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DUAL FUEL SINGLE STAGE HEAT PUMP
NON-VARIABLE SPEED ONE OR TWO STAGE 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.
COMFORT CONTROL
NON-V.S. ONE
Y2
OR TWO STAGE
GAS FURNACE
W3
24VAC HOT
R
HEATING -
W2
W2
3rd STAGE
W/
HEATING -
W1
2nd STAGE
W1
COOL/HEAT -
Y/
1st STAGE
Y1
G
FAN
SOV
O
B
B
24VAC
common
BK
O D Temp
OT1
O D
Sensor
O D Temp
OT2
Figure DF-5
6
SINGLE STAGE
HEAT PUMP
R
R
X2
Y
Y
G
O
B
C
T
JP 1 Location
Installer's Guide
Pub. No. 18-HD29D3-4
JP1
Cut for
Dual Fuel
Applications
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