lp-505 Rev. 000 Rel. 015 Date 1.7.20
59
DHW Inlet Temperature Sensor
(7850P-015)
Exhaust Temperature Sensor
(7850P-070)
DHW Outlet Temperature Sensor
(7850P-019)
HX (OP) Temperature Sensor
(7850P-081)
Temperature (
o
F) Resistance (Ω) Temperature (
o
F) Resistance (Ω)
-4 62162 -4 28409
5 48440 5 22152
14 38045 14 17408
23 30107 23 13782
32 23998 32 10990
41 19261 41 8824
50 15562 50 7131
59 12655 59 5800
68 10353 68 4747
77 8520 77 3906
86 7051 86 3233
95 5867 95 2690
104 4908 104 2250
113 4125 113 1891
122 3485 122 1598
131 2957 131 1356
140 2520 140 1155
149 2157 149 989
158 1854 158 850
167 1600 167 733
176 1386 176 635
185 1205 185 552
194 1051 194 482
203 920 203 421
212 808 212 370
Table 37 - Temperature Sensor Resistance
Figure 56 - Flame Sight Glass
Part 11 - Installation Checklist
Before Installing Yes No
Is there enough space to ensure proper installation?
Does installation location allow for proper service clearances?
Are water and gas lines properly sized and set at proper pressures for the installation?
Is water heater location as near the exhaust vent / intake pipe terminations as possible?
Have combustible materials been cleared from the installation location?
Is there a drain close to the water heater?
Water Piping Yes No
Does water heater loop piping meet the minimum sizing requirements listed?
NOTE: Smaller piping will cause performance problems.
Has water chemistry been checked?
Does water chemistry meet requirements?
If water chemistry does not meet requirements, have treatment measures been put in place?
Has the system been cleaned and ushed?
Install Exhaust Vent and Intake Piping Yes No
Has the water heater been vented with the approved materials listed in this manual or to meet local codes?
Is air supply sucient for proper water heater operation?
Is total vent piping length within the maximum vent length restriction listed in this manual?
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