18
3.6.1.4 Refrigerant sensor connection
3.6.2.1 Wiring diagram
WARNING
After installing the sensor, add a zip tie to strain
relief the incoming refrigerant sensor wire.
Connect the cable of refrigerant sensor to CN26 on the board in MCB kit.
Fig. 3-10 REFRIGERANT SENSOR LOCATION Fig. 3-11 REFRIGERANT SENSOR CONNECTION
WARNING
The refrigerant sensor must be
in the original position and
cannot be changed.
R454B REFRIGERANT SENSOR
3.6.2 Field wiring diagrams
BLACK
CN35
WHITE
BLUE
GRAY
GREEN
RED
YELLOW
PURPLE
BROWN
LED1
KIT BOARD
R454B
Sensor
CN14
CN33
DH
B
B
W2
W1
W2W1
W
Y1
Y1
Y
R
R
C
C
C
G
G
Y2
Y2
Y2
5 4 3 2 1 C
CN26
CN34
To thermostat
To furnace
Outdoor
unit
ALARM
CN36
RED
RED
BLACK
BLACK
Power supply by
class 2 ssource
CN26
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