Trane RTHC - Page 24

Temperature Sensors
18 RTHC-SVD01B-EN
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Table 3-1: Entering and Leaving Evaporator Water Temperature Sensors
Actual
Te m p.
(F)
Actual
Resistance
(Ohms)
Thermistor
Voltage
(Volts DC)
Actual
Te m p.
(F)
Actual
Resistance
(Ohms)
Thermistor
Voltage
(Volts DC)
Actual
Tem p.
(F)
Actual
Resistance
(Ohms)
Thermistor
Voltage
(Volts DC)
15 54635 3.42 57 16584 1.99 99 5958 0.9657
16 52987 3.39 58 16151 1.96 100 5825 0.95
17 51393 3.35 59 15736 1.93 101 5694 0.93
18 49852 3.32 60 15333 1.90 102 5567 0.91
19 48361 3.29 61 14942 1.87 103 5444 0.90
20 46920 3.25 62 14562 1.84 104 5324 0.88
21 45525 3.22 63 14193 1.81 105 5206 0.86
22 44176 3.18 64 13835 1.78 106 5092 0.85
23 42871 3.15 65 13487 1.75 107 4980 0.83
24 41608 3.11 66 13149 1.72 108 4871 0.82
25 40386 3.08 67 12820 1.69 109 4765 0.80
26 39203 3.04 68 12501 1.67 110 4662 0.79
27 38058 3.01 69 12190 1.64 111 4561 0.77
28 36951 2.97 70 11889 1.61 112 4462 0.76
29 35877 2.94 71 11596 1.58 113 4366 0.74
30 34839 2.90 72 11311 1.56 114 4273 0.73
31 33834 2.87 73 11034 1.53 115 4182 0.72
32 32862 2.83 74 10765 1.50 116 4092 0.70
33 31936 2.80 75 10503 1.48 117 4005 0.69
34 31039 2.76 76 10248 1.45 118 3921 0.68
35 30171 2.73 77 10001 1.43 119 3838 0.67
36 29330 2.69 78 9760 1.40 120 3757 0.65
37 28515 2.66 79 9526 1.38 121 3678 0.64
38 27726 2.62 80 9298 1.36 122 3602 0.63
39 26962 2.59 81 9076 1.33 123 3527 0.62
40 26221 2.55 82 8860 1.31 124 3454 0.61
41 25503 2.52 83 8650 1.29 125 3383 0.60
42 24808 2.49 84 8446 1.26 126 3313 0.59
43 24134 2.45 85 8248 1.24 127 3245 0.58
44 23480 2.42 86 8054 1.22 128 3179 0.57
45 22846 2.38 87 7866 1.20 129 3114 0.56
46 22232 2.35 88 7683 1.18 130 3051 0.55
47 21636 2.32 89 7505 1.16 131 2989 0.54
48 21059 2.28 90 7331 1.13 132 2929 0.53
49 20499 2.25 91 7162 1.11 133 2870 0.52
50 19955 2.22 92 6997 1.09 134 2813 0.51
51 19428 2.18 93 6836 1.07 135 2756 0.50
52 18917 2.15 94 6680 1.06 136 2701 0.49
53 18420 2.12 95 6528 1.04 137 2648 0.48
54 17939 2.09 96 6380 1.02 138 2595 0.47
55 17472 2.05 97 6236 1.00 139 2544 0.46
56 17018 2.02 98 6095 0.98 140 2494 0.46
Notes:
1. Overall accuracy for the sensor is at least +1 over the range shown.
2. As you compare a thermistor resistance (or input voltage) reading with the “actual” temperature indicated by the
thermometer, be sure to consider the location and precision of the thermometer when you decide whether or not the
thermistor is out of specified accuracy.
3. The thermistor resistances given do not account for the self-heating effects that are present when connected to the UCM.
A connected”operating” thermistor will read a slightly lower (less than 1%) resistance.