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AP18733 REV. 3.2.17
75
Figure 54 – Flame Sight Glass
DHW Inlet Temperature Sensor (7850P-015) Exhaust Temperature
Sensor (7850P-070)
Temperature (°F/ °C) Resistance (Ω)
Resistance (Ω)
-4 / -20 28409
5 / -15 22152
14 / -10 17408
23 / -5 13782
32 / 0 10990
41 / 5 8824
50 / 10 7131
59 / 15 5800
68 / 20 4747
77 / 25 3906
86 / 30 3233
95 / 35 2690
104 / 40 2250
113 / 45 1891
122 / 50 1598
131 / 55 1356
140 / 60 1155
149 / 65 989
158 / 70 850
167 / 75 733
176 / 80 635
185 / 85 552
194 / 90 482
203 / 95 421
212 / 100 370
DHW Inlet Temperature Sensor (7850P-015) Exhaust Temperature
Sensor (7850P-070)
Temperature (°F/ °C) Resistance (Ω)
Resistance (Ω)
-4 / -20 62162
5 / -15 48440
14 / -10 38045
23 / -5 30107
32 / 0 23998
41 / 5 19261
50 / 10 15562
59 / 15 12655
68 / 20 10353
77 / 25 8520
86 / 30 7051
95 / 35 5867
104 / 40 4908
113 / 45 4125
122 / 50 3485
131 / 55 2957
140 / 60 2520
149 / 65 2157
158 / 70 1854
167 / 75 1600
176 / 80 1386
185 / 85 1205
194 / 90 1051
203 / 95 920
212 / 100 808
Visual check Port
Port should show
blue flame.
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