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COOLING WITH VARIABLE SPEED INDOOR
RELAY
THERMOSTAT
PANEL
Y2
COOLING-2nd
HEATING -3rd
W3
24VAC HOT
R
HEATING -2nd W2
W1
HEATING -1st
Y1
COOLING -1st
FAN
O
24VAC
common
B
VS MODE -fan
BK
DATA
D
REMOTE
RS
INDOOR
RS
SENSOR
ODT
OUTDOOR
SENSOR
ODT
Note: Enable "BK" (turn on dehumidifier switch or cut "BK" jumper).
Note: *R is only connected on two-compressor models
COOLING WITH 2/4TEE3C
Communicating Air Handler in 24 Volt Mode
RELAY
THERMOSTAT
PANEL
COOL/HEAT -
2nd STAGE
HEATING -
5th STAGE
24VAC HOT
R
HEATING -
4th STAGE
HEATING -
3rd STAGE
COOL/HEAT -
1st STAGE
FAN
SOV
24VAC
common
B
VS MODE -fan
DATA
D
REMOTE
INDOOR
SENSOR
OUTDOOR
SENSOR
Note: First stage blower air flow is set on air handler interface control board.
Note: Remove the "R" to "BK" jumper at the low voltage control.
Note: *R is only connected on two-compressor models
10
HEAT/COOL
TWO STAGE VS
GAS FURNACE or
ONE OR TWO STAGE
VS AIR HANDLER
AIR CONDITIONER
& ELECTRIC HEAT
Y/
Y2
Y2
W3
R
R
R*
W2
W1
Y1/
Y/
Y
Y1
LO
G
G
O
B
B
B
C
BK
D
I D
SENSOR
O D
SENSOR
ONE OR TWO STAGE
AIR HANDLER
AIR CONDITIONER
Y2
Y2
Y2
W3
W3
R
R
R*
W2
W2
W1
W1
Y1
Y1
Y
G
G
O
O
B
B
B
BK
BK
D
RS
I D
SENSOR
RS
ODT
O D
SENSOR
ODT
COOLING WITH NON-VARIABLE SPEED INDOOR
RELAY
THERMOSTAT
PANEL
Y2
HEATING -3rd
W3
24VAC HOT
R
R
HEATING -2nd W2
HEATING -1st
W1
Y1
COOLING -1st
G
FAN
O
24VAC
common
B
B
BK
DATA
D
D
REMOTE
RS
INDOOR
RS
SENSOR
ODT
OUTDOOR
SENSOR
ODT
COOLING WITH *AM7 AIR HANDLERS
RELAY
THERMOSTAT
PANEL
Y2
COOLING-2nd
W3
HEATING -3rd
24VAC HOT
R
R
HEATING -2nd W2
W1
HEATING -1st
Y1
COOLING -1st
FAN
G
O
24VAC
common
B
B
VS MODE -fan
BK
DATA
D
D
REMOTE
RS
INDOOR
RS
SENSOR
ODT
OUTDOOR
SENSOR
ODT
Note: Remove the factory installed "BK" jumper at the indoor unit.
Note: *R is only connected on two-compressor models
ONE OR TWO STAGE
GAS FURNACE or
AIR HANDLER &
ELECTRIC HEAT
W3
R
SINGLE STAGE
W2
AIR CONDITIONER
W/
W1
Y
Y
G
B
B
C
I D
SENSOR
O D
SENSOR
ONE OR TWO STAGE
AIR HANDLER
AIR CONDITIONER
Y2
Y2
W3
R
R*
W2
W1
Y1
Yo
Y
G
O
B
B
BK
I D
SENSOR
O D
SENSOR
18-HD68D1-3
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