Lochinvar 100 Series Installation & Service Manual

30
10 Troubleshooting
Table 10B - Resistance vs. Temperature
Temperature
(°F)
Resistance
(Ohms)
-328 18.52
-310 22.83
-292 27.10
-274 31.34
-256 35.54
-238 39.72
-220 43.88
-202 48.00
-184 52.11
-166 56.19
-148 60.26
-130 64.30
-112 68.33
-94 72.33
-76 76.33
-58 80.31
-40 84.27
-22 88.22
-4 92.16
14 96.09
32 100.00
Checking temperature sensors
The temperature sensors (inlet and outlet water) are resistance type devices. The following tables show the correct values for the
sensors at various temperatures. Use an ohmmeter to read the resistance of the sensor at a known temperature. If the resistance
of the sensor does not closely match its corresponding table, replace the sensor.
Indirect Plate Water Heater Installation & Service Manual
Temperature
(°F)
Resistance
(Ohms)
50 103.90
68 107.79
86 111.67
104 115.54
122 119.40
140 123.24
158 127.08
176 130.90
194 134.71
212 138.51
230 142.29
248 146.07
266 149.83
284 153.58
302 157.33
320 161.05
338 164.77
356 168.48
374 172.17
392 175.86

Lochinvar 100 Series Specifications

General

Brand	Lochinvar
Model	100 Series
Category	Water Heater
Language	English