Manual 2100-670I
Page
37 of 47
Terminal
Function
Type
Form
Rx+/Tx+
Communication
Rx-/Tx-
Communication
DI1
Smoke Detector
Digital
N/C
DI2
Dirty Filter Switch
Digital
N/C
DI3
Compressor Alarm Relay
Digital
N/C
DI4
Not Used
DI5
Not Used
DI6
Damper Blade Switch
Digital
N/C
DI7
Airflow
Digital
N/C
GND
Digital Ground
B1
Liquid Line Temperature Sensor
Analog Output
10K Ohm Curve J
B2
Outdoor Air Temperature Sensor
Analog Output
10K Ohm Type III (AN)
B3
Return Air Temperature Sensor
Analog Output
10K Ohm Curve J
B4
Supply Air Temperature Sensor
Analog Output
10K NTC Thermistor
B5
Outdoor Humidity Sensor
Analog Output
B6
Dust Sensor Board
Analog Output
0-5VDC
B7
Suction Temperature Sensor
Analog Output
10K Ohm Curve J
GND
Analog Ground
+VDC
24VDC to Outdoor Humidity Sensor
B8
Liquid Pressure Transducer
Analog Output
.5VDC to 4.5VDC
B9
Suction Pressure Transducer
Analog Output
.5VDC to 4.5VDC
Y1
Blower Motor Signal
Y2
Not Used
Y3
Condenser Motor Signal
GND
Ground
C1
24VAC+
Power
NO1
to CCM "Y"
Relay Output
NO2
Compressor Staging Solenoid
Relay Output
NO3
Not Used
C2
24VAC+
Power
NO4
Stage 1 Heating
Relay Output
NO5
Not Used
NO6
Not Used
NO7
Not Used
C7
Not Used
NC7
Not Used
C8
24VAC+
Power
NO8
Dirty Filter Light
Relay Output
GO
24VAC Common
G
24VAC Hot
TABLE 9
FUSION-TEC HR Series Wall-Mount Unit Control Board Terminals