Specifications

JOHNSON CONTROLS
162
FORM 150.72-NM1 (908)
Service and Troubleshooting
Liquid & Refrigerant Sensor Test Points
(Table 25)
Entering Chilled Liquid Sensor
J6-5 = +5VDC regulated supply to sensor.
J6-8 = VDC input signal to the I/O board. See
Table 25 for voltage readings that correspond
to specic liquid temperatures.
J6-2 = drain (shield connection = 0VDC) Return
Leaving Chilled Liquid Temperature Sensor
J6-4 = +5VDC regulated supply to sensor.
J6-7 = VDC input signal to the microboard. See
Table 25 for voltage readings that correspond
to specic liquid temperatures.
J6-1 = drain (shield connection = 0VDC) Return
TABLE 25 – ENTERING/LEAVING CHILLED LIQUID
TEMP. SENSOR, TEMPERATURE/
VOLTAGE CORRELATION
TEMP °F
VOLTAGE
(Signal Input
to Return)
TEMP °C
10 1.33 -12
12 1.39 -11
14 1.46 -10
16 1.51 -9
18 1.58 -8
20 1.65 -7
22 1.71 -6
24 1.78 -4
26 1.85 -3
28 1.91 -2
30 1.98 -1
32 2.05 0
34 2.12 1
36 2.19 2
38 2.26 3
40 2.33 4
42 2.40 6
44 2.47 7
46 2.53 8
48 2.60 9
50 2.65 10
52 2.73 11
54 2.80 12
56 2.86 13
58 2.92 14
60 2.98 16
62 3.05 17
64 3.11 18
66 3.17 19
68 3.23 20
70 3.29 21
72 3.34 22
74 3.39 23
76 3.45 24
78 3.5 26
80 3.54 27