JOHNSON CONTROLS
138
SECTION 8 - MICROPANEL
Form 201.28-NM1.1
Issue date: 08/06/2021
Sensor displays
Table 21 on page 138 lists all the sensors attached
to the control board associated with system data keys.
The minimum and maximum values displayed on the
micro display are provided.
Table 21 - Sensor min/max outputs
System sensor
Sensor/input Type Minimum value Maximum value
Suction Pressure Transducer 0.0 psig (0 barg) 125.0 psig (8.62 barg)
Condenser Liquid Pressure Transducer 0.0 psig (0 barg) 400.0 psig (27.6 barg)
Discharge Pressure Transducer 0.0 psig (0 barg) 400.0 psig (27.6 barg)
Oil Pressure Transducer 0.0 psig (0 barg) 400.0 psig (27.6 barg)
Flash Tank Level Switch Low High
Condenser Liquid Temp Thermistor -4.1°F (-20.06°C) 155.6°F (68.67°C)
Leaving Chilled Liquid Temp Thermistor -19.1°F (-28.49°C) 110.2°F (43.44°C)
Return Chilled Liquid Temp Thermistor -19.1°F (-28.49°C) 110.2°F (43.44°C)
Eductor Temp Thermistor -4.1°F (-20.06°C) 132.8°F (56.00°C)
Ambient Air Temp Thermistor -14.6°F (-25.89°C) 137.9°F (58.83°C)
Compressor Motor Temp Thermistor -30.2°F (-34.56°C) 302.0°F (150.00°C)
Discharge Temp Thermistor 40.3°F (4.61°C) 302.6°F (150.33°C)
Remote Temp Reset
4 mA to 20 mA, 0 VDC to 10 VDC,
0 mA to 20 mA or 2 VDC to 10 VDC
0% 100%
Remote Current Limit
4 mA to 20 mA, 0 VDC to 10 VDC,
0 mA to 20 mA or 2 VDC to 10 VDC
0% 100%
Remote Sound Limit
4 mA to 20 mA, 0 VDC to 10 VDC,
0 mA to 20 mA or 2 VDC to 10 VDC
0% 100%
If values exceed the limits in the table, a < (less than)
or > (more than) sign will be display along with the
minimum or maximum value.
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