
O D
Sensor
O D Temp
OT2
Figure DF-1
DUAL FUEL TWO STEP HEAT PUMP
TWO STAGE VS GAS FURNACE
USE ONLY WITH 16 SEER CONDENSER
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.
Note C - Cut the JP1 jumper on the Comfort Control, for Dual Fuel.
NOTE: See Fig. OIL-1 for external relay connections for oil furnaces.
TWO STAGE
VARIABLE SPEED
COMFORT CONTROL
GAS FURNACE
COOL/HEAT -
Y2
2nd STAGE
W3
24VAC HOT
R
HEATING -
W2
4th STAGE
HEATING -
W1
3rd STAGE
COOL/HEAT -
Y/
Y1
1st STAGE
G
FAN
SOV
O
B
24VAC
common
BK
O D Temp
OT1
O D
Sensor
O D Temp
OT2
Figure DF-3
Pub. No. 18-HD29D3-4
ONE OR TWO STAGE
OR TWO STEP
HEAT PUMP
Y/
Y2
Y2
R
R
W2
F
W1
X2
Y1/
Y1
Y
LO
G
O
O
B
B
C
BK
T
TWO STEP
HEAT PUMP
BK
Y2
R
R
W2
W1
X2
Y/
Y1
Y2
G
O
O
B
B
C
Y1/
T
Y
LO
Installer's Guide
DUAL FUEL TWO STAGE HEAT PUMP
TWO STAGE VS GAS FURNACE
BK DISABLED
Note C - For Dual Fuel, cut the JP1 jumper on the Comfort Control.
NOTE: See Fig. OIL-1 for external relay connections for oil furnaces.
TWO STAGE
VARIABLE SPEED
COMFORT CONTROL
GAS FURNACE
COOL/HEAT -
Y2
2nd STAGE
W3
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 DF-2
DUAL FUEL SINGLE STAGE HEAT PUMP
TWO STAGE VS GAS FURNACE
BK DISABLED
Note C - For Dual Fuel, cut the JP1 jumper on the Comfort Control.
NOTE: See Fig. OIL-1 for external relay connections for oil furnaces.
TWO STAGE VARIABLE
COMFORT CONTROL
SPEED GAS FURNACE
Y1/
Y2
Y
LO
W3
24VAC HOT
R
R
HEATING -
3rd STAGE
W2
W2
HEATING -
W1
2nd STAGE
W1
COOL/HEAT -
Y/
Y/
Y1
1st STAGE
Y2
G
G
FAN
SOV
O
O
B
B
24VAC
common
BK
BK
O D Temp
OT1
O D
Sensor
O D Temp
OT2
Figure DF-4
TWO STAGE
HEAT PUMP
Y/
Y2
Y2
R
R
F
W2
W1
X2
Y1/
Y1
Y
LO
G
O
O
B
B
C
T
BK
SINGLE STAGE
HEAT PUMP
R
X2
Y
O
B
C
T
5
Hide quick links:
Advertisement
Table of Contents
