Bradford White EF Series Service Manual page 13

Be Careful When Making Voltage Measurements or Jumping Terminals
Not to Damage or Deform Connectors or Connector Pins.
Draw Water From The T&P Valve. Compare Temperature With
Example: If temperature of sensor is 84°F, then the resistance through the sensor would be 8449 (see shaded area).
NOTE: Sensor resistance increases as the temperature falls.
°F 0 1
40 26109 25400
50 19906 19383
60 15314 14925
70 11884 11592
80 9299 9078
90 7333 7165
100 5827 5697
110 4663 4562
120 3758 3679
130 3048 2986
140 2488 2439
150 2043 2004
160 1688 1656
170 1402 1376
180 1170 1150
190 982 965
200 828 814
Proper Readings Should Be Greater Then 4800 Ohms at
Be Careful When Making Voltage Measurements or Jumping Terminals
Not to Damage or Deform Connectors or Connector Pins.
SERVICE PROCEDURE EF-I
Thermostat Circuit Testing and Replacement
APPENDIX - A
Sensor Resistance at Various Temperatures
Temperature Ohms Chart Below.
In Degrees F
2 3 4
24712 24045 23399
18876 18383 17905
14548 14180 13823
11308 11032 10763
8862 8653 8449
7000 6839 6683
5570 5446 5326
4464 4368 4274
3602 3527 3453
2925 2866 2808
2391 2344 2298
1966 1928 1891
1625 1595 1566
1351 1327 1303
1129 1110 1090
949 933 917
801 788 775
APPENDIX - B
Temperature Dial Resistance
Minimum Setting
And Less Then 50 Ohms at Maximum.
5 6 7
22771 22163 21573
17440 16990 16553
13477 13140 12812
10502 10248 1000
8250 8057 7869
6531 6383 6238
5208 5094 4982
4183 4094 4006
3382 3312 3244
2752 2697 2643
2253 2209 2166
1856 1820 1786
1537 1509 1481
1280 1257 1235
1071 1953 1035
901 886 871
762 749 737
8 9
21000 20445
16128 15715
12494 12185
9760 9526
7685 7507
6098 5961
4873 4767
3922 3839
3177 3112
2590 2538
2124 2083
1753 1720
1454 1427
1213 1191
1017 999
857 842
725 713
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